موجه IOS لتمرير نفق IPSec من شبكة LAN إلى شبكة LAN عبر مثال تكوين PAT

خيارات التنزيل

PDF (388.5 KB)
عرض باستخدام Adobe Reader على مجموعة متنوعة من الأجهزة
ePub (104.6 KB)
العرض في تطبيقات مختلفة على iPhone أو iPad أو نظام تشغيل Android أو قارئ Sony أو نظام التشغيل Windows Phone
Mobi (Kindle) (139.6 KB)
عرض على جهاز Kindle أو تطبيق Kindle على أجهزة متعددة

تم التحديث:١٤ يناير ٢٠٠٨

معرّف المستند:23820

لغة خالية من التحيز

تسعى مجموعة الوثائق لهذا المنتج جاهدة لاستخدام لغة خالية من التحيز. لأغراض مجموعة الوثائق هذه، يتم تعريف "خالية من التحيز" على أنها لغة لا تعني التمييز على أساس العمر، والإعاقة، والجنس، والهوية العرقية، والهوية الإثنية، والتوجه الجنسي، والحالة الاجتماعية والاقتصادية، والتمييز متعدد الجوانب. قد تكون الاستثناءات موجودة في الوثائق بسبب اللغة التي يتم تشفيرها بشكل ثابت في واجهات المستخدم الخاصة ببرنامج المنتج، أو اللغة المستخدمة بناءً على وثائق RFP، أو اللغة التي يستخدمها منتج الجهة الخارجية المُشار إليه. تعرّف على المزيد حول كيفية استخدام Cisco للغة الشاملة.

حول هذه الترجمة

ترجمت Cisco هذا المستند باستخدام مجموعة من التقنيات الآلية والبشرية لتقديم محتوى دعم للمستخدمين في جميع أنحاء العالم بلغتهم الخاصة. يُرجى ملاحظة أن أفضل ترجمة آلية لن تكون دقيقة كما هو الحال مع الترجمة الاحترافية التي يقدمها مترجم محترف. تخلي Cisco Systems مسئوليتها عن دقة هذه الترجمات وتُوصي بالرجوع دائمًا إلى المستند الإنجليزي الأصلي (الرابط متوفر).

المحتويات

المقدمة

المتطلبات الأساسية

المتطلبات

المكونات المستخدمة

الاصطلاحات

التكوين

الرسم التخطيطي للشبكة

التكوينات مع انتقال IPSec NAT

عمليات التهيئة دون شفافية IPSec NAT

التحقق من الصحة

التحقق باستخدام شفافية IPSec NAT

التحقق بدون شفافية IPSec NAT

استكشاف الأخطاء وإصلاحها

أستكشاف الأخطاء وإصلاحها مع شفافية IPSec NAT

أستكشاف الأخطاء وإصلاحها بدون شفافية IPSec NAT

معلومات ذات صلة

المقدمة

يزود هذا وثيقة عينة تشكيل لترجمة عنوان أيسر (ضرب) أن يسمح lan-to-lan IPSec نفق أن يكون خلقت. وهو يطبق على السيناريوهات التي يكون لها عنوان IP عام واحد فقط (يستخدم في موجه Cisco IOS®لإجراء ضرب على كل حركة المرور) ويحتاج إلى تمرير نفق IPSec من خلاله.

بالنسبة لعبارات الشبكة الخاصة الظاهرية (VPN) التي تشغل إصدارات برنامج Cisco IOS الإصدار الأقدم من 12.2(13)T، يلزم توفر ميزة المرور عبر بروتوكول IPSec على الموجه الذي يقوم بتنفيذ ضرب للسماح بتضمين حمولة الأمان (ESP) من خلال.

ملاحظة: تعرف هذه الميزة باسم IPSec من خلال دعم ترجمة عنوان الشبكة (NAT) في إصدار إستشارات البرامج (للعملاء المسجلين فقط).

لبدء النفق من النظير المحلي (PATed)، لا توجد حاجة إلى تكوين. لبدء النفق من النظير البعيد، يلزم وجود هذه الأوامر:

ip nat داخل مصدر ساكن إستاتيكي esp inside_ip قارن
ip nat داخل مصدر ساكن إستاتيكي UDP inside_ip 500 قارن 500

بالنسبة لعبارات VPN التي تشغل إصدار من برنامج Cisco IOS Software لاحقا من الإصدار 12.2(13)T، يتم تضمين حركة مرور IPSec في حزم بروتوكول بيانات المستخدم (UDP) المنفذ 4500. تعرف هذه الميزة بشفافية IPSec nat . لبدء النفق من النظير المحلي (PATed)، لا توجد حاجة إلى تكوين.

لبدء النفق من النظير البعيد، يلزم وجود هذه الأوامر:

ip nat داخل مصدر ساكن إستاتيكي UDP داخل_ip 4500 قارن 4500
ip nat داخل مصدر ساكن إستاتيكي UDP داخل_ip 500 قارن 500

قم بإصدار الأمر no crypto ipSec nat-transparent udp-encaps لتعطيل شفافية IPSec nat.

المتطلبات الأساسية

المتطلبات

لا توجد متطلبات خاصة لهذا المستند.

المكونات المستخدمة

تستند المعلومات الواردة في هذا المستند إلى برنامج Cisco IOS الإصدار 12.3(7)T1.

تم إنشاء المعلومات الواردة في هذا المستند من الأجهزة الموجودة في بيئة معملية خاصة. بدأت جميع الأجهزة المُستخدمة في هذا المستند بتكوين ممسوح (افتراضي). إذا كانت شبكتك مباشرة، فتأكد من فهمك للتأثير المحتمل لأي أمر.

الاصطلاحات

للحصول على مزيد من المعلومات حول اصطلاحات المستندات، ارجع إلى اصطلاحات تلميحات Cisco التقنية.

التكوين

في هذا القسم، تُقدّم لك معلومات تكوين الميزات الموضحة في هذا المستند.

الرسم التخطيطي للشبكة

يستخدم هذا المستند إعداد الشبكة التالي:

التكوينات مع انتقال IPSec NAT

يستخدم هذا المستند التكوينات التالية:

VPN-Gateway1
موجه ضرب
VPN-gateway2

VPN-Gateway1
VPN-Gateway1#show running-config Building configuration... Current configuration : 1017 bytes ! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname VPN-Gateway1 ! !--- VPN Gateway1 and VPN Gateway2 can be any devices that !--- perform IPSec. For detailed information on configuring IPSec !--- refer to IPSec Technology Support Information. !--- IPSec configuration between VPN Gateway1 and VPN Gateway2 !--- is beyond the scope of this document. boot-start-marker boot-end-marker ! ! clock timezone EST 0 no aaa new-model ip subnet-zero ! ! ip audit po max-events 100 no ftp-server write-enable ! ! ! ! ! !--- IKE policies (phase 1). crypto isakmp policy 10 authentication pre-share crypto isakmp key cisco123 address 209.165.201.2 ! ! crypto ipsec transform-set basic esp-des esp-md5-hmac ! !--- IPSec policies (phase 1). crypto map mymap 10 ipsec-isakmp set peer 209.165.201.2 set transform-set basic match address 101 ! ! ! interface Ethernet0/0 ip address 192.168.1.1 255.255.255.0 ! interface Serial1/0 ip address 209.165.200.2 255.255.255.252 serial restart-delay 0 crypto map mymap ! ip classless ip route 0.0.0.0 0.0.0.0 209.165.200.1 no ip http server no ip http secure-server ! ! ! access-list 101 permit ip 192.168.1.0 0.0.0.255 172.16.2.0 0.0.0.255 access-list 101 remark Crypto ACL ! ! ! control-plane ! ! line con 0 line aux 0 line vty 0 4 ! ! end

VPN-Gateway1

VPN-Gateway1#show running-config 
Building configuration...

Current configuration : 1017 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname VPN-Gateway1
!


!--- VPN Gateway1 and VPN Gateway2 can be any devices that !--- perform IPSec. For detailed information on configuring IPSec !--- refer to IPSec Technology Support Information. !--- IPSec configuration between VPN Gateway1 and VPN Gateway2 !--- is beyond the scope of this document. 


boot-start-marker
boot-end-marker
!
!
clock timezone EST 0
no aaa new-model
ip subnet-zero
!
!
ip audit po max-events 100
no ftp-server write-enable
!
!
!         
! 
!

!--- IKE policies (phase 1).

crypto isakmp policy 10
 authentication pre-share
crypto isakmp key cisco123 address 209.165.201.2
!
!
crypto ipsec transform-set basic esp-des esp-md5-hmac 
!

!--- IPSec policies (phase 1).

crypto map mymap 10 ipsec-isakmp 
 set peer 209.165.201.2
 set transform-set basic 
 match address 101
!
!
!
interface Ethernet0/0
 ip address 192.168.1.1 255.255.255.0
!
interface Serial1/0
 ip address 209.165.200.2 255.255.255.252
 serial restart-delay 0
 crypto map mymap
!
ip classless
ip route 0.0.0.0 0.0.0.0 209.165.200.1
no ip http server
no ip http secure-server
!
!
!
access-list 101 permit ip 192.168.1.0 0.0.0.255 172.16.2.0 0.0.0.255
access-list 101 remark Crypto ACL
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

موجه ضرب
PAT-Router#show running-config Building configuration... Current configuration : 971 bytes ! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname PAT-Router ! boot-start-marker boot-end-marker ! ! clock timezone EST 0 no aaa new-model ip subnet-zero ! ! ip audit po max-events 100 no ftp-server write-enable ! ! ! ! no crypto isakmp enable ! ! ! interface Ethernet0/0 ip address 172.16.1.1 255.255.255.0 !--- This declares the interface as inside for NAT purposes. ip nat inside ! interface Serial1/0 ip address 209.165.201.2 255.255.255.224 !--- This declares the interface as !--- outside for NAT purposes. ip nat outside serial restart-delay 0 ! ip classless ip route 0.0.0.0 0.0.0.0 209.165.201.1 ip route 172.16.0.0 255.255.0.0 172.16.1.2 no ip http server no ip http secure-server ! ip nat inside source list 1 interface Serial1/0 overload !--- This allows PAT to be used for regular Internet traffic. ip nat inside source static udp 172.16.1.2 4500 interface Serial1/0 4500 !--- This permits IPSec traffic destined for the Serial1/0 !--- interface to be sent to the inside IP address 172.16.1.2. ip nat inside source static udp 172.16.1.2 500 interface Serial1/0 500 !--- This allows UDP traffic for the Serial1/0 interface to be !--- statically mapped to the inside IP address 172.16.1.2. !--- This is required for the Internet Security Association !--- and Key Management Protocol (ISAKMP) negotiation to be !--- initiated from VPN-Gateway1 to VPN-Gateway2. ! ! access-list 1 permit 172.16.0.0 0.0.255.255 ! ! ! control-plane ! ! line con 0 line aux 0 line vty 0 4 ! ! end

موجه ضرب

PAT-Router#show running-config 
Building configuration...

Current configuration : 971 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname PAT-Router
!
boot-start-marker
boot-end-marker
!
!
clock timezone EST 0
no aaa new-model
ip subnet-zero
!
!
ip audit po max-events 100
no ftp-server write-enable
!
!
!         
! 
no crypto isakmp enable
!
!
!
interface Ethernet0/0
 ip address 172.16.1.1 255.255.255.0

!--- This declares the interface as inside for NAT purposes.

 ip nat inside
!
interface Serial1/0
 ip address 209.165.201.2 255.255.255.224

!--- This declares the interface as !--- outside for NAT purposes.

 ip nat outside
 serial restart-delay 0
!
ip classless
ip route 0.0.0.0 0.0.0.0 209.165.201.1
ip route 172.16.0.0 255.255.0.0 172.16.1.2
no ip http server
no ip http secure-server
!
ip nat inside source list 1 interface Serial1/0 overload

!--- This allows PAT to be used for regular Internet traffic. 

ip nat inside source static udp 172.16.1.2 4500 interface Serial1/0 4500

!--- This permits IPSec traffic destined for the Serial1/0 !--- interface to be sent to the inside IP address 172.16.1.2.

ip nat inside source static udp 172.16.1.2 500 interface Serial1/0 500

!--- This allows UDP traffic for the Serial1/0 interface to be !--- statically mapped to the inside IP address 172.16.1.2. !--- This is required for the Internet Security Association !--- and Key Management Protocol (ISAKMP) negotiation to be !--- initiated from VPN-Gateway1 to VPN-Gateway2.

!
!
access-list 1 permit 172.16.0.0 0.0.255.255
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

VPN-gateway2
VPN-Gateway2#show running-config Building configuration... Current configuration : 986 bytes ! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname VPN-Gateway2 ! !--- VPN Gateway1 and VPN Gateway2 can be any devices !--- that perform IPSec. For detailed information on !--- IPSec configuration refer to IPSec Technology Support Information. !--- IPSec configuration between VPN Gateway1 and VPN Gateway2 !--- is beyond the scope of this document. boot-start-marker boot-end-marker ! ! clock timezone EST 0 no aaa new-model ip subnet-zero ! ! ip audit po max-events 100 no ftp-server write-enable ! ! ! ! ! !--- IKE policies (phase 1). crypto isakmp policy 10 authentication pre-share crypto isakmp key cisco123 address 209.165.200.2 ! ! crypto ipsec transform-set basic esp-des esp-md5-hmac ! !--- IPSec policies (phase 1). crypto map mymap 10 ipsec-isakmp set peer 209.165.200.2 set transform-set basic match address 101 ! ! ! interface Ethernet0/0 ip address 172.16.1.2 255.255.255.0 crypto map mymap ! interface Ethernet1/0 ip address 172.16.2.1 255.255.255.0 ! ip classless ip route 0.0.0.0 0.0.0.0 172.16.1.1 no ip http server no ip http secure-server ! ! ! access-list 101 permit ip 172.16.2.0 0.0.0.255 192.168.1.0 0.0.0.255 access-list 101 remark Crypto ACL ! ! ! control-plane ! ! line con 0 line aux 0 line vty 0 4 ! ! end

VPN-gateway2

VPN-Gateway2#show running-config
Building configuration...

Current configuration : 986 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname VPN-Gateway2
!


!--- VPN Gateway1 and VPN Gateway2 can be any devices !--- that perform IPSec. For detailed information on !--- IPSec configuration refer to IPSec Technology Support Information. !--- IPSec configuration between VPN Gateway1 and VPN Gateway2 !--- is beyond the scope of this document. 


boot-start-marker
boot-end-marker
!
!
clock timezone EST 0
no aaa new-model
ip subnet-zero
!
!
ip audit po max-events 100
no ftp-server write-enable
!
!
!         
! 
!

!--- IKE policies (phase 1).

crypto isakmp policy 10
 authentication pre-share
crypto isakmp key cisco123 address 209.165.200.2
!
!
crypto ipsec transform-set basic esp-des esp-md5-hmac 
!

!--- IPSec policies (phase 1).

crypto map mymap 10 ipsec-isakmp 
 set peer 209.165.200.2
 set transform-set basic 
 match address 101
!
!
!
interface Ethernet0/0
 ip address 172.16.1.2 255.255.255.0
 crypto map mymap
!
interface Ethernet1/0
 ip address 172.16.2.1 255.255.255.0
!         
ip classless
ip route 0.0.0.0 0.0.0.0 172.16.1.1
no ip http server
no ip http secure-server
!
!
!
access-list 101 permit ip 172.16.2.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 101 remark Crypto ACL
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

VPN-Gateway1
VPN-Gateway1#show running-config Building configuration... Current configuration : 1017 bytes ! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname VPN-Gateway1 ! !--- VPN Gateway1 and VPN Gateway2 can be any devices !--- that perform IPSec. For detailed information on !--- IPSec configuration refer to IPSec Technology Support Information. !--- IPSec configuration between VPN Gateway1 and VPN Gateway2 !--- is beyond the scope of this document. boot-start-marker boot-end-marker ! ! clock timezone EST 0 no aaa new-model ip subnet-zero ! ! ip audit po max-events 100 no ftp-server write-enable ! ! ! ! ! !--- IKE policies (phase 1). crypto isakmp policy 10 authentication pre-share crypto isakmp key cisco123 address 209.165.201.2 ! ! crypto ipsec transform-set basic esp-des esp-md5-hmac ! !--- IPSec policies (phase 1). crypto map mymap 10 ipsec-isakmp set peer 209.165.201.2 set transform-set basic match address 101 ! ! ! interface Ethernet0/0 ip address 192.168.1.1 255.255.255.0 ! interface Serial1/0 ip address 209.165.200.2 255.255.255.252 serial restart-delay 0 crypto map mymap ! ip classless ip route 0.0.0.0 0.0.0.0 209.165.200.1 no ip http server no ip http secure-server ! ! ! access-list 101 permit ip 192.168.1.0 0.0.0.255 172.16.2.0 0.0.0.255 access-list 101 remark Crypto ACL ! ! ! control-plane ! ! line con 0 line aux 0 line vty 0 4 ! ! end

VPN-Gateway1

VPN-Gateway1#show running-config 
Building configuration...

Current configuration : 1017 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname VPN-Gateway1
!


!--- VPN Gateway1 and VPN Gateway2 can be any devices !--- that perform IPSec. For detailed information on !--- IPSec configuration refer to IPSec Technology Support Information. !--- IPSec configuration between VPN Gateway1 and VPN Gateway2 !--- is beyond the scope of this document. 


boot-start-marker
boot-end-marker
!
!
clock timezone EST 0
no aaa new-model
ip subnet-zero
!
!
ip audit po max-events 100
no ftp-server write-enable
!
!
!         
! 
!

!--- IKE policies (phase 1).

crypto isakmp policy 10
 authentication pre-share
crypto isakmp key cisco123 address 209.165.201.2
!
!
crypto ipsec transform-set basic esp-des esp-md5-hmac 
!

!--- IPSec policies (phase 1).

crypto map mymap 10 ipsec-isakmp 
 set peer 209.165.201.2
 set transform-set basic 
 match address 101
!
!
!
interface Ethernet0/0
 ip address 192.168.1.1 255.255.255.0
!
interface Serial1/0
 ip address 209.165.200.2 255.255.255.252
 serial restart-delay 0
 crypto map mymap
!
ip classless
ip route 0.0.0.0 0.0.0.0 209.165.200.1
no ip http server
no ip http secure-server
!
!
!
access-list 101 permit ip 192.168.1.0 0.0.0.255 172.16.2.0 0.0.0.255
access-list 101 remark Crypto ACL
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

موجه ضرب
PAT-Router#show running-config Building configuration... Current configuration : 971 bytes ! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname PAT-Router ! boot-start-marker boot-end-marker ! ! clock timezone EST 0 no aaa new-model ip subnet-zero ! ! ip audit po max-events 100 no ftp-server write-enable ! ! ! ! no crypto isakmp enable ! ! ! interface Ethernet0/0 ip address 172.16.1.1 255.255.255.0 !--- This declares the interface as inside for NAT purposes. ip nat inside ! interface Serial1/0 ip address 209.165.201.2 255.255.255.224 !--- This declares the interface as !--- outside for NAT purposes. ip nat outside serial restart-delay 0 ! ip classless ip route 0.0.0.0 0.0.0.0 209.165.201.1 ip route 172.16.0.0 255.255.0.0 172.16.1.2 no ip http server no ip http secure-server ! ip nat inside source list 1 interface Serial1/0 overload !--- This allows PAT to be used for regular Internet traffic. ip nat inside source static esp 172.16.1.2 interface Serial1/0 !--- This permits the IPSec ESP tunnel mode !--- destined for the Serial1/0 interface to be sent !--- to the inside IP address 172.16.1.2. The "esp" !--- option allows a single ESP tunnel-mode !--- VPN setup to be possible. ip nat inside source static udp 172.16.1.2 500 interface Serial1/0 500 !--- This allows UDP traffic for the Serial1/0 !--- interface to be statically mapped to the inside !--- IP address 172.16.1.2. This is required !--- for the ISAKMP negotiation to be initiated !--- from VPN-Gateway1 to VPN-Gateway2. ! ! access-list 1 permit 172.16.0.0 0.0.255.255 ! ! ! control-plane ! ! line con 0 line aux 0 line vty 0 4 ! ! end

موجه ضرب

PAT-Router#show running-config 
Building configuration...

Current configuration : 971 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname PAT-Router
!
boot-start-marker
boot-end-marker
!
!
clock timezone EST 0
no aaa new-model
ip subnet-zero
!
!
ip audit po max-events 100
no ftp-server write-enable
!
!
!         
! 
no crypto isakmp enable
!
!
!
interface Ethernet0/0
 ip address 172.16.1.1 255.255.255.0

!--- This declares the interface as inside for NAT purposes.

 ip nat inside
!
interface Serial1/0
 ip address 209.165.201.2 255.255.255.224

!--- This declares the interface as !--- outside for NAT purposes.

 ip nat outside
 serial restart-delay 0
!
ip classless
ip route 0.0.0.0 0.0.0.0 209.165.201.1
ip route 172.16.0.0 255.255.0.0 172.16.1.2
no ip http server
no ip http secure-server
!
ip nat inside source list 1 interface Serial1/0 overload

!--- This allows PAT to be used for regular Internet traffic.
 
ip nat inside source static esp 172.16.1.2 interface Serial1/0

!--- This permits the IPSec ESP tunnel mode !--- destined for the Serial1/0 interface to be sent !--- to the inside IP address 172.16.1.2. The "esp" !--- option allows a single ESP tunnel-mode !--- VPN setup to be possible.

ip nat inside source static udp 172.16.1.2 500 interface Serial1/0 500

!--- This allows UDP traffic for the Serial1/0 !--- interface to be statically mapped to the inside !--- IP address 172.16.1.2. This is required !--- for the ISAKMP negotiation to be initiated !--- from VPN-Gateway1 to VPN-Gateway2.

!
!
access-list 1 permit 172.16.0.0 0.0.255.255
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

VPN-gateway2
VPN-Gateway2#show running-config Building configuration... Current configuration : 986 bytes ! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname VPN-Gateway2 ! !--- VPN Gateway1 and VPN Gateway2 can be any devices !--- that perform IPSec. For detailed information on !--- IPSec configuration refer to IPSec Technology Support Information. !--- IPSec configuration between VPN Gateway1 and VPN Gateway2 !--- is beyond the scope of this document. boot-start-marker boot-end-marker ! ! clock timezone EST 0 no aaa new-model ip subnet-zero ! ! ip audit po max-events 100 no ftp-server write-enable ! ! ! ! ! !--- IKE policies (phase 1). crypto isakmp policy 10 authentication pre-share crypto isakmp key cisco123 address 209.165.200.2 ! ! crypto ipsec transform-set basic esp-des esp-md5-hmac no crypto ipsec nat-transparency udp-encaps ! !--- IPSec policies (phase 1). crypto map mymap 10 ipsec-isakmp set peer 209.165.200.2 set transform-set basic match address 101 ! ! ! interface Ethernet0/0 ip address 172.16.1.2 255.255.255.0 crypto map mymap ! interface Ethernet1/0 ip address 172.16.2.1 255.255.255.0 ! ip classless ip route 0.0.0.0 0.0.0.0 172.16.1.1 no ip http server no ip http secure-server ! ! ! access-list 101 permit ip 172.16.2.0 0.0.0.255 192.168.1.0 0.0.0.255 access-list 101 remark Crypto ACL ! ! ! control-plane ! ! line con 0 line aux 0 line vty 0 4 ! ! end

VPN-gateway2

VPN-Gateway2#show running-config
Building configuration...

Current configuration : 986 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname VPN-Gateway2
!


!--- VPN Gateway1 and VPN Gateway2 can be any devices !--- that perform IPSec. For detailed information on !--- IPSec configuration refer to IPSec Technology Support Information. !--- IPSec configuration between VPN Gateway1 and VPN Gateway2 !--- is beyond the scope of this document. 


boot-start-marker
boot-end-marker
!
!
clock timezone EST 0
no aaa new-model
ip subnet-zero
!
!
ip audit po max-events 100
no ftp-server write-enable
!
!
!         
! 
!

!--- IKE policies (phase 1).

crypto isakmp policy 10
 authentication pre-share
crypto isakmp key cisco123 address 209.165.200.2
!
!
crypto ipsec transform-set basic esp-des esp-md5-hmac
no crypto ipsec nat-transparency udp-encaps 
!

!--- IPSec policies (phase 1).

crypto map mymap 10 ipsec-isakmp 
 set peer 209.165.200.2
 set transform-set basic 
 match address 101
!
!
!
interface Ethernet0/0
 ip address 172.16.1.2 255.255.255.0
 crypto map mymap
!
interface Ethernet1/0
 ip address 172.16.2.1 255.255.255.0
!         
ip classless
ip route 0.0.0.0 0.0.0.0 172.16.1.1
no ip http server
no ip http secure-server
!
!
!
access-list 101 permit ip 172.16.2.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 101 remark Crypto ACL
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

التحقق من الصحة

توفر هذه الأقسام معلومات يمكنك إستخدامها للتأكد من أن التكوين يعمل بشكل صحيح.

يتم دعم بعض أوامر العرض بواسطة أداة مترجم الإخراج (العملاء المسجلون فقط)، والتي تتيح لك عرض تحليل إخراج أمر العرض.

التحقق باستخدام شفافية IPSec NAT
التحقق بدون شفافية IPSec NAT

التحقق باستخدام شفافية IPSec NAT

show crypto isakmp sa— يعرض جميع اقترانات أمان تبادل مفتاح الإنترنت (IKE) الحالية في نظير.

VPN-Gateway1#show crypto isakmp sa
dst             src             state          conn-id slot
209.165.200.2   209.165.201.2   QM_IDLE              1    0


VPN-Gateway2#show crypto isakmp sa
dst             src             state          conn-id slot
209.165.200.2   172.16.1.2      QM_IDLE              1    0

show crypto ipSecsa—يعرض رسائل IPSec SAs التي تم إنشاؤها بين الأقران.

VPN-Gateway1#show crypto ipsec sa

 
!--- This command is issued after a ping !--- is attempted from PC2 to PC1.


interface: Serial1/0
    Crypto map tag: mymap, local addr. 209.165.200.2

   protected vrf: 
   local  ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0)
   remote ident (addr/mask/prot/port): (172.16.2.0/255.255.255.0/0/0)
   current_peer: 209.165.201.2:4500
     PERMIT, flags={origin_is_acl,}
    #pkts encaps: 6, #pkts encrypt: 6, #pkts digest: 6
    #pkts decaps: 6, #pkts decrypt: 6, #pkts verify: 6
    #pkts compressed: 0, #pkts decompressed: 0
    #pkts not compressed: 0, #pkts compr. failed: 0
    #pkts not decompressed: 0, #pkts decompress failed: 0
    #send errors 0, #recv errors 0

     local crypto endpt.: 209.165.200.2, remote crypto endpt.: 209.165.201.2
     path mtu 1500, media mtu 1500
     current outbound spi: 9CCA0619

     inbound esp sas:
      spi: 0x4E6B990F(1315674383)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel UDP-Encaps, }
        slot: 0, conn id: 2000, flow_id: 5, crypto map: mymap
        crypto engine type: Software, engine_id: 1
        sa timing: remaining key lifetime (k/sec): (4602622/3489)
        ike_cookies: 8973C578 9C7DEB45 5C9BE6DC 7F737D09
        IV size: 8 bytes
        replay detection support: Y

     inbound ah sas:

     inbound pcp sas:

     outbound esp sas:
      spi: 0x9CCA0619(2630485529)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel UDP-Encaps, }
        slot: 0, conn id: 2001, flow_id: 6, crypto map: mymap
        crypto engine type: Software, engine_id: 1
        sa timing: remaining key lifetime (k/sec): (4602622/3489)
        ike_cookies: 8973C578 9C7DEB45 5C9BE6DC 7F737D09
        IV size: 8 bytes
        replay detection support: Y

     outbound ah sas:

     outbound pcp sas:


VPN-Gateway2#show crypto ipsec sa

 
!--- This command is issued after a ping !--- is attempted from PC2 to PC1.


interface: Ethernet0/0
    Crypto map tag: mymap, local addr. 172.16.1.2

   protected vrf: 
   local  ident (addr/mask/prot/port): (172.16.2.0/255.255.255.0/0/0)
   remote ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0)
   current_peer: 209.165.200.2:4500
     PERMIT, flags={origin_is_acl,}
    #pkts encaps: 23, #pkts encrypt: 23, #pkts digest: 23
    #pkts decaps: 16, #pkts decrypt: 16, #pkts verify: 16
    #pkts compressed: 0, #pkts decompressed: 0
    #pkts not compressed: 0, #pkts compr. failed: 0
    #pkts not decompressed: 0, #pkts decompress failed: 0
    #send errors 7, #recv errors 0

     local crypto endpt.: 172.16.1.2, remote crypto endpt.: 209.165.200.2
     path mtu 1500, media mtu 1500
     current outbound spi: 4E6B990F

     inbound esp sas:
      spi: 0x9CCA0619(2630485529)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel UDP-Encaps, }
        slot: 0, conn id: 2000, flow_id: 1, crypto map: mymap
        crypto engine type: Software, engine_id: 1
        sa timing: remaining key lifetime (k/sec): (4384024/3481)
        ike_cookies: 5C9BE6DC 7F737D09 8973C578 9C7DEB45
        IV size: 8 bytes
        replay detection support: Y

     inbound ah sas:

     inbound pcp sas:

     outbound esp sas:
      spi: 0x4E6B990F(1315674383)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel UDP-Encaps, }
        slot: 0, conn id: 2001, flow_id: 2, crypto map: mymap
        crypto engine type: Software, engine_id: 1
        sa timing: remaining key lifetime (k/sec): (4384024/3481)
        ike_cookies: 5C9BE6DC 7F737D09 8973C578 9C7DEB45
        IV size: 8 bytes
        replay detection support: Y

     outbound ah sas:

     outbound pcp sas:

عرض ip nat ترجمة—يعرض ترجمات NAT النشطة.

PAT-Router#show ip nat translations
Pro Inside global      Inside local       Outside local      Outside global
udp 209.165.201.2:500  172.16.1.2:500     ---                ---
udp 209.165.201.2:4500 172.16.1.2:4500    ---                ---

التحقق بدون شفافية IPSec NAT

show crypto isakmp sa— يعرض جميع شبكات IKE الحالية في نظير.

VPN-Gateway1#show crypto isakmp sa
dst             src             state          conn-id slot
209.165.200.2   209.165.201.2   QM_IDLE              1    0


VPN-Gateway2#show crypto isakmp sa
dst             src             state          conn-id slot
209.165.200.2   172.16.1.2      QM_IDLE              1    0

show crypto ipSecsa—يعرض رسائل IPSec SAs التي تم إنشاؤها بين الأقران.

VPN-Gateway1#show crypto ipsec sa

 
!--- This command is issued after a ping !--- is attempted from PC2 to PC1.


interface: Serial1/0
    Crypto map tag: mymap, local addr. 209.165.200.2

   protected vrf: 
   local  ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0)
   remote ident (addr/mask/prot/port): (172.16.2.0/255.255.255.0/0/0)
   current_peer: 209.165.201.2:500
     PERMIT, flags={origin_is_acl,}
    #pkts encaps: 21, #pkts encrypt: 21, #pkts digest: 21
    #pkts decaps: 15, #pkts decrypt: 15, #pkts verify: 15
    #pkts compressed: 0, #pkts decompressed: 0
    #pkts not compressed: 0, #pkts compr. failed: 0
    #pkts not decompressed: 0, #pkts decompress failed: 0
    #send errors 4, #recv errors 0

     local crypto endpt.: 209.165.200.2, remote crypto endpt.: 209.165.201.2
     path mtu 1500, media mtu 1500
     current outbound spi: E89A0245

     inbound esp sas:
      spi: 0xB5F867BC(3052955580)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        slot: 0, conn id: 2000, flow_id: 7, crypto map: mymap
        crypto engine type: Software, engine_id: 1
        sa timing: remaining key lifetime (k/sec): (4538665/3553)
        ike_cookies: 8973C578 DD91CB42 5C9BE6DC 63813771
        IV size: 8 bytes
        replay detection support: Y

     inbound ah sas:

     inbound pcp sas:

     outbound esp sas:
      spi: 0xE89A0245(3902407237)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        slot: 0, conn id: 2001, flow_id: 8, crypto map: mymap
        crypto engine type: Software, engine_id: 1
        sa timing: remaining key lifetime (k/sec): (4538665/3553)
        ike_cookies: 8973C578 DD91CB42 5C9BE6DC 63813771
        IV size: 8 bytes
        replay detection support: Y

     outbound ah sas:

     outbound pcp sas:


VPN-Gateway2#show crypto ipsec sa

 
!--- This command is issued after a ping !--- is attempted from PC2 to PC1.


interface: Ethernet0/0
    Crypto map tag: mymap, local addr. 172.16.1.2

   protected vrf: 
   local  ident (addr/mask/prot/port): (172.16.2.0/255.255.255.0/0/0)
   remote ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0)
   current_peer: 209.165.200.2:500
     PERMIT, flags={origin_is_acl,}
    #pkts encaps: 5, #pkts encrypt: 5, #pkts digest: 5
    #pkts decaps: 5, #pkts decrypt: 5, #pkts verify: 5
    #pkts compressed: 0, #pkts decompressed: 0
    #pkts not compressed: 0, #pkts compr. failed: 0
    #pkts not decompressed: 0, #pkts decompress failed: 0
    #send errors 1, #recv errors 0

     local crypto endpt.: 172.16.1.2, remote crypto endpt.: 209.165.200.2
     path mtu 1500, media mtu 1500
     current outbound spi: B5F867BC

     inbound esp sas:
      spi: 0xE89A0245(3902407237)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        slot: 0, conn id: 2000, flow_id: 3, crypto map: mymap
        crypto engine type: Software, engine_id: 1
        sa timing: remaining key lifetime (k/sec): (4572084/3561)
        ike_cookies: 5C9BE6DC 63813771 8973C578 DD91CB42
        IV size: 8 bytes
        replay detection support: Y

     inbound ah sas:

     inbound pcp sas:

     outbound esp sas:
      spi: 0xB5F867BC(3052955580)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        slot: 0, conn id: 2001, flow_id: 4, crypto map: mymap
        crypto engine type: Software, engine_id: 1
        sa timing: remaining key lifetime (k/sec): (4572084/3561)
        ike_cookies: 5C9BE6DC 63813771 8973C578 DD91CB42
        IV size: 8 bytes
        replay detection support: Y

     outbound ah sas:

     outbound pcp sas:

عرض ip nat ترجمة—يعرض ترجمات NAT النشطة.

PAT-Router#show ip nat translations
Pro Inside global      Inside local       Outside local      Outside global
udp 209.165.201.2:500  172.16.1.2:500     ---                ---
esp 209.165.201.2:0    172.16.1.2:0       ---                ---

استكشاف الأخطاء وإصلاحها

يوفر هذا القسم معلومات يمكنك استخدامها لاستكشاف أخطاء التكوين وإصلاحها.

إذا قمت بإعداد نفق IPSec من شبكة LAN إلى شبكة LAN يتضمن تقنية PAT (كما هو موضح في هذا المستند) واستمرت في مواجهة المشاكل، فقم بتجميع إخراج تصحيح الأخطاء من كل جهاز والمخرجات من أوامر show للتحليل بواسطة دعم Cisco الفني.

هذه معلومات أستكشاف الأخطاء وإصلاحها المتعلقة بهذا التكوين. للحصول على معلومات إضافية حول أستكشاف أخطاء NAT وإصلاحها، ارجع إلى أستكشاف أخطاء أمان IP وإصلاحها - فهم أوامر تصحيح الأخطاء واستخدامها والتحقق من تشغيل NAT واستكشاف أخطاء NAT الأساسية وإصلاحها.

يتم عرض أوامر تصحيح الأخطاء وعينة الإخراج في هذه الأقسام.

أستكشاف الأخطاء وإصلاحها مع شفافية IPSec NAT
أستكشاف الأخطاء وإصلاحها بدون شفافية IPSec NAT

ملاحظة: قبل إصدار أوامر تصحيح الأخطاء، راجع المعلومات المهمة في أوامر تصحيح الأخطاء.

أستكشاف الأخطاء وإصلاحها مع شفافية IPSec NAT

debug crypto ipSec—يعرض مفاوضات IPSec للمرحلة 2.
debug crypto isakmp—يعرض مفاوضات ISAKMP للمرحلة 1.
debug ip nat detail—يفحص nat الذي يتم تنفيذه بواسطة الموجه.

وهذه عينة من مخرجات الأمر.

VPN-Gateway1#debug crypto ipsec
Crypto IPSEC debugging is on
VPN-Gateway1#debug crypto isakmp
Crypto ISAKMP debugging is on
VPN-Gateway1#show debug
Cryptographic Subsystem:
  Crypto ISAKMP debugging is on
  Crypto IPSEC debugging is on

 
!--- These debugs appeared after a ping !--- was attempted from PC2 to PC1.


*Jun 27 09:31:36.159: ISAKMP (0:0): received packet from 209.165.201.2 
                                    dport 500 sport 500 Global (N) NEW SA
*Jun 27 09:31:36.159: ISAKMP: Created a peer struct for 209.165.201.2, 
                              peer port 500
*Jun 27 09:31:36.159: ISAKMP: Locking peer struct 0x2C50610, IKE refcount 
                              1 for crypto_isakmp_process_block
*Jun 27 09:31:36.159: ISAKMP: local port 500, remote port 500
*Jun 27 09:31:36.559: insert sa successfully sa = 290B720
*Jun 27 09:31:36.559: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, 
                                        IKE_MM_EXCH
*Jun 27 09:31:36.559: ISAKMP:(0:1:SW:1):Old State = IKE_READY  
                                        New State = IKE_R_MM1 

*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): processing SA payload. message ID = 0
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): vendor ID seems Unity/DPD but 
                                         major 157 mismatch
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): vendor ID is NAT-T v3
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): vendor ID seems Unity/DPD but major 
                                         123 mismatch
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): vendor ID is NAT-T v2
*Jun 27 09:31:36.619: ISAKMP: Looking for a matching key for 209.165.201.2 
                              in default : success
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1):found peer pre-shared key matching 
                                        209.165.201.2
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): local preshared key found
*Jun 27 09:31:36.619: ISAKMP : Scanning profiles for xauth ...
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1):Checking ISAKMP transform 1 against 
                                       priority 10 policy
*Jun 27 09:31:36.619: ISAKMP:      encryption DES-CBC
*Jun 27 09:31:36.619: ISAKMP:      hash SHA
*Jun 27 09:31:36.619: ISAKMP:      default group 1
*Jun 27 09:31:36.619: ISAKMP:      auth pre-share
*Jun 27 09:31:36.619: ISAKMP:      life type in seconds
*Jun 27 09:31:36.619: ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1):atts are acceptable. Next payload is 0
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): vendor ID seems Unity/DPD but major 
                                         157 mismatch
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): vendor ID is NAT-T v3
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): vendor ID seems Unity/DPD but 
                                         major 123 mismatch
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1): vendor ID is NAT-T v2
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                                        IKE_PROCESS_MAIN_MODE
*Jun 27 09:31:36.619: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM1  
                                        New State = IKE_R_MM1 

*Jun 27 09:31:36.771: ISAKMP:(0:1:SW:1): constructed NAT-T vendor-03 ID
*Jun 27 09:31:36.771: ISAKMP:(0:1:SW:1): sending packet to 209.165.201.2 
                                         my_port 500 peer_port 500 (R) MM_SA_SETUP
*Jun 27 09:31:36.771: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                                        IKE_PROCESS_COMPLETE
*Jun 27 09:31:36.771: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM1  
                                        New State = IKE_R_MM2 

*Jun 27 09:31:37.179: ISAKMP (0:134217729): received packet from 
                                            209.165.201.2 dport 500 sport 500 
                                            Global (R) MM_SA_SETUP
*Jun 27 09:31:37.179: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Jun 27 09:31:37.179: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM2  New State = IKE_R_MM3 

*Jun 27 09:31:38.199: ISAKMP:(0:1:SW:1): processing KE payload. 
                                         message ID = 0
*Jun 27 09:31:38.199: ISAKMP:(0:1:SW:1): processing NONCE payload. message ID = 0
*Jun 27 09:31:38.759: ISAKMP: Looking for a matching key for 209.165.201.2 
                              in default : success
*Jun 27 09:31:38.759: ISAKMP:(0:1:SW:1):found peer pre-shared key matching 
                                         209.165.201.2
*Jun 27 09:31:38.759: ISAKMP:(0:1:SW:1):SKEYID state generated
*Jun 27 09:31:38.759: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:38.759: ISAKMP:(0:1:SW:1): vendor ID is Unity
*Jun 27 09:31:38.759: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:38.759: ISAKMP:(0:1:SW:1): vendor ID is DPD
*Jun 27 09:31:38.759: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:38.759: ISAKMP:(0:1:SW:1): speaking to another IOS box!
*Jun 27 09:31:38.759: ISAKMP:received payload type 17
*Jun 27 09:31:38.759: ISAKMP:received payload type 17
*Jun 27 09:31:38.759: ISAKMP (0:134217729): NAT found, the node outside NAT
*Jun 27 09:31:38.759: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                                IKE_PROCESS_MAIN_MODE
*Jun 27 09:31:38.759: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM3  
                             New State = IKE_R_MM3 

*Jun 27 09:31:38.891: ISAKMP:(0:1:SW:1): sending packet to 209.165.201.2 
                               my_port 500 peer_port 500 (R) MM_KEY_EXCH
*Jun 27 09:31:38.891: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                               IKE_PROCESS_COMPLETE
*Jun 27 09:31:38.891: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM3  
                              New State = IKE_R_MM4 

*Jun 27 09:31:40.071: ISAKMP (0:134217729): received packet from 
                             209.165.201.2 dport 4500 sport 4500 Global 
                            (R) MM_KEY_EXCH
*Jun 27 09:31:40.071: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, 
                             IKE_MM_EXCH
*Jun 27 09:31:40.071: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM4  
                              New State = IKE_R_MM5 

*Jun 27 09:31:40.199: ISAKMP:(0:1:SW:1): processing ID payload. message ID = 0
*Jun 27 09:31:40.199: ISAKMP (0:134217729): ID payload 
        next-payload : 8
        type         : 1 
        address      : 172.16.1.2 
        protocol     : 17 
        port         : 0 
        length       : 12
*Jun 27 09:31:40.199: ISAKMP:(0:1:SW:1):: peer matches *none* of the profiles
*Jun 27 09:31:40.199: ISAKMP:(0:1:SW:1): processing HASH payload. message ID = 0
*Jun 27 09:31:40.199: ISAKMP:(0:1:SW:1): processing NOTIFY INITIAL_CONTACT 
                             protocol 1
        spi 0, message ID = 0, sa = 290B720
*Jun 27 09:31:40.199: ISAKMP:(0:1:SW:1):SA authentication status:
        authenticated
*Jun 27 09:31:40.199: ISAKMP:(0:1:SW:1): Process initial contact,
                          bring down existing phase 1 and 2 SA's with 
                         local 209.165.200.2 
                         remote 209.165.201.2 remote port 4500
*Jun 27 09:31:40.231: IPSEC(key_engine): got a queue event with 1 kei messages
*Jun 27 09:31:40.399: ISAKMP:(0:1:SW:1):SA authentication status:
        authenticated
*Jun 27 09:31:40.399: ISAKMP:(0:1:SW:1):SA has been authenticated 
                             with 209.165.201.2
*Jun 27 09:31:40.399: ISAKMP:(0:1:SW:1):Detected port floating to 
                             port = 4500
*Jun 27 09:31:40.399: ISAKMP: Trying to insert a peer 
                            209.165.200.2/209.165.201.2/4500/,  
                             and inserted successfully.
*Jun 27 09:31:40.399: ISAKMP:(0:1:SW:1):: peer matches *none* of the profiles
*Jun 27 09:31:40.399: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                       IKE_PROCESS_MAIN_MODE
*Jun 27 09:31:40.399: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM5  
                        New State = IKE_R_MM5 

*Jun 27 09:31:40.459: ISAKMP:(0:1:SW:1):SA is doing pre-shared key 
                       authentication using id type ID_IPV4_ADDR
*Jun 27 09:31:40.459: ISAKMP (0:134217729): ID payload 
        next-payload : 8
        type         : 1 
        address      : 209.165.200.2 
        protocol     : 17 
        port         : 0 
        length       : 12
*Jun 27 09:31:40.459: ISAKMP:(0:1:SW:1):Total payload length: 12
*Jun 27 09:31:40.459: ISAKMP:(0:1:SW:1): sending packet to 209.165.201.2 
                      my_port 4500 peer_port 4500 (R) MM_KEY_EXCH
*Jun 27 09:31:40.459: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                       IKE_PROCESS_COMPLETE
*Jun 27 09:31:40.459: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM5  
                      New State = IKE_P1_COMPLETE 

*Jun 27 09:31:40.539: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PHASE1_COMPLETE
*Jun 27 09:31:40.539: ISAKMP:(0:1:SW:1):Old State = IKE_P1_COMPLETE  
                      New State = IKE_P1_COMPLETE 

*Jun 27 09:31:40.999: ISAKMP (0:134217729): received packet from 209.165.201.2 
                      dport 4500 sport 4500 Global (R) QM_IDLE      
*Jun 27 09:31:40.999: ISAKMP: set new node 1546295295 to QM_IDLE      
*Jun 27 09:31:40.999: ISAKMP:(0:1:SW:1): processing HASH payload. message 
                      ID = 1546295295
*Jun 27 09:31:40.999: ISAKMP:(0:1:SW:1): processing SA payload. 
                       message ID = 1546295295
*Jun 27 09:31:40.999: ISAKMP:(0:1:SW:1):Checking IPSec proposal 1
*Jun 27 09:31:40.999: ISAKMP: transform 1, ESP_DES
*Jun 27 09:31:40.999: ISAKMP:   attributes in transform:
*Jun 27 09:31:40.999: ISAKMP:      encaps is 61443 (Tunnel-UDP)
*Jun 27 09:31:40.999: ISAKMP:      SA life type in seconds
*Jun 27 09:31:40.999: ISAKMP:      SA life duration (basic) of 3600
*Jun 27 09:31:40.999: ISAKMP:      SA life type in kilobytes
*Jun 27 09:31:40.999: ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0 
*Jun 27 09:31:40.999: ISAKMP:      authenticator is HMAC-MD5
*Jun 27 09:31:40.999: ISAKMP:(0:1:SW:1):atts are acceptable.
*Jun 27 09:31:40.999: IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) INBOUND local= 209.165.200.2, remote= 209.165.201.2, 
    local_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel-UDP), 
    lifedur= 0s and 0kb, 
    spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x400
*Jun 27 09:31:40.999: IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
*Jun 27 09:31:40.999: ISAKMP:(0:1:SW:1): processing NONCE payload. 
                      message ID = 1546295295
*Jun 27 09:31:40.999: ISAKMP:(0:1:SW:1): processing ID payload. 
                       message ID = 1546295295
*Jun 27 09:31:40.999: ISAKMP:(0:1:SW:1): processing ID payload. 
                      message ID = 1546295295
*Jun 27 09:31:40.999: ISAKMP:(0:1:SW:1): asking for 1 spis from ipsec
*Jun 27 09:31:40.999: ISAKMP:(0:1:SW:1):Node 1546295295, Input = 
                      IKE_MESG_FROM_PEER, IKE_QM_EXCH
*Jun 27 09:31:40.999: ISAKMP:(0:1:SW:1):Old State = IKE_QM_READY  
                       New State = IKE_QM_SPI_STARVE
*Jun 27 09:31:41.031: IPSEC(key_engine): got a queue event with 1 kei messages
*Jun 27 09:31:41.031: IPSEC(spi_response): getting spi 1315674383 for SA 
        from 209.165.200.2   to 209.165.201.2   for prot 3
*Jun 27 09:31:41.079: ISAKMP: received ike message (2/1)
*Jun 27 09:31:42.039: ISAKMP:(0:1:SW:1): sending packet to 209.165.201.2 
                       my_port 4500 peer_port 4500 (R) QM_IDLE      
*Jun 27 09:31:42.039: ISAKMP:(0:1:SW:1):Node 1546295295, 
                      Input = IKE_MESG_FROM_IPSEC, IKE_SPI_REPLY
*Jun 27 09:31:42.039: ISAKMP:(0:1:SW:1):Old State = IKE_QM_SPI_STARVE  
                       New State = IKE_QM_R_QM2
*Jun 27 09:31:42.311: ISAKMP (0:134217729): received packet from 209.165.201.2 
                       dport 4500 sport 4500 Global (R) QM_IDLE      
*Jun 27 09:31:42.311: IPSec: Flow_switching Allocated flow for flow_id 134217733 
*Jun 27 09:31:42.311: IPSec: Flow_switching Allocated flow for flow_id 134217734 
*Jun 27 09:31:43.339: %CRYPTO-5-SESSION_STATUS: Crypto tunnel is UP  .  
                      Peer 209.165.201.2:4500       Id: 172.16.1.2
*Jun 27 09:31:43.339: ISAKMP: Locking peer struct 0x2C50610, IPSEC refcount 1 
                      for for stuff_ke
*Jun 27 09:31:43.339: ISAKMP:(0:1:SW:1): Creating IPSec SAs
*Jun 27 09:31:43.339:         inbound SA from 209.165.201.2 to 209.165.200.2 
                              (f/i)  0/ 0
        (proxy 172.16.2.0 to 192.168.1.0)
*Jun 27 09:31:43.339:         has spi 0x4E6B990F and conn_id 2000 and flags 400
*Jun 27 09:31:43.339:         lifetime of 3600 seconds
*Jun 27 09:31:43.339:         lifetime of 4608000 kilobytes
*Jun 27 09:31:43.339:         has client flags 0x10
*Jun 27 09:31:43.339:         outbound SA from 209.165.200.2 to 209.165.201.2 
                              (f/i) 0/0
        (proxy 192.168.1.0 to 172.16.2.0)
*Jun 27 09:31:43.339:         has spi -1664481767 and conn_id 2001 and flags 408
*Jun 27 09:31:43.339:         lifetime of 3600 seconds
*Jun 27 09:31:43.339:         lifetime of 4608000 kilobytes
*Jun 27 09:31:43.339:         has client flags 0x10
*Jun 27 09:31:43.339: ISAKMP:(0:1:SW:1):deleting node 1546295295 error 
                      FALSE reason "quick mode done (await)"
*Jun 27 09:31:43.339: ISAKMP:(0:1:SW:1):Node 1546295295, Input = 
                      IKE_MESG_FROM_PEER, IKE_QM_EXCH
*Jun 27 09:31:43.339: ISAKMP:(0:1:SW:1):Old State = IKE_QM_R_QM2  
                       New State = IKE_QM_PHASE2_COMPLETE
*Jun 27 09:31:43.359: IPSEC(key_engine): got a queue event with 2 kei messages
*Jun 27 09:31:43.359: IPSEC(initialize_sas): ,
  (key eng. msg.) INBOUND local= 209.165.200.2, remote= 209.165.201.2, 
    local_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel-UDP), 
    lifedur= 3600s and 4608000kb, 
    spi= 0x4E6B990F(1315674383), conn_id= 134219728, keysize= 0, flags= 0x400
*Jun 27 09:31:43.359: IPSEC(initialize_sas): ,
  (key eng. msg.) OUTBOUND local= 209.165.200.2, remote= 209.165.201.2, 
    local_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel-UDP), 
    lifedur= 3600s and 4608000kb, 
    spi= 0x9CCA0619(2630485529), conn_id= 134219729, keysize= 0, flags= 0x408
*Jun 27 09:31:43.359: IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
*Jun 27 09:31:43.359: IPSEC(crypto_ipsec_sa_find_ident_head): 
                      reconnecting with the same proxies and 209.165.201.2
*Jun 27 09:31:43.359: IPSEC(mtree_add_ident): src 192.168.1.0, dest 172.16.2.0, 
                      dest_port 0

*Jun 27 09:31:43.359: IPSEC(create_sa): sa created,
  (sa) sa_dest= 209.165.200.2, sa_prot= 50, 
    sa_spi= 0x4E6B990F(1315674383), 
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 134219728
*Jun 27 09:31:43.359: IPSEC(create_sa): sa created,
  (sa) sa_dest= 209.165.201.2, sa_prot= 50, 
    sa_spi= 0x9CCA0619(2630485529), 
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 134219729
*Jun 27 09:32:33.359: ISAKMP:(0:1:SW:1):purging node 1546295295 

VPN-Gateway2#debug crypto ipsec
Crypto IPSEC debugging is on
VPN-Gateway2#debug crypto isakmp
Crypto ISAKMP debugging is on
VPN-Gateway2#show debug
Cryptographic Subsystem:
  Crypto ISAKMP debugging is on
  Crypto IPSEC debugging is on
VPN-Gateway2#


 !--- These debugs appeared after a ping !--- was attempted from PC2 to PC1.


*Jun 27 09:31:35.447: IPSEC(sa_request): ,
  (key eng. msg.) OUTBOUND local= 172.16.1.2, remote= 209.165.200.2, 
    local_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel), 
    lifedur= 3600s and 4608000kb, 
    spi= 0x9CCA0619(2630485529), conn_id= 0, keysize= 0, flags= 0x400A
*Jun 27 09:31:35.455: ISAKMP: received ke message (1/1)
*Jun 27 09:31:35.455: ISAKMP:(0:0:N/A:0): SA request profile is (NULL)
*Jun 27 09:31:35.455: ISAKMP: Created a peer struct for 209.165.200.2, 
                      peer port 500
*Jun 27 09:31:35.455: ISAKMP: Locking peer struct 0x2C42438, IKE refcount 
                       1 for isakmp_initiator
*Jun 27 09:31:35.455: ISAKMP: local port 500, remote port 500
*Jun 27 09:31:35.487: ISAKMP: set new node 0 to QM_IDLE      
*Jun 27 09:31:35.487: insert sa successfully sa = 2CB1E80
*Jun 27 09:31:35.487: ISAKMP:(0:1:SW:1):Can not start Aggressive mode, 
                      trying Main mode.
*Jun 27 09:31:35.487: ISAKMP: Looking for a matching key for 209.165.200.2 
                      in default : success
*Jun 27 09:31:35.487: ISAKMP:(0:1:SW:1):found peer pre-shared key matching 
                      209.165.200.2
*Jun 27 09:31:35.487: ISAKMP:(0:1:SW:1): constructed NAT-T vendor-03 ID
*Jun 27 09:31:35.487: ISAKMP:(0:1:SW:1): constructed NAT-T vendor-02 ID
*Jun 27 09:31:35.487: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_IPSEC, 
                      IKE_SA_REQ_MM
*Jun 27 09:31:35.487: ISAKMP:(0:1:SW:1):Old State = IKE_READY  
                       New State = IKE_I_MM1 

*Jun 27 09:31:35.487: ISAKMP:(0:1:SW:1): beginning Main Mode exchange
*Jun 27 09:31:35.487: ISAKMP:(0:1:SW:1): sending packet to 209.165.200.2 
                      my_port 500 peer_port 500 (I) MM_NO_STATE
*Jun 27 09:31:36.607: ISAKMP (0:134217729): received packet from 209.165.200.2 
                      dport 500 sport 500 Global (I) MM_NO_STATE
*Jun 27 09:31:36.607: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, 
                      IKE_MM_EXCH
*Jun 27 09:31:36.607: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM1  
                      New State = IKE_I_MM2 

*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1): processing SA payload. message ID = 0
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1): vendor ID seems Unity/DPD but 
                      major 157 mismatch
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1): vendor ID is NAT-T v3
*Jun 27 09:31:36.687: ISAKMP: Looking for a matching key for 209.165.200.2 
                      in default : success
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1):found peer pre-shared key 
                      matching 209.165.200.2
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1): local preshared key found
*Jun 27 09:31:36.687: ISAKMP : Scanning profiles for xauth ...
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1):Checking ISAKMP transform 1 
                      against priority 10 policy
*Jun 27 09:31:36.687: ISAKMP:      encryption DES-CBC
*Jun 27 09:31:36.687: ISAKMP:      hash SHA
*Jun 27 09:31:36.687: ISAKMP:      default group 1
*Jun 27 09:31:36.687: ISAKMP:      auth pre-share
*Jun 27 09:31:36.687: ISAKMP:      life type in seconds
*Jun 27 09:31:36.687: ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1):atts are acceptable. Next payload is 0
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1): vendor ID seems Unity/DPD but 
                      major 157 mismatch
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1): vendor ID is NAT-T v3
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_MAIN_MODE
*Jun 27 09:31:36.687: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM2  
                      New State = IKE_I_MM2 

*Jun 27 09:31:36.795: ISAKMP:(0:1:SW:1): sending packet to 209.165.200.2 
                      my_port 500 peer_port 500 (I) MM_SA_SETUP
*Jun 27 09:31:36.795: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_COMPLETE
*Jun 27 09:31:36.795: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM2  
                       New State = IKE_I_MM3 

*Jun 27 09:31:38.727: ISAKMP (0:134217729): received packet from 209.165.200.2 
                      dport 500 sport 500 Global (I) MM_SA_SETUP
*Jun 27 09:31:38.727: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, 
                      IKE_MM_EXCH
*Jun 27 09:31:38.727: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM3  
                       New State = IKE_I_MM4 

*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1): processing KE payload. 
                       message ID = 0
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1): processing NONCE payload. message ID = 0
*Jun 27 09:31:38.807: ISAKMP: Looking for a matching key for 209.165.200.2 
                      in default : success
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1):found peer pre-shared key matching 
                      209.165.200.2
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1):SKEYID state generated
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1): vendor ID is Unity
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1): vendor ID is DPD
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1): speaking to another IOS box!
*Jun 27 09:31:38.807: ISAKMP:received payload type 17
*Jun 27 09:31:38.807: ISAKMP (0:134217729): NAT found, the node inside NAT
*Jun 27 09:31:38.807: ISAKMP:received payload type 17
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_MAIN_MODE
*Jun 27 09:31:38.807: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM4  
                      New State = IKE_I_MM4 

*Jun 27 09:31:38.935: ISAKMP:(0:1:SW:1):Send initial contact
*Jun 27 09:31:38.935: ISAKMP:(0:1:SW:1):SA is doing pre-shared key 
                      authentication using id type ID_IPV4_ADDR
*Jun 27 09:31:38.935: ISAKMP (0:134217729): ID payload 
        next-payload : 8
        type         : 1 
        address      : 172.16.1.2 
        protocol     : 17 
        port         : 0 
        length       : 12
*Jun 27 09:31:38.935: ISAKMP:(0:1:SW:1):Total payload length: 12
*Jun 27 09:31:38.935: ISAKMP:(0:1:SW:1): sending packet to 209.165.200.2 
                      my_port 4500 peer_port 4500 (I) MM_KEY_EXCH
*Jun 27 09:31:38.935: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_COMPLETE
*Jun 27 09:31:38.935: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM4  
                       New State = IKE_I_MM5 

*Jun 27 09:31:40.307: ISAKMP (0:134217729): received packet from 
                      209.165.200.2 dport 4500 sport 4500 Global (I) MM_KEY_EXCH
*Jun 27 09:31:40.307: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, 
                       IKE_MM_EXCH
*Jun 27 09:31:40.307: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM5  
                      New State = IKE_I_MM6 

*Jun 27 09:31:40.367: ISAKMP:(0:1:SW:1): processing ID payload. message ID = 0
*Jun 27 09:31:40.367: ISAKMP (0:134217729): ID payload 
        next-payload : 8
        type         : 1 
        address      : 209.165.200.2 
        protocol     : 17 
        port         : 0 
        length       : 12
*Jun 27 09:31:40.367: ISAKMP:(0:1:SW:1): processing HASH payload. message ID = 0
*Jun 27 09:31:40.367: ISAKMP:(0:1:SW:1):SA authentication status:
        authenticated
*Jun 27 09:31:40.367: ISAKMP:(0:1:SW:1):SA has been authenticated with 
                      209.165.200.2
*Jun 27 09:31:40.367: ISAKMP:(0:1:SW:1):: peer matches *none* of the 
                       profiles
*Jun 27 09:31:40.367: ISAKMP:(0:1:SW:1):Setting UDP ENC peer struct 
                      0x2940710 sa= 0x2CB1E80
*Jun 27 09:31:40.367: ISAKMP: Trying to insert a peer 
                      172.16.1.2/209.165.200.2/4500/,  and inserted successfully.
*Jun 27 09:31:40.367: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_MAIN_MODE
*Jun 27 09:31:40.367: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM6  
                       New State = IKE_I_MM6 

*Jun 27 09:31:40.367: ISAKMP: sending nat keepalive packet to 209.165.200.2(4500)
*Jun 27 09:31:40.395: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                       IKE_PROCESS_COMPLETE
*Jun 27 09:31:40.395: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM6  
                      New State = IKE_P1_COMPLETE 

*Jun 27 09:31:40.475: ISAKMP:(0:1:SW:1):beginning Quick Mode exchange, 
                      M-ID of 1546295295
*Jun 27 09:31:40.507: ISAKMP:(0:1:SW:1): sending packet to 209.165.200.2 
                       my_port 4500 peer_port 4500 (I) QM_IDLE      
*Jun 27 09:31:40.507: ISAKMP:(0:1:SW:1):Node 1546295295, Input = IKE_MESG_INTERNAL, 
                      IKE_INIT_QM
*Jun 27 09:31:40.507: ISAKMP:(0:1:SW:1):Old State = IKE_QM_READY  
                      New State = IKE_QM_I_QM1
*Jun 27 09:31:40.507: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PHASE1_COMPLETE
*Jun 27 09:31:40.507: ISAKMP:(0:1:SW:1):Old State = IKE_P1_COMPLETE  
                      New State = IKE_P1_COMPLETE 

*Jun 27 09:31:41.887: ISAKMP (0:134217729): received packet from 
                       209.165.200.2 dport 4500 sport 4500 Global (I) QM_IDLE      
*Jun 27 09:31:41.887: ISAKMP:(0:1:SW:1): processing HASH payload. 
                       message ID = 1546295295
*Jun 27 09:31:41.887: ISAKMP:(0:1:SW:1): processing SA payload. 
                       message ID = 1546295295
*Jun 27 09:31:41.887: ISAKMP:(0:1:SW:1):Checking IPSec proposal 1
*Jun 27 09:31:41.887: ISAKMP: transform 1, ESP_DES
*Jun 27 09:31:41.887: ISAKMP:   attributes in transform:
*Jun 27 09:31:41.887: ISAKMP:      encaps is 61443 (Tunnel-UDP)
*Jun 27 09:31:41.887: ISAKMP:      SA life type in seconds
*Jun 27 09:31:41.887: ISAKMP:      SA life duration (basic) of 3600
*Jun 27 09:31:41.887: ISAKMP:      SA life type in kilobytes
*Jun 27 09:31:41.887: ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0 
*Jun 27 09:31:41.887: ISAKMP:      authenticator is HMAC-MD5
*Jun 27 09:31:41.887: ISAKMP:(0:1:SW:1):atts are acceptable.
*Jun 27 09:31:41.887: IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) INBOUND local= 172.16.1.2, remote= 209.165.200.2, 
    local_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel-UDP), 
    lifedur= 0s and 0kb, 
    spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x400
*Jun 27 09:31:41.887: IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
*Jun 27 09:31:41.887: ISAKMP:(0:1:SW:1): processing NONCE payload. 
                       message ID = 1546295295
*Jun 27 09:31:41.887: ISAKMP:(0:1:SW:1): processing ID payload. 
                       message ID = 1546295295
*Jun 27 09:31:41.887: ISAKMP:(0:1:SW:1): processing ID payload. 
                       message ID = 1546295295
*Jun 27 09:31:41.887: IPSec: Flow_switching Allocated flow for flow_id 134217729 
*Jun 27 09:31:41.887: IPSec: Flow_switching Allocated flow for flow_id 134217730 
*Jun 27 09:31:41.947: %CRYPTO-5-SESSION_STATUS: Crypto tunnel is UP  .  
                      Peer 209.165.200.2:4500       Id: 209.165.200.2
*Jun 27 09:31:41.947: ISAKMP: Locking peer struct 0x2C42438, IPSEC refcount 
                      1 for for stuff_ke
*Jun 27 09:31:41.947: ISAKMP:(0:1:SW:1): Creating IPSec SAs
*Jun 27 09:31:41.947:         inbound SA from 209.165.200.2 to 172.16.1.2 
                               (f/i)  0/ 0
        (proxy 192.168.1.0 to 172.16.2.0)
*Jun 27 09:31:41.947:         has spi 0x9CCA0619 and conn_id 2000 and flags 400
*Jun 27 09:31:41.947:         lifetime of 3600 seconds
*Jun 27 09:31:41.947:         lifetime of 4608000 kilobytes
*Jun 27 09:31:41.947:         has client flags 0x10
*Jun 27 09:31:41.947:         outbound SA from 172.16.1.2 to 209.165.200.2 
                              (f/i) 0/0
        (proxy 172.16.2.0 to 192.168.1.0)
*Jun 27 09:31:41.947:         has spi 1315674383 and conn_id 2001 and flags 408
*Jun 27 09:31:41.947:         lifetime of 3600 seconds
*Jun 27 09:31:41.947:         lifetime of 4608000 kilobytes
*Jun 27 09:31:41.947:         has client flags 0x10
*Jun 27 09:31:41.947: ISAKMP:(0:1:SW:1): sending packet to 209.165.200.2 
                         my_port 4500 peer_port 4500 (I) QM_IDLE      
*Jun 27 09:31:41.947: ISAKMP:(0:1:SW:1):deleting node 1546295295 error 
                      FALSE reason ""
*Jun 27 09:31:41.947: ISAKMP:(0:1:SW:1):Node 1546295295, Input = 
                      IKE_MESG_FROM_PEER, IKE_QM_EXCH
*Jun 27 09:31:41.947: ISAKMP:(0:1:SW:1):Old State = IKE_QM_I_QM1  
                       New State = IKE_QM_PHASE2_COMPLETE
*Jun 27 09:31:41.955: IPSEC(key_engine): got a queue event with 2 kei messages
*Jun 27 09:31:41.955: IPSEC(initialize_sas): ,
  (key eng. msg.) INBOUND local= 172.16.1.2, remote= 209.165.200.2, 
    local_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel-UDP), 
    lifedur= 3600s and 4608000kb, 
    spi= 0x9CCA0619(2630485529), conn_id= 134219728, keysize= 0, flags= 0x400
*Jun 27 09:31:41.955: IPSEC(initialize_sas): ,
  (key eng. msg.) OUTBOUND local= 172.16.1.2, remote= 209.165.200.2, 
    local_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel-UDP), 
    lifedur= 3600s and 4608000kb, 
    spi= 0x4E6B990F(1315674383), conn_id= 134219729, keysize= 0, flags= 0x408
*Jun 27 09:31:41.955: IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
*Jun 27 09:31:41.955: IPSEC(crypto_ipsec_sa_find_ident_head): reconnecting 
                     with the same proxies and 209.165.200.2
*Jun 27 09:31:41.955: IPSEC(mtree_add_ident): src 172.16.2.0, dest 192.168.1.0, 
                       dest_port 0

*Jun 27 09:31:41.955: IPSEC(create_sa): sa created,
  (sa) sa_dest= 172.16.1.2, sa_prot= 50, 
    sa_spi= 0x9CCA0619(2630485529), 
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 134219728
*Jun 27 09:31:41.955: IPSEC(create_sa): sa created,
  (sa) sa_dest= 209.165.200.2, sa_prot= 50, 
    sa_spi= 0x4E6B990F(1315674383), 
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 134219729
VPN-Gateway2#
*Jun 27 09:32:31.979: ISAKMP:(0:1:SW:1):purging node 1546295295


PAT-Router#debug ip nat detail
IP NAT detailed debugging is on
PAT-Router#show debug
Generic IP:
  IP NAT detailed debugging is on
PAT-Router#

!--- The "i" in this line indicates the packet is traveling from the !--- inside to the outside (from a NAT perspective) interface. The number in !--- the brackets is the identification number in the IP packet. This is !--- useful when correlating information with sniffer traces taken with a !--- network analyzer while troubleshooting problems.

*Jun 27 09:31:35.375: NAT*: i: udp (172.16.1.2, 500) -> (209.165.200.2, 500) [66]

!--- The "s" in this next line shows the source address of the packet and how it is !--- being translated. 

*Jun 27 09:31:35.375: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [66]
*Jun 27 09:31:36.475: NAT*: o: udp (209.165.200.2, 500) -> (209.165.201.2, 500) [66]     
*Jun 27 09:31:36.475: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [66]
*Jun 27 09:31:36.683: NAT*: i: udp (172.16.1.2, 500) -> (209.165.200.2, 500) [67]
*Jun 27 09:31:36.683: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [67]
*Jun 27 09:31:38.595: NAT*: o: udp (209.165.200.2, 500) -> (209.165.201.2, 500) [67]
*Jun 27 09:31:38.595: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [67]
*Jun 27 09:31:38.823: NAT*: i: udp (172.16.1.2, 4500) -> (209.165.200.2, 4500) [68]
*Jun 27 09:31:38.823: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [68]
*Jun 27 09:31:40.163: NAT*: o: udp (209.165.200.2, 4500) -> (209.165.201.2, 4500) [68]     
*Jun 27 09:31:40.163: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [68]
*Jun 27 09:31:40.255: NAT*: i: udp (172.16.1.2, 4500) -> (209.165.200.2, 4500) [69]
*Jun 27 09:31:40.255: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [69]
*Jun 27 09:31:40.395: NAT*: i: udp (172.16.1.2, 4500) -> (209.165.200.2, 4500) [70]
*Jun 27 09:31:40.395: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [70]
*Jun 27 09:31:41.747: NAT*: o: udp (209.165.200.2, 4500) -> (209.165.201.2, 4500) [69]
*Jun 27 09:31:41.747: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [69]
*Jun 27 09:31:41.839: NAT*: i: udp (172.16.1.2, 4500) -> (209.165.200.2, 4500) [71]
*Jun 27 09:31:41.839: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [71]
*Jun 27 09:31:43.463: NAT*: i: udp (172.16.1.2, 4500) -> (209.165.200.2, 4500) [72]
*Jun 27 09:31:43.463: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [72]
*Jun 27 09:31:43.523: NAT*: o: udp (209.165.200.2, 4500) -> (209.165.201.2, 4500) [70]
*Jun 27 09:31:43.523: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [70]
*Jun 27 09:33:27.975: NAT*: i: udp (172.16.1.2, 4500) -> (209.165.200.2, 4500) [73]
*Jun 27 09:33:27.975: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [73]
*Jun 27 09:33:28.067: NAT*: o: udp (209.165.200.2, 4500) -> (209.165.201.2, 4500) [71]
*Jun 27 09:33:28.067: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [71]
*Jun 27 09:33:28.115: NAT*: i: udp (172.16.1.2, 4500) -> (209.165.200.2, 4500) [74]
*Jun 27 09:33:28.115: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [74]
*Jun 27 09:33:28.167: NAT*: o: udp (209.165.200.2, 4500) -> (209.165.201.2, 4500) [72]
*Jun 27 09:33:28.167: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [72]
*Jun 27 09:33:28.227: NAT*: i: udp (172.16.1.2, 4500) -> (209.165.200.2, 4500) [75]
*Jun 27 09:33:28.227: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [75]
*Jun 27 09:33:28.283: NAT*: o: udp (209.165.200.2, 4500) -> (209.165.201.2, 4500) [73]
*Jun 27 09:33:28.283: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [73]
*Jun 27 09:33:28.355: NAT*: i: udp (172.16.1.2, 4500) -> (209.165.200.2, 4500) [76]
*Jun 27 09:33:28.355: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [76]
*Jun 27 09:33:28.407: NAT*: o: udp (209.165.200.2, 4500) -> (209.165.201.2, 4500) [74]
*Jun 27 09:33:28.407: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [74]
*Jun 27 09:33:28.455: NAT*: i: udp (172.16.1.2, 4500) -> (209.165.200.2, 4500) [77]
*Jun 27 09:33:28.455: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [77]
*Jun 27 09:33:28.487: NAT*: o: udp (209.165.200.2, 4500) -> (209.165.201.2, 4500) [75]
*Jun 27 09:33:28.487: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [75]

أستكشاف الأخطاء وإصلاحها بدون شفافية IPSec NAT

debug crypto ipSec—يعرض مفاوضات IPSec للمرحلة 2.
debug crypto isakmp—يعرض مفاوضات ISAKMP للمرحلة 1.
debug ip nat detail—يفحص nat الذي يتم تنفيذه بواسطة الموجه.

وهذه عينة من مخرجات الأمر.

VPN-Gateway1#debug crypto ipsec
Crypto IPSEC debugging is on
VPN-Gateway1#debug crypto isakmp
Crypto ISAKMP debugging is on
VPN-Gateway1#show debug
Cryptographic Subsystem:
  Crypto ISAKMP debugging is on
  Crypto IPSEC debugging is on

 
!--- These debugs appeared after a ping !--- was attempted from PC2 to PC1.


*Jun 27 09:49:58.351: ISAKMP (0:0): received packet from 209.165.201.2 
                      dport 500 sport 500 Global (N) NEW SA
*Jun 27 09:49:58.351: ISAKMP: Created a peer struct for 209.165.201.2, 
                      peer port 500
*Jun 27 09:49:58.351: ISAKMP: Locking peer struct 0x2C50328, IKE refcount 1 
                      for crypto_isakmp_process_block
*Jun 27 09:49:58.351: ISAKMP: local port 500, remote port 500
*Jun 27 09:49:58.991: insert sa successfully sa = 29D2E80
*Jun 27 09:49:58.991: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Jun 27 09:49:58.991: ISAKMP:(0:1:SW:1):Old State = IKE_READY  New State = 
                      IKE_R_MM1 

*Jun 27 09:49:59.151: ISAKMP:(0:1:SW:1): processing SA payload. message ID = 0
*Jun 27 09:49:59.151: ISAKMP: Looking for a matching key for 209.165.201.2 
                      in default : success
*Jun 27 09:49:59.151: ISAKMP:(0:1:SW:1):found peer pre-shared key matching 
                      209.165.201.2
*Jun 27 09:49:59.151: ISAKMP:(0:1:SW:1): local preshared key found
*Jun 27 09:49:59.151: ISAKMP : Scanning profiles for xauth ...
*Jun 27 09:49:59.151: ISAKMP:(0:1:SW:1):Checking ISAKMP transform 1 against 
                      priority 10 policy
*Jun 27 09:49:59.151: ISAKMP:      encryption DES-CBC
*Jun 27 09:49:59.151: ISAKMP:      hash SHA
*Jun 27 09:49:59.151: ISAKMP:      default group 1
*Jun 27 09:49:59.151: ISAKMP:      auth pre-share
*Jun 27 09:49:59.151: ISAKMP:      life type in seconds
*Jun 27 09:49:59.151: ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
*Jun 27 09:49:59.151: ISAKMP:(0:1:SW:1):atts are acceptable. Next payload is 0
*Jun 27 09:49:59.151: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_MAIN_MODE
*Jun 27 09:49:59.151: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM1  
                      New State = IKE_R_MM1 

*Jun 27 09:49:59.223: ISAKMP:(0:1:SW:1): sending packet to 209.165.201.2 
                       my_port 500 peer_port 500 (R) MM_SA_SETUP
*Jun 27 09:49:59.223: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                       IKE_PROCESS_COMPLETE
*Jun 27 09:49:59.223: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM1  New State = 
                      IKE_R_MM2 

*Jun 27 09:49:59.711: ISAKMP (0:134217729): received packet from 209.165.201.2 
                      dport 500 sport 500 Global (R) MM_SA_SETUP
*Jun 27 09:49:59.711: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, 
                      IKE_MM_EXCH
*Jun 27 09:49:59.711: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM2  
                      New State = IKE_R_MM3 

*Jun 27 09:49:59.763: ISAKMP:(0:1:SW:1): processing KE payload. message ID = 0
*Jun 27 09:49:59.763: ISAKMP:(0:1:SW:1): processing NONCE payload. 
                      message ID = 0
*Jun 27 09:49:59.911: ISAKMP: Looking for a matching key for 209.165.201.2 
                      in default : success
*Jun 27 09:49:59.911: ISAKMP:(0:1:SW:1):found peer pre-shared key matching 
                      209.165.201.2
*Jun 27 09:49:59.911: ISAKMP:(0:1:SW:1):SKEYID state generated
*Jun 27 09:49:59.911: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:49:59.911: ISAKMP:(0:1:SW:1): vendor ID is Unity
*Jun 27 09:49:59.911: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:49:59.911: ISAKMP:(0:1:SW:1): vendor ID is DPD
*Jun 27 09:49:59.911: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:49:59.911: ISAKMP:(0:1:SW:1): speaking to another IOS box!
*Jun 27 09:49:59.911: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_MAIN_MODE
*Jun 27 09:49:59.911: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM3  
                      New State = IKE_R_MM3 

*Jun 27 09:50:00.051: ISAKMP:(0:1:SW:1): sending packet to 209.165.201.2 
                      my_port 500 peer_port 500 (R) MM_KEY_EXCH
*Jun 27 09:50:00.051: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_COMPLETE
*Jun 27 09:50:00.051: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM3  New State = 
                       IKE_R_MM4 

*Jun 27 09:50:00.743: ISAKMP (0:134217729): received packet from 209.165.201.2 
                       dport 500 sport 500 Global (R) MM_KEY_EXCH
*Jun 27 09:50:00.743: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, 
                      IKE_MM_EXCH
*Jun 27 09:50:00.743: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM4  
                      New State = IKE_R_MM5 

*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1): processing ID payload. message ID = 0
*Jun 27 09:50:00.811: ISAKMP (0:134217729): ID payload 
        next-payload : 8
        type         : 1 
        address      : 172.16.1.2 
        protocol     : 17 
        port         : 500 
        length       : 12
*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1):: peer matches *none* of the profiles
*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1): processing HASH payload. message ID = 0
*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1): processing NOTIFY INITIAL_CONTACT 
                       protocol 1
        spi 0, message ID = 0, sa = 29D2E80
*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1):SA authentication status:
        authenticated
*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1): Process initial contact,
                    bring down existing phase 1 and 2 SA's with local 
                     209.165.200.2 remote 
                     209.165.201.2 remote port 500
*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1):SA authentication status:
        authenticated
*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1):SA has been authenticated with 
                      209.165.201.2
*Jun 27 09:50:00.811: ISAKMP: Trying to insert a peer 
                      209.165.200.2/209.165.201.2/500/,  and inserted successfully.
*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1):: peer matches *none* of the profiles
*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_MAIN_MODE
*Jun 27 09:50:00.811: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM5  
                      New State = IKE_R_MM5 

*Jun 27 09:50:00.851: IPSEC(key_engine): got a queue event with 1 kei messages
*Jun 27 09:50:00.963: ISAKMP:(0:1:SW:1):SA is doing pre-shared key 
                        authentication using id type ID_IPV4_ADDR
*Jun 27 09:50:00.963: ISAKMP (0:134217729): ID payload 
        next-payload : 8
        type         : 1 
        address      : 209.165.200.2 
        protocol     : 17 
        port         : 500 
        length       : 12
*Jun 27 09:50:00.963: ISAKMP:(0:1:SW:1):Total payload length: 12
*Jun 27 09:50:00.963: ISAKMP:(0:1:SW:1): sending packet to 209.165.201.2 
                      my_port 500 peer_port 500 (R) MM_KEY_EXCH
*Jun 27 09:50:00.963: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_COMPLETE
*Jun 27 09:50:00.963: ISAKMP:(0:1:SW:1):Old State = IKE_R_MM5  New State = 
                      IKE_P1_COMPLETE 

*Jun 27 09:50:01.043: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                       IKE_PHASE1_COMPLETE
*Jun 27 09:50:01.043: ISAKMP:(0:1:SW:1):Old State = IKE_P1_COMPLETE  
                       New State = IKE_P1_COMPLETE 

*Jun 27 09:50:01.403: ISAKMP (0:134217729): received packet from 209.165.201.2 
                      dport 500 sport 500 Global (R) QM_IDLE      
*Jun 27 09:50:01.403: ISAKMP: set new node 1689610294 to QM_IDLE      
*Jun 27 09:50:01.403: ISAKMP:(0:1:SW:1): processing HASH payload. message 
                       ID = 1689610294
*Jun 27 09:50:01.403: ISAKMP:(0:1:SW:1): processing SA payload. message 
                      ID = 1689610294
*Jun 27 09:50:01.403: ISAKMP:(0:1:SW:1):Checking IPSec proposal 1
*Jun 27 09:50:01.403: ISAKMP: transform 1, ESP_DES
*Jun 27 09:50:01.403: ISAKMP:   attributes in transform:
*Jun 27 09:50:01.403: ISAKMP:      encaps is 1 (Tunnel)
*Jun 27 09:50:01.403: ISAKMP:      SA life type in seconds
*Jun 27 09:50:01.403: ISAKMP:      SA life duration (basic) of 3600
*Jun 27 09:50:01.403: ISAKMP:      SA life type in kilobytes
*Jun 27 09:50:01.403: ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0 
*Jun 27 09:50:01.403: ISAKMP:      authenticator is HMAC-MD5
*Jun 27 09:50:01.403: ISAKMP:(0:1:SW:1):atts are acceptable.
*Jun 27 09:50:01.403: IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) INBOUND local= 209.165.200.2, remote= 209.165.201.2, 
    local_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel), 
    lifedur= 0s and 0kb, 
    spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x2
*Jun 27 09:50:01.403: IPSEC(kei_proxy): head = mymap, map->ivrf = ,
                      kei->ivrf = 
*Jun 27 09:50:01.403: ISAKMP:(0:1:SW:1): processing NONCE payload. 
                      message ID = 1689610294
*Jun 27 09:50:01.403: ISAKMP:(0:1:SW:1): processing ID payload. 
                      message ID = 1689610294
*Jun 27 09:50:01.403: ISAKMP:(0:1:SW:1): processing ID payload. 
                      message ID = 1689610294
*Jun 27 09:50:01.403: ISAKMP:(0:1:SW:1): asking for 1 spis from ipsec
*Jun 27 09:50:01.403: ISAKMP:(0:1:SW:1):Node 1689610294, Input = 
                      IKE_MESG_FROM_PEER, IKE_QM_EXCH
*Jun 27 09:50:01.403: ISAKMP:(0:1:SW:1):Old State = IKE_QM_READY  
                       New State = IKE_QM_SPI_STARVE
*Jun 27 09:50:01.443: IPSEC(key_engine): got a queue event with 1 kei messages
*Jun 27 09:50:01.443: IPSEC(spi_response): getting spi 3052955580 for SA 
        from 209.165.200.2   to 209.165.201.2   for prot 3
*Jun 27 09:50:01.463: ISAKMP: received ke message (2/1)
*Jun 27 09:50:01.971: ISAKMP:(0:1:SW:1): sending packet to 209.165.201.2 
                      my_port 500 peer_port 500 (R) QM_IDLE      
*Jun 27 09:50:01.971: ISAKMP:(0:1:SW:1):Node 1689610294, Input = 
                      IKE_MESG_FROM_IPSEC, IKE_SPI_REPLY
*Jun 27 09:50:01.971: ISAKMP:(0:1:SW:1):Old State = IKE_QM_SPI_STARVE  
                      New State = IKE_QM_R_QM2
*Jun 27 09:50:02.303: ISAKMP (0:134217729): received packet from 209.165.201.2 
                       dport 500 sport 500 Global (R) QM_IDLE      
*Jun 27 09:50:02.303: IPSec: Flow_switching Allocated flow for flow_id 
                      134217735 
*Jun 27 09:50:02.303: IPSec: Flow_switching Allocated flow for flow_id 134217736 
*Jun 27 09:50:03.203: %CRYPTO-5-SESSION_STATUS: Crypto tunnel is UP  .  
                      Peer 209.165.201.2:500       Id: 172.16.1.2
*Jun 27 09:50:03.203: ISAKMP: Locking peer struct 0x2C50328, IPSEC refcount 
                       1 for for stuff_ke
*Jun 27 09:50:03.203: ISAKMP:(0:1:SW:1): Creating IPSec SAs
*Jun 27 09:50:03.203:         inbound SA from 209.165.201.2 to 209.165.200.2 
                              (f/i)  0/ 0
                              (proxy 172.16.2.0 to 192.168.1.0)
*Jun 27 09:50:03.203:         has spi 0xB5F867BC and conn_id 2000 and flags 2
*Jun 27 09:50:03.203:         lifetime of 3600 seconds
*Jun 27 09:50:03.203:         lifetime of 4608000 kilobytes
*Jun 27 09:50:03.203:         has client flags 0x0
*Jun 27 09:50:03.203:         outbound SA from 209.165.200.2 to 209.165.201.2 
                               (f/i) 0/0
                              (proxy 192.168.1.0 to 172.16.2.0)
*Jun 27 09:50:03.203:         has spi -392560059 and conn_id 2001 and flags A
*Jun 27 09:50:03.203:         lifetime of 3600 seconds
*Jun 27 09:50:03.203:         lifetime of 4608000 kilobytes
*Jun 27 09:50:03.203:         has client flags 0x0
*Jun 27 09:50:03.203: ISAKMP:(0:1:SW:1):deleting node 1689610294 error 
                      FALSE reason "quick mode done (await)"
*Jun 27 09:50:03.203: ISAKMP:(0:1:SW:1):Node 1689610294, Input = 
                     IKE_MESG_FROM_PEER, IKE_QM_EXCH
*Jun 27 09:50:03.203: ISAKMP:(0:1:SW:1):Old State = IKE_QM_R_QM2  
                       New State = IKE_QM_PHASE2_COMPLETE
*Jun 27 09:50:03.231: IPSEC(key_engine): got a queue event with 2 kei messages
*Jun 27 09:50:03.231: IPSEC(initialize_sas): ,
  (key eng. msg.) INBOUND local= 209.165.200.2, remote= 209.165.201.2, 
    local_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel), 
    lifedur= 3600s and 4608000kb, 
    spi= 0xB5F867BC(3052955580), conn_id= 134219728, keysize= 0, flags= 0x2
*Jun 27 09:50:03.231: IPSEC(initialize_sas): ,
  (key eng. msg.) OUTBOUND local= 209.165.200.2, remote= 209.165.201.2, 
    local_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel), 
    lifedur= 3600s and 4608000kb, 
    spi= 0xE89A0245(3902407237), conn_id= 134219729, keysize= 0, flags= 0xA
*Jun 27 09:50:03.231: IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
*Jun 27 09:50:03.231: IPSEC(crypto_ipsec_sa_find_ident_head): 
                      reconnecting with the same proxies and 209.165.201.2
*Jun 27 09:50:03.231: IPSEC(mtree_add_ident): src 192.168.1.0, 
                      dest 172.16.2.0, dest_port 0

*Jun 27 09:50:03.231: IPSEC(create_sa): sa created,
  (sa) sa_dest= 209.165.200.2, sa_prot= 50, 
    sa_spi= 0xB5F867BC(3052955580), 
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 134219728
*Jun 27 09:50:03.231: IPSEC(create_sa): sa created,
  (sa) sa_dest= 209.165.201.2, sa_prot= 50, 
    sa_spi= 0xE89A0245(3902407237), 
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 134219729

*Jun 27 09:50:53.231: ISAKMP:(0:1:SW:1):purging node 1689610294

VPN-Gateway2#debug crypto ipsec
Crypto IPSEC debugging is on
VPN-Gateway2#debug crypto isakmp
Crypto ISAKMP debugging is on
VPN-Gateway2#show debug
Cryptographic Subsystem:
  Crypto ISAKMP debugging is on
  Crypto IPSEC debugging is on
VPN-Gateway2#

 
!--- These debugs appeared after a ping !--- was attempted from PC2 to PC1.


*Jun 27 09:49:57.799: IPSEC(sa_request): ,
  (key eng. msg.) OUTBOUND local= 172.16.1.2, remote= 209.165.200.2, 
    local_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel), 
    lifedur= 3600s and 4608000kb, 
    spi= 0xE89A0245(3902407237), conn_id= 0, keysize= 0, flags= 0x400A
*Jun 27 09:49:57.807: ISAKMP: received ke message (1/1)
*Jun 27 09:49:57.807: ISAKMP:(0:0:N/A:0): SA request profile is (NULL)
*Jun 27 09:49:57.807: ISAKMP: Created a peer struct for 209.165.200.2, 
                      peer port 500
*Jun 27 09:49:57.807: ISAKMP: Locking peer struct 0x2BEDC78, IKE refcount 
                      1 for isakmp_initiator
*Jun 27 09:49:57.807: ISAKMP: local port 500, remote port 500
*Jun 27 09:49:57.839: ISAKMP: set new node 0 to QM_IDLE      
*Jun 27 09:49:57.839: insert sa successfully sa = 2CB1E80
*Jun 27 09:49:57.839: ISAKMP:(0:1:SW:1):Can not start Aggressive mode, 
                       trying Main mode.
*Jun 27 09:49:57.839: ISAKMP: Looking for a matching key for 209.165.200.2 
                      in default : success
*Jun 27 09:49:57.839: ISAKMP:(0:1:SW:1):found peer pre-shared key matching 
                       209.165.200.2
*Jun 27 09:49:57.839: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_IPSEC, 
                       IKE_SA_REQ_MM
*Jun 27 09:49:57.839: ISAKMP:(0:1:SW:1):Old State = IKE_READY  
                      New State = IKE_I_MM1 

*Jun 27 09:49:57.839: ISAKMP:(0:1:SW:1): beginning Main Mode exchange
*Jun 27 09:49:57.839: ISAKMP:(0:1:SW:1): sending packet to 209.165.200.2 
                      my_port 500 peer_port 500 (I) MM_NO_STATE
*Jun 27 09:49:59.099: ISAKMP (0:134217729): received packet from 209.165.200.2 
                      dport 500 sport 500 Global (I) MM_NO_STATE
*Jun 27 09:49:59.099: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Jun 27 09:49:59.099: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM1  New State = 
                      IKE_I_MM2 

*Jun 27 09:49:59.139: ISAKMP:(0:1:SW:1): processing SA payload. message ID = 0
*Jun 27 09:49:59.139: ISAKMP: Looking for a matching key for 209.165.200.2 
                       in default : success
*Jun 27 09:49:59.139: ISAKMP:(0:1:SW:1):found peer pre-shared key matching 
                       209.165.200.2
*Jun 27 09:49:59.139: ISAKMP:(0:1:SW:1): local preshared key found
*Jun 27 09:49:59.139: ISAKMP : Scanning profiles for xauth ...
*Jun 27 09:49:59.139: ISAKMP:(0:1:SW:1):Checking ISAKMP transform 1 against 
                       priority 10 policy
*Jun 27 09:49:59.139: ISAKMP:      encryption DES-CBC
*Jun 27 09:49:59.139: ISAKMP:      hash SHA
*Jun 27 09:49:59.139: ISAKMP:      default group 1
*Jun 27 09:49:59.139: ISAKMP:      auth pre-share
*Jun 27 09:49:59.139: ISAKMP:      life type in seconds
*Jun 27 09:49:59.139: ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
*Jun 27 09:49:59.139: ISAKMP:(0:1:SW:1):atts are acceptable. Next payload is 0
*Jun 27 09:49:59.139: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_MAIN_MODE
*Jun 27 09:49:59.139: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM2  New State = 
                      IKE_I_MM2 

*Jun 27 09:49:59.259: ISAKMP:(0:1:SW:1): sending packet to 209.165.200.2 
                      my_port 500 peer_port 500 (I) MM_SA_SETUP
*Jun 27 09:49:59.259: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_COMPLETE
*Jun 27 09:49:59.259: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM2  New State = 
                       IKE_I_MM3 

*Jun 27 09:49:59.919: ISAKMP (0:134217729): received packet from 209.165.200.2 
                       dport 500 sport 500 Global (I) MM_SA_SETUP
*Jun 27 09:49:59.919: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Jun 27 09:49:59.919: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM3  
                       New State = IKE_I_MM4 

*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1): processing KE payload. message ID = 0
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1): processing NONCE payload. message ID = 0
*Jun 27 09:49:59.947: ISAKMP: Looking for a matching key for 209.165.200.2 
                      in default : success
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1):found peer pre-shared key matching 
                      209.165.200.2
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1):SKEYID state generated
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1): vendor ID is Unity
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1): vendor ID is DPD
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1): processing vendor id payload
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1): speaking to another IOS box!
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_MAIN_MODE
*Jun 27 09:49:59.947: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM4  
                       New State = IKE_I_MM4 

*Jun 27 09:50:00.059: ISAKMP:(0:1:SW:1):Send initial contact
*Jun 27 09:50:00.059: ISAKMP:(0:1:SW:1):SA is doing pre-shared key 
                        authentication using id type ID_IPV4_ADDR
*Jun 27 09:50:00.059: ISAKMP (0:134217729): ID payload 
        next-payload : 8
        type         : 1 
        address      : 172.16.1.2 
        protocol     : 17 
        port         : 500 
        length       : 12
*Jun 27 09:50:00.059: ISAKMP:(0:1:SW:1):Total payload length: 12
*Jun 27 09:50:00.059: ISAKMP:(0:1:SW:1): sending packet to 209.165.200.2 
                       my_port 500 peer_port 500 (I) MM_KEY_EXCH
*Jun 27 09:50:00.059: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_COMPLETE
*Jun 27 09:50:00.059: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM4  
                       New State = IKE_I_MM5 

*Jun 27 09:50:00.827: ISAKMP (0:134217729): received packet from 209.165.200.2 
                      dport 500 sport 500 Global (I) MM_KEY_EXCH
*Jun 27 09:50:00.827: ISAKMP:(0:1:SW:1):Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
*Jun 27 09:50:00.827: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM5  
                       New State = IKE_I_MM6 

*Jun 27 09:50:00.859: ISAKMP:(0:1:SW:1): processing ID payload. message ID = 0
*Jun 27 09:50:00.859: ISAKMP (0:134217729): ID payload 
        next-payload : 8
        type         : 1 
        address      : 209.165.200.2 
        protocol     : 17 
        port         : 500 
        length       : 12
*Jun 27 09:50:00.859: ISAKMP:(0:1:SW:1): processing HASH payload. message ID = 0
*Jun 27 09:50:00.859: ISAKMP:(0:1:SW:1):SA authentication status:
        authenticated
*Jun 27 09:50:00.859: ISAKMP:(0:1:SW:1):SA has been authenticated 
                      with 209.165.200.2
*Jun 27 09:50:00.859: ISAKMP:(0:1:SW:1):: peer matches *none* of the profiles
*Jun 27 09:50:00.859: ISAKMP: Trying to insert a peer 172.16.1.2/209.165.200.2/500/,
                        and inserted successfully.
*Jun 27 09:50:00.859: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_MAIN_MODE
*Jun 27 09:50:00.859: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM6  
                       New State = IKE_I_MM6 

*Jun 27 09:50:00.919: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PROCESS_COMPLETE
*Jun 27 09:50:00.919: ISAKMP:(0:1:SW:1):Old State = IKE_I_MM6  
                        New State = IKE_P1_COMPLETE 

*Jun 27 09:50:00.959: ISAKMP:(0:1:SW:1):beginning Quick Mode exchange, 
                       M-ID of 1689610294
*Jun 27 09:50:01.007: ISAKMP:(0:1:SW:1): sending packet to 209.165.200.2 
                       my_port 500 peer_port 500 (I) QM_IDLE      
*Jun 27 09:50:01.007: ISAKMP:(0:1:SW:1):Node 1689610294, Input = 
                       IKE_MESG_INTERNAL, IKE_INIT_QM
*Jun 27 09:50:01.007: ISAKMP:(0:1:SW:1):Old State = IKE_QM_READY  
                       New State = IKE_QM_I_QM1
*Jun 27 09:50:01.007: ISAKMP:(0:1:SW:1):Input = IKE_MESG_INTERNAL, 
                      IKE_PHASE1_COMPLETE
*Jun 27 09:50:01.007: ISAKMP:(0:1:SW:1):Old State = IKE_P1_COMPLETE  
                       New State = IKE_P1_COMPLETE 

*Jun 27 09:50:01.839: ISAKMP (0:134217729): received packet from 
                      209.165.200.2 dport 500 sport 500 Global (I) QM_IDLE      
*Jun 27 09:50:01.839: ISAKMP:(0:1:SW:1): processing HASH payload. 
                      message ID = 1689610294
*Jun 27 09:50:01.839: ISAKMP:(0:1:SW:1): processing SA payload. 
                      message ID = 1689610294
*Jun 27 09:50:01.839: ISAKMP:(0:1:SW:1):Checking IPSec proposal 1
*Jun 27 09:50:01.839: ISAKMP: transform 1, ESP_DES
*Jun 27 09:50:01.839: ISAKMP:   attributes in transform:
*Jun 27 09:50:01.839: ISAKMP:      encaps is 1 (Tunnel)
*Jun 27 09:50:01.839: ISAKMP:      SA life type in seconds
*Jun 27 09:50:01.839: ISAKMP:      SA life duration (basic) of 3600
*Jun 27 09:50:01.839: ISAKMP:      SA life type in kilobytes
*Jun 27 09:50:01.839: ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0 
*Jun 27 09:50:01.839: ISAKMP:      authenticator is HMAC-MD5
*Jun 27 09:50:01.839: ISAKMP:(0:1:SW:1):atts are acceptable.
*Jun 27 09:50:01.839: IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) INBOUND local= 172.16.1.2, remote= 209.165.200.2, 
    local_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel), 
    lifedur= 0s and 0kb, 
    spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x2
*Jun 27 09:50:01.839: IPSEC(kei_proxy): head = mymap, map->ivrf = ,
                           kei->ivrf = 
*Jun 27 09:50:01.839: ISAKMP:(0:1:SW:1): processing NONCE payload. 
                       message ID = 1689610294
*Jun 27 09:50:01.839: ISAKMP:(0:1:SW:1): processing ID payload. 
                       message ID = 1689610294
*Jun 27 09:50:01.839: ISAKMP:(0:1:SW:1): processing ID payload. 
                        message ID = 1689610294
*Jun 27 09:50:01.839: IPSec: Flow_switching Allocated flow for flow_id 134217731 
*Jun 27 09:50:01.839: IPSec: Flow_switching Allocated flow for flow_id 134217732 
*Jun 27 09:50:01.899: %CRYPTO-5-SESSION_STATUS: Crypto tunnel is UP  .  
                      Peer 209.165.200.2:500       Id: 209.165.200.2
*Jun 27 09:50:01.899: ISAKMP: Locking peer struct 0x2BEDC78, IPSEC
                       refcount 1 for for stuff_ke
*Jun 27 09:50:01.899: ISAKMP:(0:1:SW:1): Creating IPSec SAs
*Jun 27 09:50:01.899:         inbound SA from 209.165.200.2 to 172.16.1.2 
                               (f/i)  0/ 0
                              (proxy 192.168.1.0 to 172.16.2.0)
*Jun 27 09:50:01.899:         has spi 0xE89A0245 and conn_id 2000 and flags 2
*Jun 27 09:50:01.899:         lifetime of 3600 seconds
*Jun 27 09:50:01.899:         lifetime of 4608000 kilobytes
*Jun 27 09:50:01.899:         has client flags 0x0
*Jun 27 09:50:01.899:         outbound SA from 172.16.1.2 to 209.165.200.2 
                               (f/i) 0/0
                                (proxy 172.16.2.0 to 192.168.1.0)
*Jun 27 09:50:01.899:         has spi -1242011716 and conn_id 2001 and flags A
*Jun 27 09:50:01.899:         lifetime of 3600 seconds
*Jun 27 09:50:01.899:         lifetime of 4608000 kilobytes
*Jun 27 09:50:01.899:         has client flags 0x0
*Jun 27 09:50:01.899: ISAKMP:(0:1:SW:1): sending packet to 209.165.200.2 
                       my_port 500 peer_port 500 (I) QM_IDLE      
*Jun 27 09:50:01.899: ISAKMP:(0:1:SW:1):deleting node 1689610294 error 
                       FALSE reason ""
*Jun 27 09:50:01.899: ISAKMP:(0:1:SW:1):Node 1689610294, Input = 
                       IKE_MESG_FROM_PEER, IKE_QM_EXCH
*Jun 27 09:50:01.899: ISAKMP:(0:1:SW:1):Old State = IKE_QM_I_QM1  
                        New State = IKE_QM_PHASE2_COMPLETE
*Jun 27 09:50:01.907: IPSEC(key_engine): got a queue event with 2 kei messages
*Jun 27 09:50:01.907: IPSEC(initialize_sas): ,
  (key eng. msg.) INBOUND local= 172.16.1.2, remote= 209.165.200.2, 
    local_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel), 
    lifedur= 3600s and 4608000kb, 
    spi= 0xE89A0245(3902407237), conn_id= 134219728, keysize= 0, flags= 0x2
*Jun 27 09:50:01.907: IPSEC(initialize_sas): ,
  (key eng. msg.) OUTBOUND local= 172.16.1.2, remote= 209.165.200.2, 
    local_proxy= 172.16.2.0/255.255.255.0/0/0 (type=4), 
    remote_proxy= 192.168.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac  (Tunnel), 
    lifedur= 3600s and 4608000kb, 
    spi= 0xB5F867BC(3052955580), conn_id= 134219729, keysize= 0,flags= 0xA
*Jun 27 09:50:01.907: IPSEC(kei_proxy): head = mymap, map->ivrf = , kei->ivrf = 
*Jun 27 09:50:01.907: IPSEC(crypto_ipsec_sa_find_ident_head): 
                      reconnecting with the same proxies and 209.165.200.2
*Jun 27 09:50:01.907: IPSEC(mtree_add_ident): src 172.16.2.0, dest 
                       192.168.1.0, dest_port 0

*Jun 27 09:50:01.907: IPSEC(create_sa): sa created,
  (sa) sa_dest= 172.16.1.2, sa_prot= 50, 
    sa_spi= 0xE89A0245(3902407237), 
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 134219728
*Jun 27 09:50:01.907: IPSEC(create_sa): sa created,
  (sa) sa_dest= 209.165.200.2, sa_prot= 50, 
    sa_spi= 0xB5F867BC(3052955580), 
    sa_trans= esp-des esp-md5-hmac , sa_conn_id= 134219729

*Jun 27 09:50:51.927: ISAKMP:(0:1:SW:1):purging node 1689610294


PAT-Router#debug ip nat detail
IP NAT detailed debugging is on
PAT-Router#show debug
Generic IP:
  IP NAT detailed debugging is on
PAT-Router#

!--- The "i" in this line indicates the packet is traveling from the !--- inside to the outside (from a NAT perspective) interface. The number in !--- the brackets is the identification number in the IP packet. This is !--- useful when correlating information with sniffer traces taken with a !--- network analyzer while troubleshooting problems.

*Jun 27 09:49:57.727: NAT*: i: udp (172.16.1.2, 500) -> (209.165.200.2, 500) [94]

!--- The "s" in this line shows the source address of the packet and how it is !--- being translated. 

*Jun 27 09:49:57.727: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [94]
*Jun 27 09:49:58.927: NAT*: o: udp (209.165.200.2, 500) -> (209.165.201.2, 500) [100]     
*Jun 27 09:49:58.927: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [100]
*Jun 27 09:49:59.147: NAT*: i: udp (172.16.1.2, 500) -> (209.165.200.2, 500) [95]
*Jun 27 09:49:59.147: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [95]
*Jun 27 09:49:59.755: NAT*: o: udp (209.165.200.2, 500) -> (209.165.201.2, 500) [101]
*Jun 27 09:49:59.755: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [101]
*Jun 27 09:49:59.947: NAT*: i: udp (172.16.1.2, 500) -> (209.165.200.2, 500) [96]
*Jun 27 09:49:59.947: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [96]
*Jun 27 09:50:00.667: NAT*: o: udp (209.165.200.2, 500) -> (209.165.201.2, 500) [102]
*Jun 27 09:50:00.667: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [102]
*Jun 27 09:50:00.895: NAT*: i: udp (172.16.1.2, 500) -> (209.165.200.2, 500) [97]
*Jun 27 09:50:00.895: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [97]
*Jun 27 09:50:01.679: NAT*: o: udp (209.165.200.2, 500) -> (209.165.201.2, 500) [103]
*Jun 27 09:50:01.679: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [103]
*Jun 27 09:50:01.787: NAT*: i: udp (172.16.1.2, 500) -> (209.165.200.2, 500) [98]
*Jun 27 09:50:01.787: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [98]
*Jun 27 09:50:23.667: NAT*: i: esp (172.16.1.2, 26556) -> (209.165.200.2, 0) [99]
*Jun 27 09:50:23.667: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [99]
*Jun 27 09:50:23.715: NAT*: o: esp (209.165.200.2, -392560059) -> (209.165.201.2, 0) [104]     
*Jun 27 09:50:23.715: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [104]
*Jun 27 09:50:23.787: NAT*: i: esp (172.16.1.2, 26556) -> (209.165.200.2, 0) [100]
*Jun 27 09:50:23.787: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [100]
*Jun 27 09:50:23.847: NAT*: o: esp (209.165.200.2, 581) -> (209.165.201.2, 0) [105]
*Jun 27 09:50:23.847: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [105]
*Jun 27 09:50:23.915: NAT*: i: esp (172.16.1.2, 26556) -> (209.165.200.2, 0) [101]
*Jun 27 09:50:23.915: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [101]
*Jun 27 09:50:23.967: NAT*: o: esp (209.165.200.2, 581) -> (209.165.201.2, 0) [106]
*Jun 27 09:50:23.967: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [106]
*Jun 27 09:50:24.047: NAT*: i: esp (172.16.1.2, 26556) -> (209.165.200.2, 0) [102]
*Jun 27 09:50:24.047: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [102]
*Jun 27 09:50:24.095: NAT*: o: esp (209.165.200.2, 581) -> (209.165.201.2, 0) [107]
*Jun 27 09:50:24.095: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [107]
*Jun 27 09:50:24.207: NAT*: i: esp (172.16.1.2, 26556) -> (209.165.200.2, 0) [103]
*Jun 27 09:50:24.207: NAT*: s=172.16.1.2->209.165.201.2, d=209.165.200.2 [103]
*Jun 27 09:50:24.267: NAT*: o: esp (209.165.200.2, 581) -> (209.165.201.2, 0) [108]
*Jun 27 09:50:24.267: NAT*: s=209.165.200.2, d=209.165.201.2->172.16.1.2 [108]