Configuring IPSec Between a Catalyst 4224 Access Gateway Switch and a Cisco IOS Router
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Contents
Introduction
This document illustrates the sample configuration of IPSec between a Cisco Catalyst 4224 Access Gateway Switch and a Cisco router that runs Cisco IOS® Software. Encryption is done between VLAN1 of the access gateway (where the crypto map is applied) and the FastEthernet0/1 interface of the router.
Prerequisites
Requirements
There are no specific prerequisites for this document.
Components Used
The information in this document is based on these software and hardware versions:
-
Cisco IOS Software Release 12.(1)14
-
IOS c4224 Software 12.2(2)YC1
The information presented in this document was created from devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If you are working in a live network, ensure that you understand the potential impact of any command before using it.
Conventions
For more information on document conventions, refer to Cisco Technical Tips Conventions.
Configure
In this section, you are presented with the information to configure the features described in this document.
Note: To find additional information on the commands used in this document, use the Command Lookup Tool (registered customers only) .
Network Diagram
This document uses this network setup:
Configurations
This document uses these configurations:
| Catalyst 4224 Access Gateway Switch |
|---|
triana#show version Cisco Internetwork Operating System Software IOS (tm) c4224 Software (c4224-IK9O3SX3-M), Version 12.2(2)YC1, EARLY DEPLOYMENT RELEASE SOFTWARE (fc2) 26 FastEthernet/IEEE 802.3 interface(s) 2 Serial(sync/async) network interface(s) 2 Channelized E1/PRI port(s) 1 Virtual Private Network (VPN) Module(s) !--- Access gateway has onboard encryption service adapter. 8 Voice FXS interface(s) 256K bytes of non-volatile configuration memory. 31744K bytes of processor board System flash (Read/Write) Configuration register is 0x2102 triana#show run Building configuration... Current configuration : 5111 bytes ! ! Last configuration change at 13:56:01 UTC Wed May 29 2002 ! NVRAM config last updated at 13:56:03 UTC Wed May 29 2002 ! version 12.2 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname triana ! no logging buffered enable password ww ! memory-size iomem 25 !--- Create the VLANS as required. vlan 1 name default vlan 3 name VLAN0003 !--- Create the VLANS as required. vlan 2 name data vlan 999 name VLAN0999 ! ip subnet-zero no ip domain-lookup ! ip audit notify log ip audit po max-events 100 ip ssh time-out 120 ip ssh authentication-retries 3 isdn switch-type primary-net5 voicecard mode toll-by-pass ! ! ! ! ! ! ! ccm-manager mgcp ! !--- Define Phase 1 policy. crypto isakmp policy 10 authentication pre-share crypto isakmp key yoursecretkey address 209.165.201.6 ! ! !--- Define Phase 2 policy. crypto ipsec transform-set basic esp-des esp-md5-hmac crypto mib ipsec flowmib history tunnel size 200 crypto mib ipsec flowmib history failure size 200 ! !--- Define Phase 2 policy (continued). !--- Define the encryption peer and crypto map parameters. crypto map mymap 10 ipsec-isakmp set peer 209.165.201.6 set transform-set basic match address cryptoacl ! ! no spanning-tree optimize bpdu transmission no spanning-tree vlan 1 no spanning-tree vlan 2 no spanning-tree vlan 3 ! controller E1 2/0 ! controller E1 2/1 ! translation-rule 1 Rule 0 ^... 1 ! translation-rule 2 Rule 0 ^10.. 0 Rule 1 ^11.. 1 Rule 2 ^12.. 2 Rule 3 ^13.. 3 Rule 4 ^14.. 4 Rule 5 ^15.. 5 Rule 6 ^16.. 6 Rule 7 ^17.. 7 Rule 8 ^18.. 8 Rule 9 ^19.. 9 ! translation-rule 6 Rule 0 ^112. 119 ! translation-rule 7 Rule 0 ^1212 1196 ! translation-rule 3 Rule 0 ^. 0 ! translation-rule 9 Rule 0 ^. 9 ! translation-rule 99 Rule 0 ^90.. 0 Rule 1 ^91.. 1 Rule 2 ^92.. 2 Rule 3 ^93.. 3 Rule 4 ^94.. 4 Rule 5 ^95.. 5 Rule 6 ^96.. 6 Rule 7 ^97.. 7 Rule 8 ^98.. 8 Rule 9 ^99.. 9 ! translation-rule 999 Rule 0 ^2186 1196 ! translation-rule 1122 Rule 0 ^1122 528001 Rule 1 ^1121 519352 ! translation-rule 20 Rule 0 ^000 500 ! ! ! interface Loopback0 no ip address ! interface FastEthernet0/0 no ip address duplex auto speed auto ! interface Serial1/0 no ip address no fair-queue ! interface Serial1/1 no ip address ! interface FastEthernet5/0 no ip address duplex auto speed auto ! interface FastEthernet5/1 no ip address shutdown duplex auto speed auto switchport voice vlan 3 spanning-tree portfast ! !--- For the lab setup, a host is connected on this port. interface FastEthernet5/2 no ip address duplex auto speed auto !--- Place the port in VLAN 2. switchport access vlan 2 spanning-tree portfast ! interface FastEthernet5/3 no ip address shutdown duplex auto speed auto switchport access vlan 999 spanning-tree portfast ! interface FastEthernet5/4 no ip address duplex auto speed auto switchport access vlan 2 switchport voice vlan 3 spanning-tree portfast ! interface FastEthernet5/5 no ip address duplex auto speed auto ! interface FastEthernet5/6 no ip address duplex auto speed auto ! interface FastEthernet5/7 no ip address duplex auto speed auto ! interface FastEthernet5/8 no ip address duplex auto speed auto ! interface FastEthernet5/9 no ip address duplex auto speed auto ! interface FastEthernet5/10 no ip address duplex auto speed auto switchport trunk allowed vlan 1-3 switchport mode trunk !--- By default, the port belongs to VLAN 1. interface FastEthernet5/11 no ip address duplex auto speed auto ! interface FastEthernet5/12 no ip address duplex auto speed auto ! interface FastEthernet5/13 no ip address duplex auto speed auto ! interface FastEthernet5/14 no ip address duplex auto speed auto ! interface FastEthernet5/15 no ip address duplex auto speed auto ! interface FastEthernet5/16 no ip address duplex auto speed auto ! interface FastEthernet5/17 no ip address duplex auto speed auto ! interface FastEthernet5/18 no ip address duplex auto speed auto ! interface FastEthernet5/19 no ip address duplex auto speed auto ! interface FastEthernet5/20 no ip address duplex auto speed auto ! interface FastEthernet5/21 no ip address duplex auto speed auto ! interface FastEthernet5/22 no ip address duplex auto speed auto ! interface FastEthernet5/23 no ip address duplex auto speed auto ! interface FastEthernet5/24 no ip address duplex auto speed auto ! !--- Define an IP address and apply crypto map to enable !--- IPSec processing on this interface. interface Vlan 1 ip address 209.165.201.5 255.255.255.224 crypto map mymap ! !--- Define an IP address for VLAN 2. interface Vlan 2 ip address 192.168.10.1 255.255.255.0 ! ip classless ip route 10.48.66.0 255.255.254.0 209.165.201.6 no ip http server ! ! ip access-list extended cryptoacl remark This is crypto ACL permit ip 192.168.10.0 0.0.0.255 10.48.66.0 0.0.1.255 call rsvp-sync ! voice-port 4/0 output attenuation 0 ! voice-port 4/1 output attenuation 0 ! voice-port 4/2 output attenuation 0 ! voice-port 4/3 output attenuation 0 ! voice-port 4/4 output attenuation 0 ! voice-port 4/5 output attenuation 0 ! voice-port 4/6 output attenuation 0 ! voice-port 4/7 output attenuation 0 ! mgcp no mgcp timer receive-rtcp ! mgcp profile default ! dial-peer cor custom ! ! ! dial-peer voice 1 voip ! dial-peer voice 2 pots shutdown ! ! line con 0 exec-timeout 0 0 length 0 line vty 0 4 password ww login ! end triana# |
| Cisco IOS Router |
|---|
brussels#show run Building configuration... Current configuration : 1538 bytes ! ! Last configuration change at 17:16:19 UTC Wed May 29 2002 ! NVRAM config last updated at 13:58:44 UTC Wed May 29 2002 ! version 12.1 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname brussels ! enable secret 5 $1$/vuT$08lTvZgSFJ0xq5uTFc94u. ! ! ! ! ! ! ip subnet-zero no ip domain-lookup ! ip cef ip audit notify log ip audit po max-events 100 ! ! !--- Define Phase 1 policy. crypto isakmp policy 10 authentication pre-share crypto isakmp key yoursecretkey address 209.165.201.5 ! ! !--- Define the encryption policy for this setup. crypto ipsec transform-set basic esp-des esp-md5-hmac ! !--- Define a static crypto map entry for the remote PIX !--- with mode ipsec-isakmp. !--- This indicates that Internet Key Exchange (IKE) !--- is used to establish the IPSec !--- security associations for protecting the traffic !--- specified by this crypto map entry. crypto map vpnmap 10 ipsec-isakmp set peer 209.165.201.5 set transform-set basic match address cryptoacl ! ! ! ! ! ! interface FastEthernet0/0 ip address 10.48.66.34 255.255.254.0 no ip mroute-cache duplex auto speed auto ! interface Serial0/0 no ip address shutdown ! !--- Enable crypto processing on the interface !--- where traffic leaves the network. interface FastEthernet0/1 ip address 209.165.201.6 255.255.255.224 no ip mroute-cache duplex auto speed auto crypto map vpnmap ! interface Serial0/1 no ip address shutdown ! interface Group-Async1 no ip address encapsulation ppp async mode dedicated ppp authentication pap group-range 33 40 ! ip classless ip route 192.168.10.0 255.255.255.0 209.165.201.5 ip http server ! ! !--- This access list defines interesting traffic for IPSec. ip access-list extended cryptoacl permit ip 10.48.66.0 0.0.1.255 192.168.10.0 0.0.0.255 ! ! line con 0 exec-timeout 0 0 length 0 line 33 40 modem InOut line aux 0 line vty 0 4 login local ! end |
Verify
This section provides information you can use to confirm your configuration is working properly. Verification of IPSec operation is done with debug commands. An extended ping is attempted from the router to a host behind the access gateway.
Certain show commands are supported by the Output Interpreter Tool (registered customers only) , which allows you to view an analysis of show command output.
-
show debug—Displays the current debug settings.
-
show crypto isakmp sa—Displays all current IKE security associations (SAs) at a peer.
-
show crypto ipsec sa—Displays the settings used by current SAs.
Troubleshoot
This section provides information you can use to troubleshoot your configuration.
Troubleshooting Commands
Note: Before issuing debug commands, please see Important Information on Debug Commands.
-
debug crypto ipsec—Displays IPSec events.
-
debug crypto isakmp—Displays messages about IKE events.
-
debug crypto engine—Displays information from the crypto engine.
Sample Debugs
This section provides sample debug output for the access gateway and the router.
Catalyst 4224 Access Gateway Switch
triana#debug crypto ipsec
Crypto IPSEC debugging is on
triana#debug crypto isakmp
Crypto ISAKMP debugging is on
triana#debug crypto engine
Crypto Engine debugging is on
triana#show debug
Cryptographic Subsystem:
Crypto ISAKMP debugging is on
Crypto Engine debugging is on
Crypto IPSEC debugging is on
triana#
May 29 18:01:57.746: ISAKMP (0:0): received packet from 209.165.201.6 (N) NEW SA
May 29 18:01:57.746: ISAKMP: local port 500, remote port 500
May 29 18:01:57.746: ISAKMP (0:1): Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
Old State = IKE_READY New State = IKE_R_MM1
May 29 18:01:57.746: ISAKMP (0:1): processing SA payload. message ID = 0
May 29 18:01:57.746: ISAKMP (0:1): found peer pre-shared key
matching 209.165.201.6
!--- 4224 access gateway checks the attributes for Internet Security !--- Association & Key Management Protocol (ISAKMP) negotiation !--- against the policy it has in its local configuration.
May 29 18:01:57.746: ISAKMP (0:1): Checking ISAKMP transform 1
against priority 10 policy
May 29 18:01:57.746: ISAKMP: encryption DES-CBC
May 29 18:01:57.746: ISAKMP: hash SHA
May 29 18:01:57.746: ISAKMP: default group 1
May 29 18:01:57.746: ISAKMP: auth pre-share
!--- The received attributes are acceptable !--- against the configured set of attributes.
May 29 18:01:57.746: ISAKMP (0:1): atts are acceptable. Next payload is 0
May 29 18:01:57.746: CryptoEngine0: generate alg parameter
May 29 18:01:57.746: CryptoEngine0: CRYPTO_ISA_DH_CREATE(hw)(ipsec)
May 29 18:01:57.898: CRYPTO_ENGINE: Dh phase 1 status: 0
May 29 18:01:57.898: ISAKMP (0:1): Input = IKE_MESG_INTERNAL,
IKE_PROCESS_MAIN_MODE Old State = IKE_R_MM1 New State = IKE_R_MM1
May 29 18:01:57.898: ISAKMP (0:1): SA is doing pre-shared key authentication
using id type ID_IPV4_ADDR
May 29 18:01:57.898: ISAKMP (0:1): sending packet to 209.165.201.6 (R) MM_SA_SETUP
May 29 18:01:57.898: ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
Old State = IKE_R_MM1 New State = IKE_R_MM2
May 29 18:01:58.094: ISAKMP (0:1): received packet from 209.165.201.6
(R) MM_SA_SETUP
May 29 18:01:58.094: ISAKMP (0:1): Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
Old State = IKE_R_MM2 New State = IKE_R_MM3
May 29 18:01:58.098: ISAKMP (0:1): processing KE payload. message ID = 0
May 29 18:01:58.098: CryptoEngine0: generate alg parameter
May 29 18:01:58.098: CryptoEngine0: CRYPTO_ISA_DH_SHARE_SECRET(hw)(ipsec)
May 29 18:01:58.246: ISAKMP (0:1): processing NONCE payload. message ID = 0
May 29 18:01:58.246: ISAKMP (0:1): found peer pre-shared key matching 209.165.201.6
May 29 18:01:58.250: CryptoEngine0: create ISAKMP SKEYID for conn id 1
May 29 18:01:58.250: CryptoEngine0: CRYPTO_ISA_SA_CREATE(hw)(ipsec)
May 29 18:01:58.250: ISAKMP (0:1): SKEYID state generated
May 29 18:01:58.250: ISAKMP (0:1): processing vendor id payload
May 29 18:01:58.250: ISAKMP (0:1): speaking to another IOS box!
May 29 18:01:58.250: ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE
Old State = IKE_R_MM3 New State = IKE_R_MM3
May 29 18:01:58.250: ISAKMP (0:1): sending packet to 209.165.201.6 (R) MM_KEY_EXCH
May 29 18:01:58.250: ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
Old State = IKE_R_MM3 New State = IKE_R_MM4
May 29 18:01:58.490: ISAKMP (0:1): received packet from 209.165.201.6
(R) MM_KEY_EXCH
May 29 18:01:58.490: CryptoEngine0: CRYPTO_ISA_IKE_DECRYPT(hw)(ipsec)
May 29 18:01:58.490: ISAKMP (0:1): Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH
Old State = IKE_R_MM4 New State = IKE_R_MM5
May 29 18:01:58.490: ISAKMP (0:1): processing ID payload. message ID = 0
May 29 18:01:58.490: ISAKMP (0:1): processing HASH payload. message ID = 0
May 29 18:01:58.490: CryptoEngine0: generate hmac context for conn id 1
May 29 18:01:58.490: CryptoEngine0: CRYPTO_ISA_IKE_HMAC(hw)(ipsec)
May 29 18:01:58.490: ISAKMP (0:1): SA has been authenticated with 209.165.201.6
!--- Phase 1 authentication is successful and the SA is authenticated.
May 29 18:01:58.494: ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE
Old State = IKE_R_MM5 New State = IKE_R_MM5
May 29 18:01:58.494: ISAKMP (1): ID payload
next-payload : 8
type : 1
protocol : 17
port : 500
length : 8
May 29 18:01:58.494: ISAKMP (1): Total payload length: 12
May 29 18:01:58.494: CryptoEngine0: generate hmac context for conn id 1
May 29 18:01:58.494: CryptoEngine0: CRYPTO_ISA_IKE_HMAC(hw)(ipsec)
May 29 18:01:58.494: CryptoEngine0: clear dh number for conn id 1
May 29 18:01:58.494: CryptoEngine0: CRYPTO_ISA_DH_DELETE(hw)(ipsec)
May 29 18:01:58.494: CryptoEngine0: CRYPTO_ISA_IKE_ENCRYPT(hw)(ipsec)
May 29 18:01:58.494: ISAKMP (0:1): sending packet to 209.165.201.6 (R) QM_IDLE
May 29 18:01:58.498: ISAKMP (0:1): Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE
Old State = IKE_R_MM5 New State = IKE_P1_COMPLETE
May 29 18:01:58.518: ISAKMP (0:1): received packet from 209.165.201.6 (R) QM_IDLE
May 29 18:01:58.518: CryptoEngine0: CRYPTO_ISA_IKE_DECRYPT(hw)(ipsec)
May 29 18:01:58.518: CryptoEngine0: generate hmac context for conn id 1
May 29 18:01:58.518: CryptoEngine0: CRYPTO_ISA_IKE_HMAC(hw)(ipsec)
May 29 18:01:58.522: ISAKMP (0:1): processing HASH payload.
message ID = -1809462101
May 29 18:01:58.522: ISAKMP (0:1): processing SA payload.
message ID = -1809462101
May 29 18:01:58.522: ISAKMP (0:1): Checking IPSec proposal 1
May 29 18:01:58.522: ISAKMP: transform 1, ESP_DES
May 29 18:01:58.522: ISAKMP: attributes in transform:
May 29 18:01:58.522: ISAKMP: encaps is 1
May 29 18:01:58.522: ISAKMP: SA life type in seconds
May 29 18:01:58.522: ISAKMP: SA life duration (basic) of 3600
May 29 18:01:58.522: ISAKMP: SA life type in kilobytes
May 29 18:01:58.522: ISAKMP: SA life duration (VPI) of 0x0 0x46 0x50 0x0
May 29 18:01:58.522: ISAKMP: authenticator is HMAC-MD5
May 29 18:01:58.522: validate proposal 0
May 29 18:01:58.522: ISAKMP (0:1): atts are acceptable.
May 29 18:01:58.522: IPSEC(validate_proposal_request): proposal part #1,
!--- After the attributes are negotiated, !--- IKE asks IPSec to validate the proposal.
(key eng. msg.) dest= 209.165.201.5, src= 209.165.201.6,
dest_proxy= 192.168.10.0/255.255.255.0/0/0 (type=4),
src_proxy= 10.48.66.0/255.255.254.0/0/0 (type=4),
protocol= ESP, transform= esp-des esp-md5-hmac ,
lifedur= 0s and 0kb,
spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x4
!--- spi is still zero because SAs have not been set.
May 29 18:01:58.522: validate proposal request 0
May 29 18:01:58.522: ISAKMP (0:1): processing NONCE payload.
message ID = -1809462101
May 29 18:01:58.522: ISAKMP (0:1): processing ID payload.
message ID = -1809462101
May 29 18:01:58.522: ISAKMP (1): ID_IPV4_ADDR_SUBNET src 10.48.66.0/255.255.254.0
prot 0 port 0
May 29 18:01:58.522: ISAKMP (0:1): processing ID payload.
message ID = -1809462101
May 29 18:01:58.522: ISAKMP (1): ID_IPV4_ADDR_SUBNET dst 192.168.10.0/255.255.255.0
prot 0 port 0
May 29 18:01:58.522: ISAKMP (0:1): asking for 1 spis from ipsec
May 29 18:01:58.522: ISAKMP (0:1): Node -1809462101, Input = IKE_MESG_FROM_PEER,
IKE_QM_EXCH
Old State = IKE_QM_READY New State = IKE_QM_SPI_STARVE
May 29 18:01:58.526: IPSEC(key_engine): got a queue event...
May 29 18:01:58.526: IPSEC(spi_response): getting spi 3384026087 for SA
from 209.165.201.6 to 209.165.201.5 for prot 3
May 29 18:01:58.526: ISAKMP: received ke message (2/1)
May 29 18:01:58.774: CryptoEngine0: generate hmac context for conn id 1
May 29 18:01:58.774: CryptoEngine0: CRYPTO_ISA_IKE_HMAC(hw)(ipsec)
May 29 18:01:58.774: CryptoEngine0: CRYPTO_ISA_IKE_ENCRYPT(hw)(ipsec)
May 29 18:01:58.774: ISAKMP (0:1): sending packet to 209.165.201.6 (R) QM_IDLE
May 29 18:01:58.774: ISAKMP (0:1): Node -1809462101, Input = IKE_MESG_FROM_IPSEC,
IKE_SPI_REPLY
Old State = IKE_QM_SPI_STARVE New State = IKE_QM_R_QM2
May 29 18:01:58.830: ISAKMP (0:1): received packet from 209.165.201.6 (R) QM_IDLE
May 29 18:01:58.830: CryptoEngine0: CRYPTO_ISA_IKE_DECRYPT(hw)(ipsec)
May 29 18:01:58.834: CryptoEngine0: generate hmac context for conn id 1
May 29 18:01:58.834: CryptoEngine0: CRYPTO_ISA_IKE_HMAC(hw)(ipsec)
May 29 18:01:58.834: ipsec allocate flow 0
May 29 18:01:58.834: ipsec allocate flow 0
May 29 18:01:58.834: CryptoEngine0: CRYPTO_ISA_IPSEC_KEY_CREATE(hw)(ipsec)
May 29 18:01:58.834: CryptoEngine0: CRYPTO_ISA_IPSEC_KEY_CREATE(hw)(ipsec)
May 29 18:01:58.838: ISAKMP (0:1): Creating IPSec SAs
May 29 18:01:58.838: inbound SA from 209.165.201.6 to 209.165.201.5
(proxy 10.48.66.0 to 192.168.10.0)
May 29 18:01:58.838: has spi 0xC9B423E7 and conn_id 50 and flags 4
May 29 18:01:58.838: lifetime of 3600 seconds
May 29 18:01:58.838: lifetime of 4608000 kilobytes
May 29 18:01:58.838: outbound SA from 209.165.201.5 to 209.165.201.6
(proxy 192.168.10.0 to 10.48.66.0)
May 29 18:01:58.838: has spi 561973207 and conn_id 51 and flags 4
May 29 18:01:58.838: lifetime of 3600 seconds
May 29 18:01:58.838: lifetime of 4608000 kilobytes
May 29 18:01:58.838: ISAKMP (0:1): deleting node -1809462101 error FALSE reason
"quick mode done (await()"
May 29 18:01:58.838: ISAKMP (0:1): Node -1809462101, Input = IKE_MESG_FROM_PEER,
IKE_QM_EXCH
Old State = IKE_QM_R_QM2 New State = IKE_QM_PHASE2_COMPLETE
May 29 18:01:58.838: IPSEC(key_engine): got a queue event...
May 29 18:01:58.838: IPSEC(initialize_sas): ,
(key eng. msg.) dest= 209.165.201.5, src= 209.165.201.6,
dest_proxy= 192.168.10.0/255.255.255.0/0/0 (type=4),
src_proxy= 10.48.66.0/255.255.254.0/0/0 (type=4),
protocol= ESP, transform= esp-des esp-md5-hmac ,
lifedur= 3600s and 4608000kb,
spi= 0xC9B423E7(3384026087), conn_id= 50, keysize= 0, flags= 0x4
!--- IPSec SAs are now initialized and encrypted !--- communication can now take place.
May 29 18:01:58.838: IPSEC(initialize_sas): ,
(key eng. msg.) src= 209.165.201.5, dest= 209.165.201.6,
src_proxy= 192.168.10.0/255.255.255.0/0/0 (type=4),
dest_proxy= 10.48.66.0/255.255.254.0/0/0 (type=4),
protocol= ESP, transform= esp-des esp-md5-hmac ,
lifedur= 3600s and 4608000kb,
spi= 0x217F07D7(561973207), conn_id= 51, keysize= 0, flags= 0x4
!--- IPSec SAs are now initialized and encrypted !--- communication can now take place.
May 29 18:01:58.838: IPSEC(create_sa): sa created,
(sa) sa_dest= 209.165.201.5, sa_prot= 50,
sa_spi= 0xC9B423E7(3384026087),
sa_trans= esp-des esp-md5-hmac , sa_conn_id= 50
May 29 18:01:58.838: IPSEC(create_sa): sa created,
(sa) sa_dest= 209.165.201.6, sa_prot= 50,
sa_spi= 0x217F07D7(561973207),
sa_trans= esp-des esp-md5-hmac , sa_conn_id= 51
!--- Observe that two IPSec SAs are created. !--- Recollect that IPSec SAs are bidirectional.
triana#
triana#
triana#
triana#show crypto isakmp sa
dst src state conn-id slot
209.165.201.5 209.165.201.6 QM_IDLE &n bsp; 1 0
triana#show crypto ipsec sa
interface: Vlan 1
Crypto map tag: mymap, local addr. 209.165.201.5
local ident (addr/mask/prot/port): (192.168.10.0/255.255.255.0/0/0)
remote ident (addr/mask/prot/port): (10.48.66.0/255.255.254.0/0/0)
current_peer: 209.165.201.6
PERMIT, flags={origin_is_acl,}
#pkts encaps: 4, #pkts encrypt: 4, #pkts digest 4
#pkts decaps: 4, #pkts decrypt: 4, #pkts verify 4
#pkts compressed: 0, #pkts decompressed: 0
#pkts not compressed: 0, #pkts compr. failed: 0, #pkts decompress failed: 0
#send errors 0, #recv errors 0
local crypto endpt.: 209.165.201.5, remote crypto endpt.: 209.165.201.6
path mtu 1500, media mtu 1500
current outbound spi: 217F07D7
inbound esp sas:
spi: 0xC9B423E7(3384026087)
transform: esp-des esp-md5-hmac ,
in use settings ={Tunnel, }
slot: 0, conn id: 50, flow_id: 1, crypto map: mymap
sa timing: remaining key lifetime (k/sec): (4607998/3536)
IV size: 8 bytes
replay detection support: Y
inbound ah sas:
inbound pcp sas:
outbound esp sas:
spi: 0x217F07D7(561973207)
transform: esp-des esp-md5-hmac ,
in use settings ={Tunnel, }
slot: 0, conn id: 51, flow_id: 2, crypto map: mymap
sa timing: remaining key lifetime (k/sec): (4607999/3536)
IV size: 8 bytes
replay detection support: Y
outbound ah sas:
outbound pcp sas:
triana#
Cisco IOS Router
brussels#show debug
Cryptographic Subsystem:
Crypto ISAKMP debugging is on
Crypto Engine debugging is on
Crypto IPSEC debugging is on
brussels#p
Protocol [ip]:
Target IP address: 192.168.10.5
Repeat count [5]:
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Source address or interface: fastethernet0/0
Type of service [0]:
Set DF bit in IP header? [no]:
Validate reply data? [no]:
Data pattern [0xABCD]:
Loose, Strict, Record, Timestamp, Verbose[none]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.5, timeout is 2 seconds:
May 29 18:01:54.285: IPSEC(sa_request): ,
(key eng. msg.) src= 209.165.201.6, dest= 209.165.201.5,
src_proxy= 10.48.66.0/255.255.254.0/0/0 (type=4),
dest_proxy= 192.168.10.0/255.255.255.0/0/0 (type=4),
protocol= ESP, transform= esp-des esp-md5-hmac ,
lifedur= 3600s and 4608000kb,
spi= 0x217F07D7(561973207), conn_id= 0, keysize= 0, flags= 0x4004
May 29 18:01:54.285: ISAKMP: received ke message (1/1)
May 29 18:01:54.285: ISAKMP: local port 500, remote port 500
May 29 18:01:54.289: ISAKMP (0:1): beginning Main Mode exchange
May 29 18:01:54.289: ISAKMP (1): sending packet to 209.165.201.5 (I) MM_NO_STATE
May 29 18:01:54.461: ISAKMP (1): received packet from 209.165.201.5 (I) MM_NO_STATE
May 29 18:01:54.461: ISAKMP (0:1): processing SA payload. message ID = 0
May 29 18:01:54.461: ISAKMP (0:1): Checking ISAKMP transform 1
against priority 10 policy
May 29 18:01:54.465: ISAKMP: encryption DES-CBC
May 29 18:01:54.465: ISAKMP: hash SHA
May 29 18:01:54.465: ISAKMP: default group 1
May 29 18:01:54.465: ISAKMP: auth pre-share
May 29 18:01:54.465: ISAKMP (0:1): atts are acceptable. Next payload is 0
May 29 18:01:54.465: CryptoEngine0: generate alg parameter
May 29 18:01:54.637: CRYPTO_ENGINE: Dh phase 1 status: 0
May 29 18:01:54.637: CRYPTO_ENGINE: Dh phase 1 status: 0
May 29 18:01:54.637: ISAKMP (0:1): SA is doing pre-shared key authentication
May 29 18:01:54.637: ISAKMP (1): SA is doing pre-shared key authentication using
id type ID_IPV4_ADDR
May 29 18:01:54.641: ISAKMP (1): sending packet to 209.165.201.5 (I) MM_SA_SETUP
May 29 18:01:54.805: ISAKMP (1): received packet from 209.165.201.5 (I) MM_SA_SETUP
May 29 18:01:54.805: ISAKMP (0:1): processing KE payload. message ID = 0
May 29 18:01:54.805: CryptoEngine0: generate alg parameter
May 29 18:01:55.021: ISAKMP (0:1): processing NONCE payload. messa.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 20/21/24 ms
brussels#ge ID = 0
May 29 18:01:55.021: CryptoEngine0: create ISAKMP SKEYID for conn id 1
May 29 18:01:55.025: ISAKMP (0:1): SKEYID state generated
May 29 18:01:55.029: ISAKMP (0:1): processing vendor id payload
May 29 18:01:55.029: ISAKMP (0:1): speaking to another IOS box!
May 29 18:01:55.029: ISAKMP (1): ID payload
next-payload : 8
type : 1
protocol : 17
port : 500
length : 8
May 29 18:01:55.029: ISAKMP (1): Total payload length: 12
May 29 18:01:55.029: CryptoEngine0: generate hmac context for conn id 1
May 29 18:01:55.033: ISAKMP (1): sending packet to 209.165.201.5 (I) MM_KEY_EXCH
May 29 18:01:55.049: ISAKMP (1): received packet from 209.165.201.5 (I) MM_KEY_EXCH
May 29 18:01:55.053: ISAKMP (0:1): processing ID payload. message ID = 0
May 29 18:01:55.053: ISAKMP (0:1): processing HASH payload. message ID = 0
May 29 18:01:55.053: CryptoEngine0: generate hmac context for conn id 1
May 29 18:01:55.057: ISAKMP (0:1): SA has been authenticated with 209.165.201.5
!--- Phase 1 is completed and Phase 2 starts now.
May 29 18:01:55.057: ISAKMP (0:1): beginning Quick Mode exchange,
M-ID of -1809462101
May 29 18:01:55.061: CryptoEngine0: generate hmac context for conn id 1
May 29 18:01:55.065: ISAKMP (1): sending packet to 209.165.201.5 (I) QM_IDLE
May 29 18:01:55.065: CryptoEngine0: clear dh number for conn id 1
May 29 18:01:55.337: ISAKMP (1): received packet from 209.165.201.5 (I) QM_IDLE
May 29 18:01:55.341: CryptoEngine0: generate hmac context for conn id 1
May 29 18:01:55.345: ISAKMP (0:1): processing SA payload. message ID = -1809462101
May 29 18:01:55.345: ISAKMP (0:1): Checking IPSec proposal 1
May 29 18:01:55.345: ISAKMP: transform 1, ESP_DES
May 29 18:01:55.345: ISAKMP: attributes in transform:
May 29 18:01:55.345: ISAKMP: encaps is 1
May 29 18:01:55.345: ISAKMP: SA life type in seconds
May 29 18:01:55.345: ISAKMP: SA life duration (basic) of 3600
May 29 18:01:55.345: ISAKMP: SA life type in kilobytes
May 29 18:01:55.345: ISAKMP: SA life duration (VPI) of 0x0 0x46 0x50 0x0
May 29 18:01:55.349: ISAKMP: authenticator is HMAC-MD5
May 29 18:01:55.349: validate proposal 0
May 29 18:01:55.349: ISAKMP (0:1): atts are acceptable.
May 29 18:01:55.349: IPSEC(validate_proposal_request): proposal part #1,
!--- After negotiating the attributes, IKE asks IPSec to !--- validate the proposal.
(key eng. msg.) dest= 209.165.201.5, src= 209.165.201.6,
dest_proxy= 192.168.10.0/255.255.255.0/0/0 (type=4),
src_proxy= 10.48.66.0/255.255.254.0/0/0 (type=4),
protocol= ESP, transform= esp-des esp-md5-hmac ,
lifedur= 0s and 0kb,
spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x4
!--- spi is still zero because SAs have not been set.
May 29 18:01:55.353: validate proposal request 0
May 29 18:01:55.357: ISAKMP (0:1): processing NONCE payload.
message ID = -1809462101
May 29 18:01:55.357: ISAKMP (0:1): processing ID payload. message ID = -1809462101
May 29 18:01:55.357: ISAKMP (0:1): processing ID payload. message ID = -1809462101
May 29 18:01:55.357: CryptoEngine0: generate hmac context for conn id 1
May 29 18:01:55.361: ipsec allocate flow 0
May 29 18:01:55.361: ipsec allocate flow 0
May 29 18:01:55.369: ISAKMP (0:1): Creating IPSec SAs
May 29 18:01:55.369: inbound SA from 209.165.201.5 to 209.165.201.6
(proxy 192.168.10.0 to 10.48.66.0)
May 29 18:01:55.369: has spi 561973207 and conn_id 2000 and flags 4
May 29 18:01:55.373: lifetime of 3600 seconds
May 29 18:01:55.373: lifetime of 4608000 kilobytes
May 29 18:01:55.373: outbound SA from 209.165.201.6 to 209.165.201.5
(proxy 10.48.66.0 to 192.168.10.0)
May 29 18:01:55.373: has spi -910941209 and conn_id 2001 and flags 4
May 29 18:01:55.373: lifetime of 3600 seconds
May 29 18:01:55.373: lifetime of 4608000 kilobytes
May 29 18:01:55.377: ISAKMP (1): sending packet to 209.165.201.5 (I) QM_IDLE
May 29 18:01:55.377: ISAKMP (0:1): deleting node -1809462101 error FALSE reason ""
May 29 18:01:55.381: IPSEC(key_engine): got a queue event...
May 29 18:01:55.381: IPSEC(initialize_sas): ,
(key eng. msg.) dest= 209.165.201.6, src= 209.165.201.5,
dest_proxy= 10.48.66.0/255.255.254.0/0/0 (type=4),
src_proxy= 192.168.10.0/255.255.255.0/0/0 (type=4),
protocol= ESP, transform= esp-des esp-md5-hmac ,
lifedur= 3600s and 4608000kb,
spi= 0x217F07D7(561973207), conn_id= 2000, keysize= 0, flags= 0x4
!--- IPSec SAs are now initialized and encrypted !--- communication can now take place.
May 29 18:01:55.381: IPSEC(initialize_sas): ,
(key eng. msg.) src= 209.165.201.6, dest= 209.165.201.5,
src_proxy= 10.48.66.0/255.255.254.0/0/0 (type=4),
dest_proxy= 192.168.10.0/255.255.255.0/0/0 (type=4),
protocol= ESP, transform= esp-des esp-md5-hmac ,
lifedur= 3600s and 4608000kb,
spi= 0xC9B423E7(3384026087), conn_id= 2001, keysize= 0, flags= 0x4
!--- IPSec SAs are now initialized and encrypted !--- communication can now take place.
May 29 18:01:55.385: IPSEC(create_sa): sa created,
(sa) sa_dest= 209.165.201.6, sa_prot= 50,
sa_spi= 0x217F07D7(561973207),
sa_trans= esp-des esp-md5-hmac , sa_conn_id= 2000
May 29 18:01:55.385: IPSEC(create_sa): sa created,
(sa) sa_dest= 209.165.201.5, sa_prot= 50,
sa_spi= 0xC9B423E7(3384026087),
sa_trans= esp-des esp-md5-hmac , sa_conn_id= 2001
!--- Observe that two IPSec SAs are created. !--- Recollect that IPSec SAs are bidirectional.
brussels#
brussels#show crypto isakmp sa
dst src state conn-id slot
209.165.201.5 209.165.201.6 QM_IDLE 1 0
brussels#show crypto ipsec sa
interface: FastEthernet0/1
Crypto map tag: vpnmap, local addr. 209.165.201.6
local ident (addr/mask/prot/port): (10.48.66.0/255.255.254.0/0/0)
remote ident (addr/mask/prot/port): (192.168.10.0/255.255.255.0/0/0)
current_peer: 209.165.201.5
PERMIT, flags={origin_is_acl,}
#pkts encaps: 4, #pkts encrypt: 4, #pkts digest 4
#pkts decaps: 4, #pkts decrypt: 4, #pkts verify 4
#pkts compressed: 0, #pkts decompressed: 0
#pkts not compressed: 0, #pkts compr. failed: 0, #pkts decompress failed: 0
#send errors 1, #recv errors 0
local crypto endpt.: 209.165.201.6, remote crypto endpt.: 209.165.201.5
path mtu 1500, media mtu 1500
current outbound spi: C9B423E7
inbound esp sas:
spi: 0x217F07D7(561973207)
transform: esp-des esp-md5-hmac ,
in use settings ={Tunnel, }
slot: 0, conn id: 2000, flow_id: 1, crypto map: vpnmap
sa timing: remaining key lifetime (k/sec): (4607998/3560)
IV size: 8 bytes
replay detection support: Y
inbound ah sas:
inbound pcp sas:
outbound esp sas:
spi: 0xC9B423E7(3384026087)
transform: esp-des esp-md5-hmac ,
in use settings ={Tunnel, }
slot: 0, conn id: 2001, flow_id: 2, crypto map: vpnmap
sa timing: remaining key lifetime (k/sec): (4607999/3560)
IV size: 8 bytes
replay detection support: Y
outbound ah sas:
outbound pcp sas:
brussels#
Related Information
Revision History
| Revision | Publish Date | Comments |
|---|---|---|
1.0 |
14-Jan-2008 |
Initial Release |
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