Configure el Easy VPN remoto PIX 501/506 a un router IOS en el modo de extensión de red con autenticación extendida

Opciones de descarga

PDF (208.3 KB)
Visualice con Adobe Reader en una variedad de dispositivos
ePub (108.5 KB)
Visualice en diferentes aplicaciones en iPhone, iPad, Android, Sony Reader o Windows Phone
Mobi (Kindle) (134.6 KB)
Visualice en dispositivo Kindle o aplicación Kindle en múltiples dispositivos

Actualizado:26 de septiembre de 2008

ID del documento:23783

Lenguaje no discriminatorio

El conjunto de documentos para este producto aspira al uso de un lenguaje no discriminatorio. A los fines de esta documentación, "no discriminatorio" se refiere al lenguaje que no implica discriminación por motivos de edad, discapacidad, género, identidad de raza, identidad étnica, orientación sexual, nivel socioeconómico e interseccionalidad. Puede haber excepciones en la documentación debido al lenguaje que se encuentra ya en las interfaces de usuario del software del producto, el lenguaje utilizado en función de la documentación de la RFP o el lenguaje utilizado por un producto de terceros al que se hace referencia. Obtenga más información sobre cómo Cisco utiliza el lenguaje inclusivo.

Acerca de esta traducción

Cisco ha traducido este documento combinando la traducción automática y los recursos humanos a fin de ofrecer a nuestros usuarios en todo el mundo contenido en su propio idioma. Tenga en cuenta que incluso la mejor traducción automática podría no ser tan precisa como la proporcionada por un traductor profesional. Cisco Systems, Inc. no asume ninguna responsabilidad por la precisión de estas traducciones y recomienda remitirse siempre al documento original escrito en inglés (insertar vínculo URL).

Contenido

Introducción

Prerequisites

Requirements

Componentes Utilizados

Convenciones

Configurar

Diagrama de la red

Configuraciones

Verificación

Comandos show de PIX y salida de ejemplo

Comandos show del IOS y ejemplo de resultado

Troubleshoot

Comandos de depuración PIX y salida de ejemplo

Comandos de depuración del IOS y ejemplo de resultado

Información Relacionada

Introducción

Este documento ilustra la configuración de IPSec entre la función de cliente de hardware de Easy VPN remoto de PIX y la función de servidor Easy VPN disponible en versiones posteriores de Cisco IOS® Software. La característica Easy VPN Remote para PIX se presentó en PIX versión 6.2 y también se considera cliente de hardware/cliente EzVPN. Cuando el Easy VPN Remote se conecta a un dispositivo de cabecera, existe un mínimo de cinco asociaciones de seguridad (SA), que incluyen una asociación de Intercambio de claves de Internet (IKE) y cuatro de IPSec. Cuando Easy VPN Remote se conecta a la cabecera, negocia siempre dos SA de IPSec con la dirección IP de la interfaz exterior del PIX a cualquier dirección que haya detrás del servidor VPN. Esto se puede utilizar con fines de administración para conectarse a la interfaz exterior del PIX desde la red que hay detrás del router de Cisco IOS (mediante Secure Shell [SSH], Secure HTTP for PIX Device Manager [PDM] o Telnet). El SA se crea de forma predeterminada sin ninguna configuración, y los otros dos SA se crean para el tráfico de datos entre las redes que hay detrás del PIX y el router de Cisco IOS.

Consulte PIX-to-PIX 6.x: Ejemplo de Configuración de Easy VPN (NEM) para obtener más información sobre un escenario similar en el que el PIX 506 6.x actúa como servidor Easy VPN.

Consulte Ejemplo de Configuración de PIX/ASA 7.x Easy VPN con ASA 5500 como Servidor y PIX 506E como Cliente (NEM) para obtener más información sobre un escenario similar donde PIX/ASA 7.x actúa como Servidor Easy VPN.

Consulte PIX/ASA 7.x Easy VPN con ASA 5500 como servidor y Cisco 871 como ejemplo de configuración de Easy VPN remoto para obtener más información sobre un escenario similar en el que el router Cisco 871 actúa como Easy VPN remoto.

Refiérase a Ejemplo de Configuración de VPN Hardware Client en un PIX 501/506 Series Security Appliance con VPN 3000 Concentrator para obtener más información sobre un escenario similar donde el Cisco VPN 3000 Concentrator actúa como el Easy VPN Server.

Prerequisites

Requirements

No hay requisitos específicos para este documento.

Componentes Utilizados

La información que contiene este documento se basa en las siguientes versiones de software y hardware.

Firewall PIX que ejecuta la versión de software 6.3(5)

Nota: La función Easy VPN Client en el PIX se introdujo en la versión 6.2.
Cisco 7200 Series IOS Router que ejecuta la versión de software 12.4(4)T1

Nota: La función Easy VPN Server se introdujo en la versión 12.2(8)T).

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Convenciones

Consulte Convenciones de Consejos TécnicosCisco para obtener más información sobre las convenciones del documento.

Configurar

En esta sección encontrará la información para configurar las funciones descritas en este documento.

Nota: Use la Command Lookup Tool (sólo clientes registrados) para obtener más información sobre los comandos utilizados en este documento.

Diagrama de la red

En este documento, se utiliza esta configuración de red:

Configuraciones

En este documento, se utilizan estas configuraciones:

Router del Cisco IOS
PIX

Router del Cisco IOS
ezvpn_server#show running-config Building configuration... Current configuration : 1894 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname ezvpn_server ! boot-start-marker boot system disk1:c7200-adventerprisek9-mz.124-4.T1.bin boot-end-marker ! ! !--- Enable the authentication, authorization, and accounting (AAA) !--- access control model. aaa new-model ! ! !--- Enable X-Auth for user authentication. aaa authentication login userauthen local !--- Enable group authorization. aaa authorization network groupauthor local ! aaa session-id common ! resource policy ! ip subnet-zero ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !--- For local authentication of the IPSec user, !--- create the user with password. username remoteuser1 password 0 remotepass username cisco password 0 cisco ! ! ! !--- Create an Internet Security Association and Key Management Protocol !--- (ISAKMP) policy for Phase 1 negotiations for the hardware client. crypto isakmp policy 10 hash md5 authentication pre-share group 2 ! !--- Create a group that will be used to specify the !--- Windows Internet Name Service (WINS) and Domain Name System (DNS) !--- servers' addresses to the hardware client for authentication. crypto isakmp client configuration group hwclient key test123 dns 172.22.1.101 wins 172.22.1.102 domain cisco.com pool ippool ! ! !--- Create the Phase 2 Policy for actual data encryption. crypto ipsec transform-set myset esp-des esp-md5-hmac ! !--- Create a dynamic map and apply the transform set that was created above. crypto dynamic-map dynmap 10 set transform-set myset ! ! !--- Create the actual crypto map, and apply !--- the aaa lists that were created earlier. crypto map clientmap client authentication list userauthen crypto map clientmap isakmp authorization list groupauthor crypto map clientmap client configuration address respond crypto map clientmap 10 ipsec-isakmp dynamic dynmap ! ! ! ! ! interface FastEthernet0/0 ip address 10.10.10.2 255.255.255.0 duplex half !--- Apply the crypto map on the outside interface. crypto map clientmap ! interface ATM2/0 no ip address shutdown no atm ilmi-keepalive ! interface FastEthernet4/0 no ip address shutdown duplex half ! interface Ethernet5/0 ip address 172.22.1.1 255.255.255.0 duplex half ! interface Ethernet5/1 no ip address shutdown duplex half ! interface Ethernet5/2 no ip address shutdown duplex half ! interface Ethernet5/3 no ip address shutdown duplex half ! !--- Create a pool of addresses to be assigned to the VPN Clients. ip local pool ippool 172.22.1.50 172.22.1.70 ip classless no ip http server no ip http secure-server ! ! ! logging alarm informational ! ! ! ! control-plane ! ! ! ! ! ! gatekeeper shutdown ! ! line con 0 stopbits 1 line aux 0 stopbits 1 line vty 0 4 ! ! end ezvpn_server#

Router del Cisco IOS

ezvpn_server#show running-config
Building configuration...

Current configuration : 1894 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname ezvpn_server
!
boot-start-marker
boot system disk1:c7200-adventerprisek9-mz.124-4.T1.bin
boot-end-marker
!
!

!--- Enable the authentication, authorization, and accounting (AAA) !--- access control model.

aaa new-model
!
!

!--- Enable X-Auth for user authentication.

aaa authentication login userauthen local

!--- Enable group authorization.

aaa authorization network groupauthor local
!
aaa session-id common
!
resource policy
!
ip subnet-zero
ip cef
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!

!--- For local authentication of the IPSec user, !--- create the user with password.

username remoteuser1 password 0 remotepass
username cisco password 0 cisco
!
!
!

!--- Create an Internet Security Association and Key Management Protocol !--- (ISAKMP) policy for Phase 1 negotiations for the hardware client.

crypto isakmp policy 10
 hash md5
 authentication pre-share
 group 2
!

!--- Create a group that will be used to specify the !--- Windows Internet Name Service (WINS) and Domain Name System (DNS) !--- servers' addresses to the hardware client for authentication.

crypto isakmp client configuration group hwclient
 key test123
 dns 172.22.1.101
 wins 172.22.1.102
 domain cisco.com
 pool ippool
!
!

!--- Create the Phase 2 Policy for actual data encryption.

crypto ipsec transform-set myset esp-des esp-md5-hmac
!

!--- Create a dynamic map and apply the transform set that was created above.

crypto dynamic-map dynmap 10
 set transform-set myset
!
!

!--- Create the actual crypto map, and apply !--- the aaa lists that were created earlier.

crypto map clientmap client authentication list userauthen
crypto map clientmap isakmp authorization list groupauthor
crypto map clientmap client configuration address respond
crypto map clientmap 10 ipsec-isakmp dynamic dynmap
!
!
!
!
!
interface FastEthernet0/0
 ip address 10.10.10.2 255.255.255.0
 duplex half

!--- Apply the crypto map on the outside interface.

 crypto map clientmap
!
interface ATM2/0
 no ip address
 shutdown
 no atm ilmi-keepalive
!
interface FastEthernet4/0
 no ip address
 shutdown
 duplex half
!
interface Ethernet5/0
 ip address 172.22.1.1 255.255.255.0
 duplex half
!
interface Ethernet5/1
 no ip address
 shutdown
 duplex half
!
interface Ethernet5/2
 no ip address
 shutdown
 duplex half
!
interface Ethernet5/3
 no ip address
 shutdown
 duplex half
!

!--- Create a pool of addresses to be assigned to the VPN Clients.

ip local pool ippool 172.22.1.50 172.22.1.70
ip classless
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
!
!
!
!
control-plane
!
!
!
!
!
!
gatekeeper
 shutdown
!
!
line con 0
 stopbits 1
line aux 0
 stopbits 1
line vty 0 4
!
!
end


ezvpn_server#

PIX
pix506#show running-config : Saved : PIX Version 6.3(5) !--- Specify speed and duplex settings. interface ethernet0 auto interface ethernet1 auto nameif ethernet0 outside security0 nameif ethernet1 inside security100 enable password WwXYvtKrnjXqGbu1 encrypted passwd 2KFQnbNIdI.2KYOU encrypted hostname pix506 domain-name cisco.com fixup protocol dns maximum-length 512 fixup protocol ftp 21 fixup protocol h323 h225 1720 fixup protocol h323 ras 1718-1719 fixup protocol http 80 fixup protocol rsh 514 fixup protocol rtsp 554 fixup protocol sip 5060 fixup protocol sip udp 5060 fixup protocol skinny 2000 fixup protocol smtp 25 fixup protocol sqlnet 1521 fixup protocol tftp 69 names pager lines 24 mtu outside 1500 mtu inside 1500 !--- Define IP addresses for the PIX's inside and outside interfaces. ip address outside 10.10.10.1 255.255.255.0 ip address inside 172.16.1.1 255.255.255.0 ip audit info action alarm ip audit attack action alarm pdm history enable arp timeout 14400 !--- Define the outside router as the default gateway. !--- Typically this is the IP address of your ISP's router. route outside 0.0.0.0 0.0.0.0 10.10.10.2 1 timeout xlate 3:00:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00 timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00 timeout sip-disconnect 0:02:00 sip-invite 0:03:00 timeout uauth 0:05:00 absolute aaa-server TACACS+ protocol tacacs+ aaa-server TACACS+ max-failed-attempts 3 aaa-server TACACS+ deadtime 10 aaa-server RADIUS protocol radius aaa-server RADIUS max-failed-attempts 3 aaa-server RADIUS deadtime 10 aaa-server LOCAL protocol local no snmp-server location no snmp-server contact snmp-server community public no snmp-server enable traps floodguard enable telnet timeout 5 ssh timeout 5 console timeout 0 !--- Define the VPN peer IP address. vpnclient server 10.10.10.2 !--- Specify whether Client/PAT (Port Address Translation) mode !--- is to be used or whether Network Extension Mode (NEM) is to be used. vpnclient mode network-extension-mode !--- Define Easy VPN Remote parameters. !--- This is the pre-shared key used in IKE negotiation. vpnclient vpngroup hwclient password ******** !--- This is the extended authentication username and password. vpnclient username cisco password ******** !---This enables vpnclient on the PIX. vpnclient enable terminal width 80 Cryptochecksum:fdbd365f0b4cdc6707a50efeeeb8ed44 : end

PIX

pix506#show running-config
: Saved
:
PIX Version 6.3(5)


!--- Specify speed and duplex settings.

interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password WwXYvtKrnjXqGbu1 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname pix506
domain-name cisco.com
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
pager lines 24
mtu outside 1500
mtu inside 1500


!--- Define IP addresses for the PIX's inside and outside interfaces.

ip address outside 10.10.10.1 255.255.255.0
ip address inside 172.16.1.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm history enable
arp timeout 14400


!--- Define the outside router as the default gateway. !--- Typically this is the IP address of your ISP's router.

route outside 0.0.0.0 0.0.0.0 10.10.10.2 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout sip-disconnect 0:02:00 sip-invite 0:03:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server TACACS+ max-failed-attempts 3
aaa-server TACACS+ deadtime 10
aaa-server RADIUS protocol radius
aaa-server RADIUS max-failed-attempts 3
aaa-server RADIUS deadtime 10
aaa-server LOCAL protocol local
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet timeout 5
ssh timeout 5
console timeout 0


!--- Define the VPN peer IP address.

vpnclient server 10.10.10.2


!--- Specify whether Client/PAT (Port Address Translation) mode !--- is to be used or whether Network Extension Mode (NEM) is to be used.

vpnclient mode network-extension-mode


!--- Define Easy VPN Remote parameters. !--- This is the pre-shared key used in IKE negotiation.


vpnclient vpngroup hwclient password ********


!--- This is the extended authentication username and password.

vpnclient username cisco password ********


!---This enables vpnclient on the PIX.

vpnclient enable
terminal width 80
Cryptochecksum:fdbd365f0b4cdc6707a50efeeeb8ed44
: end

Verificación

Comandos show de PIX y salida de ejemplo

Use esta sección para confirmar que su configuración funciona correctamente.

La herramienta Output Interpreter Tool (clientes registrados solamente) (OIT) soporta ciertos comandos show. Utilice la OIT para ver un análisis del resultado del comando show.

comando vpnclient enable—Permite una conexión remota a Easy VPN. En NEM el túnel está activo aun cuando no existe tráfico interesante para ser intercambiado con el servidor de cabecera Easy VPN.
```
pix506(config)#vpnclient enable
```

show crypto isakmp policy—Muestra los parámetros para cada política IKE.

pix506(config)#show crypto isakmp policy 

Default protection suite 
        encryption algorithm:  DES - Data Encryption Standard (56 bit keys). 
        hash algorithm:        Secure Hash Standard 
        authentication method: Rivest-Shamir-Adleman Signature 
        Diffie-Hellman group:  #1 (768 bit) 
        lifetime:              86400 seconds, no volume limit

Este ejemplo muestra el resultado del comando show crypto isakmp policy después de habilitar el cliente de hardware.

pix506(config)#show crypto isakmp policy 

Protection suite of priority 65001
       encryption algorithm: DES - Data Encryption Standard (56 bit keys).
       hash algorithm: Message Digest 5
       authentication method: Pre-Shared Key with XAUTH
       Diffie-Hellman group: #2 (1024 bit)
       lifetime: 86400 seconds, no volume limit
Protection suite of priority 65002
       encryption algorithm: DES - Data Encryption Standard (56 bit keys).
       hash algorithm: Message Digest 5
       authentication method: Pre-Shared Key
       Diffie-Hellman group: #2 (1024 bit)
       lifetime: 86400 seconds, no volume limit

show crypto ipsec transform—Muestra las transformaciones IPSec actuales.
```
pix506(config)#show crypto ipsec transform
```
Este ejemplo muestra el resultado del comando show crypto ipsec transform después de habilitar el cliente de hardware. Antes de que se utilice el comando vpnclient enable, sólo había un conjunto de protección predeterminado para ISAKMP. Luego de ejecutar el comando, Easy VPN Remote crea automáticamente cuatro propuestas además del conjunto de protección predeterminada. Además, no hay ninguna transformación IPSec establecida antes de que se utilice el comando enable. El conjunto de transformaciones se crea de manera dinámica luego de la ejecución del comando.
```
pix506(config)#show crypto ipsec transform-set

Transform set _vpnc_tset_9: { esp-des esp-md5-hmac } 
will negotiate = { Tunnel, }, 

Transform set _vpnc_tset_10: { esp-null esp-md5-hmac } 
will negotiate = { Tunnel, }, 

Transform set _vpnc_tset_11: { esp-null esp-sha-hmac } 
will negotiate = { Tunnel, },
```

show crypto isakmp sa — Muestra todas las asociaciones actuales de seguridad (SA) IKE de un par.

pix506(config)#show crypto isakmp sa
Total     : 1
Embryonic : 0
        dst               src        state     pending     created
      10.10.10.2       10.10.10.1    QM_IDLE         0           2

show vpnclient—Muestra información de configuración de VPN Client o dispositivo Easy VPN Remote.

pix506(config)#show vpnclient

LOCAL CONFIGURATION
vpnclient server 10.10.10.2
vpnclient mode network-extension-mode
vpnclient vpngroup hwclient password ********
vpnclient username cisco password ********
vpnclient enable

DOWNLOADED DYNAMIC POLICY
Current Server                     : 10.10.10.2
Primary DNS                        : 172.22.1.101
Primary WINS                       : 172.22.1.102
Default Domain                     : cisco.com
PFS Enabled                        : No
Secure Unit Authentication Enabled : No
User Authentication Enabled        : No
Backup Servers                     : Deleted by order of the headend

show crypto ipsec sa — Muestra los IPSec SA construidos entre pares.

pix506(config)#show crypto ipsec sa 
interface: outside
    Crypto map tag: _vpnc_cm, local addr. 10.10.10.1

   local  ident (addr/mask/prot/port): (10.10.10.1/255.255.255.255/0/0)
   remote ident (addr/mask/prot/port): (0.0.0.0/0.0.0.0/0/0)
   current_peer: 10.10.10.2:500
     PERMIT, flags={origin_is_acl,}
    #pkts encaps: 3, #pkts encrypt: 3, #pkts digest 3
    #pkts decaps: 3, #pkts decrypt: 3, #pkts verify 3
    #pkts compressed: 0, #pkts decompressed: 0
    #pkts not compressed: 0, #pkts compr. failed: 0,
    #pkts decompress failed: 0
    #send errors 0, #recv errors 0

!--- As shown here, ping packets were successfully exchanged !--- between the Easy VPN Remote (PIX) and the Easy VPN Server (IOS).

local crypto endpt.: 10.10.10.1, remote crypto endpt.: 10.10.10.2
     path mtu 1500, ipsec overhead 56, media mtu 1500
     current outbound spi: 533f74a9

     inbound esp sas:
      spi: 0xad0984cc(2903082188)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        slot: 0, conn id: 4, crypto map: _vpnc_cm
        sa timing: remaining key lifetime (k/sec): (4607999/3001)
        IV size: 8 bytes
        replay detection support: Y


     inbound ah sas:


     inbound pcp sas:


     outbound esp sas:
      spi: 0x533f74a9(1396667561)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        slot: 0, conn id: 3, crypto map: _vpnc_cm
        sa timing: remaining key lifetime (k/sec): (4607999/3001)
        IV size: 8 bytes
        replay detection support: Y


     outbound ah sas:


     outbound pcp sas:



   local  ident (addr/mask/prot/port): (172.16.1.0/255.255.255.0/0/0)
   remote ident (addr/mask/prot/port): (0.0.0.0/0.0.0.0/0/0)
   current_peer: 10.10.10.2:500
     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 decompress failed: 0
    #send errors 0, #recv errors 0


!--- As shown here, ping packets were successfully exchanged !--- between hosts behind the Easy VPN Remote (PIX) and the Easy !--- VPN Server (IOS).

     local crypto endpt.: 10.10.10.1, remote crypto endpt.: 10.10.10.2
     path mtu 1500, ipsec overhead 56, media mtu 1500
     current outbound spi: 2eca448b

     inbound esp sas:
      spi: 0xc82c0695(3358328469)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        slot: 0, conn id: 2, crypto map: _vpnc_cm
        sa timing: remaining key lifetime (k/sec): (4607999/2997)
        IV size: 8 bytes
        replay detection support: Y


     inbound ah sas:


     inbound pcp sas:


     outbound esp sas:
      spi: 0x2eca448b(785007755)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        slot: 0, conn id: 1, crypto map: _vpnc_cm
        sa timing: remaining key lifetime (k/sec): (4607999/2988)
        IV size: 8 bytes
        replay detection support: Y


     outbound ah sas:


     outbound pcp sas:

show access-list—muestra el contenido de las listas de acceso.

access-list cached ACL log flows: total 0, denied 0 (deny-flow-max 1024)
            alert-interval 300
access-list _vpnc_acl; 2 elements
access-list _vpnc_acl line 1 permit ip 172.16.1.0 255.255.255.0
 any (hitcnt=18)
access-list _vpnc_acl line 2 permit ip host 10.10.10.1
 any (hitcnt=6) 

!--- The above output shows the dynamically built access lists to identify !--- interesting traffic for encryption.

Comandos show del IOS y ejemplo de resultado

show crypto isakmp sa — Muestra todas las asociaciones actuales de seguridad (SA) IKE de un par.

ezvpn_server#show crypto isakmp sa 
IPv4 Crypto ISAKMP SA
dst             src             state          conn-id slot status
10.10.10.2      10.10.10.1      QM_IDLE           1026    0 ACTIVE

show crypto ipsec sa — Muestra los IPSec SA construidos entre pares.

ezvpn_server#show crypto ipsec sa


!--- As shown above, ping packets were successfully exchanged !--- between the Easy VPN Remote (PIX) and the Easy VPN Server (IOS) !--- as well as hosts behind them.


interface: FastEthernet0/0
    Crypto map tag: clientmap, local addr 10.10.10.2

   protected vrf: (none)
   local  ident (addr/mask/prot/port): (0.0.0.0/0.0.0.0/0/0)
   remote ident (addr/mask/prot/port): (10.10.10.1/255.255.255.255/0/0)
   current_peer 10.10.10.1 port 500
     PERMIT, flags={}
    #pkts encaps: 3, #pkts encrypt: 3, #pkts digest: 3
    #pkts decaps: 3, #pkts decrypt: 3, #pkts verify: 3
    #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.: 10.10.10.2, remote crypto endpt.: 10.10.10.1
     path mtu 1500, ip mtu 1500
     current outbound spi: 0xAD0984CC(2903082188)

     inbound esp sas:
      spi: 0x533F74A9(1396667561)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        conn id: 21, flow_id: SW:21, crypto map: clientmap
        sa timing: remaining key lifetime (k/sec): (4470133/2836)
        IV size: 8 bytes
        replay detection support: Y
        Status: ACTIVE

     inbound ah sas:

     inbound pcp sas:

     outbound esp sas:
      spi: 0xAD0984CC(2903082188)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        conn id: 22, flow_id: SW:22, crypto map: clientmap
        sa timing: remaining key lifetime (k/sec): (4470133/2834)
        IV size: 8 bytes
        replay detection support: Y
        Status: ACTIVE

     outbound ah sas:

     outbound pcp sas:

   protected vrf: (none)
   local  ident (addr/mask/prot/port): (0.0.0.0/0.0.0.0/0/0)
   remote ident (addr/mask/prot/port): (172.16.1.0/255.255.255.0/0/0)
   current_peer 10.10.10.1 port 500
     PERMIT, flags={}
    #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 0, #recv errors 0

     local crypto endpt.: 10.10.10.2, remote crypto endpt.: 10.10.10.1
     path mtu 1500, ip mtu 1500
     current outbound spi: 0xC82C0695(3358328469)

     inbound esp sas:
      spi: 0x2ECA448B(785007755)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        conn id: 23, flow_id: SW:23, crypto map: clientmap
        sa timing: remaining key lifetime (k/sec): (4589382/2832)
        IV size: 8 bytes
        replay detection support: Y
        Status: ACTIVE

     inbound ah sas:

     inbound pcp sas:

     outbound esp sas:
      spi: 0xC82C0695(3358328469)
        transform: esp-des esp-md5-hmac ,
        in use settings ={Tunnel, }
        conn id: 24, flow_id: SW:24, crypto map: clientmap
        sa timing: remaining key lifetime (k/sec): (4589382/2830)
        IV size: 8 bytes
        replay detection support: Y
        Status: ACTIVE

     outbound ah sas:

     outbound pcp sas:

Troubleshoot

Use esta sección para resolver problemas de configuración.

Si ha configurado el Remoto VPN Easy (PIX) y el Servidor VPN Easy (IOS) como se describe en este documento y todavía tiene problemas, recopile el resultado de la depuración del PIX y del IOS y el resultado del comando show para que el Centro de asistencia técnica de Cisco (TAC) lo analice. Consulte también Solución de problemas de PIX para pasar el tráfico de datos en un túnel IPSec establecido o Solución de problemas de seguridad IP – Información y uso de los comandos de depuración. Habilitar depuración de IPSec en el PIX.

Comandos de depuración PIX y salida de ejemplo

Comandos de depuración PIX

Nota: Consulte Información Importante sobre Comandos Debug antes de utilizar los comandos debug.

debug crypto ipsec — Muestra los IPSec Negotiations de la Fase 2.
debug crypto isakmp — Muestra las negociaciones ISAKMP para la fase 1.

Salida de muestra de PIX

ISAKMP (0): ID payload
next-payload : 13
type         : 11
protocol     : 17
port         : 0
length       : 12pix506(config)# 
ISAKMP (0): Total payload length: 16
ISAKMP (0:0): sending NAT-T vendor ID - rev 2 & 3
ISAKMP (0): beginning Aggressive Mode exchange
crypto_isakmp_process_block:src:10.10.10.2, dest:10.10.10.1 spt:500 dpt:500
OAK_AG exchange
ISAKMP (0): processing SA payload. message ID = 0


!--- The PIX checks the received proposal against !--- its dynamically generated policies looking for a match. 


ISAKMP (0): Checking ISAKMP transform 1 against priority 65001 policy
ISAKMP:      encryption DES-CBC
ISAKMP:      hash MD5
ISAKMP:      default group 2
ISAKMP:      extended auth pre-share (init)
ISAKMP:      life type in seconds
ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
ISAKMP (0): atts are not acceptable. Next payload is 0
ISAKMP (0): Checking ISAKMP transform 1 against priority 65002 policy
ISAKMP:      encryption DES-CBC
ISAKMP:      hash MD5
ISAKMP:      default group 2
ISAKMP:      extended auth pre-share (init)
ISAKMP:      life type in seconds
ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
ISAKMP (0): atts are not acceptable. Next payload is 0
ISAKMP (0): Checking ISAKMP transform 1 against priority 65003 policy
ISAKMP:      encryption DES-CBC
ISAKMP:      hash MD5
ISAKMP:      default group 2
ISAKMP:      extended auth pre-share (init)
ISAKMP:      life type in seconds
ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
ISAKMP (0): atts are not acceptable. Next payload is 0
ISAKMP (0): Checking ISAKMP transform 1 against priority 65004 policy
ISAKMP:      encryption DES-CBC
ISAKMP:      hash MD5
ISAKMP:      default group 2
ISAKMP:      extended auth pre-share (init)
ISAKMP:      life type in seconds
ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
ISAKMP (0): atts are not acceptable. Next payload is 0
ISAKMP (0): Checking ISAKMP transform 1 against priority 65005 policy
ISAKMP:      encryption DES-CBC
ISAKMP:      hash MD5
ISAKMP:      default group 2
ISAKMP:      extended auth pre-share (init)
ISAKMP:      life type in seconds
ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
ISAKMP (0): atts are not acceptable. Next payload is 0
ISAKMP (0): Checking ISAKMP transform 1 against priority 65006 policy
ISAKMP:      encryption DES-CBC
ISAKMP:      hash MD5
ISAKMP:      default group 2
ISAKMP:      extended auth pre-share (init)
ISAKMP:      life type in seconds
ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
ISAKMP (0): atts are not acceptable. Next payload is 0
ISAKMP (0): Checking ISAKMP transform 1 against priority 65007 policy
ISAKMP:      encryption DES-CBC
ISAKMP:      hash MD5
ISAKMP:      default group 2
ISAKMP:      extended auth pre-share (init)
ISAKMP:      life type in seconds
ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
ISAKMP (0): atts are not acceptable. Next payload is 0
ISAKMP (0): Checking ISAKMP transform 1 against priority 65008 policy
ISAKMP:      encryption DES-CBC
ISAKMP:      hash MD5
ISAKMP:      default group 2
ISAKMP:      extended auth pre-share (init)
ISAKMP:      life type in seconds
ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
ISAKMP (0): atts are not acceptable. Next payload is 0
ISAKMP (0): Checking ISAKMP transform 1 against priority 65009 policy
ISAKMP:      encryption DES-CBC
ISAKMP:      hash MD5
ISAKMP:      default group 2
ISAKMP:      extended auth pre-share (init)
ISAKMP:      life type in seconds
ISAKMP:      life duration (VPI) of  0x0 0x1 0x51 0x80 
ISAKMP (0): atts are acceptable. Next payload is 0
ISAKMP (0): processing vendor id payload

ISAKMP (0): processing vendor id payload

ISAKMP (0): remote peer supports dead peer detection

ISAKMP (0): processing vendor id payload

crypto_isakmp_process_block:src:10.10.10.2, dest:10.10.10.1 spt:500 dpt:500
crypto_isakmp_process_block:src:10.10.10.2, dest:10.10.10.1 spt:500 dpt:500
ISAKMP : attributes being requested

crypto_isakmp_process_block:src:10.10.10.2, dest:10.10.10.1 spt:500 dpt:500
ISAKMP (0): beginning Quick Mode exchange, M-ID of -582033986:dd4eddbeIPSEC
(key_engine): got a queue event...
IPSEC(spi_response): getting spi 0x61cf8d08(1640992008) for SA 
from      10.10.10.2 to      10.10.10.1 for prot 3

crypto_isakmp_process_block:src:10.10.10.2, dest:10.10.10.1 spt:500 dpt:500
OAK_QM exchange
oakley_process_quick_mode:
OAK_QM_IDLE
ISAKMP (0): processing SA payload. message ID = 3712933310

ISAKMP : Checking IPSec proposal 1

ISAKMP: transform 1, ESP_DES
ISAKMP:   attributes in transform:
ISAKMP:      encaps is 1
ISAKMP:      SA life type in seconds
ISAKMP:      SA life duration (basic) of 28800
ISAKMP:      SA life type in kilobytes
ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0 
ISAKMP:      authenticator is HMAC-MD5
ISAKMP (0): atts are acceptable.IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) dest= 10.10.10.2, src= 10.10.10.1, 
    dest_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4), 
    src_proxy= 10.10.10.1/255.255.255.255/0/0 (type=1),
    protocol= ESP, transform= esp-des esp-md5-hmac , 
    lifedur= 0s and 0kb, 
    spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x4

ISAKMP (0): processing NONCE payload. message ID = 3712933310

ISAKMP (0): processing ID payload. message ID = 3712933310
ISAKMP (0): processing ID payload. message ID = 3712933310
ISAKMP (0): processing NOTIFY payload 24576 protocol 3
spi 1327036890, message ID = 3712933310
ISAKMP (0): processing responder lifetime
ISAKMP (0): responder lifetime of 3600s
ISAKMP (0): Creating IPSec SAs
        inbound SA from   10.10.10.2 to   10.10.10.1 (proxy 0.0.0.0 to 10.10.10.1)
        has spi 1640992008 and conn_id 1 and flags 4
        lifetime of 3600 seconds
        lifetime of 4608000 kilobytes
        outbound SA from  10.10.10.1 to   10.10.10.2 (proxy 10.10.10.1 to 0.0.0.0)
        has spi 1327036890 and conn_id 2 and flags 4
        lifetime of 3600 seconds
        lifetime of 4608000 kilobytesIPSEC(key_engine): got a queue event...
IPSEC(initialize_sas): ,
  (key eng. msg.) dest= 10.10.10.1, src= 10.10.10.2, 
    dest_proxy= 10.10.10.1/255.255.255.255/0/0 (type=1), 
    src_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac , 
    lifedur= 3600s and 4608000kb, 
    spi= 0x61cf8d08(1640992008), conn_id= 1, keysize= 0, flags= 0x4
IPSEC(initialize_sas): ,
  (key eng. msg.) src= 10.10.10.1, dest= 10.10.10.2, 
    src_proxy= 10.10.10.1/255.255.255.255/0/0 (type=1), 
    dest_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac , 
    lifedur= 3600s and 4608000kb, 
    spi= 0x4f18f9da(1327036890), conn_id= 2, keysize= 0, flags= 0x4


!--- The IPSec SAs shown above are for management purposes.


VPN Peer: IPSEC: Peer ip:10.10.10.2/500 Ref cnt incremented to:2 Total VPN Peers:1
VPN Peer: IPSEC: Peer ip:10.10.10.2/500 Ref cnt incremented to:3 Total VPN Peers:1
return status is IKMP_NO_ERROR
ISAKMP (0): beginning Quick Mode exchange, M-ID of -419501328:e6feeaf0IPSEC
(key_engine): got a queue event...
IPSEC(spi_response): getting spi 0xf3d52246(4090831430) for SA 
from      10.10.10.2 to      10.10.10.1 for prot 3

crypto_isakmp_process_block:src:10.10.10.2, dest:10.10.10.1 spt:500 dpt:500
OAK_QM exchange
oakley_process_quick_mode:
OAK_QM_IDLE
ISAKMP (0): processing SA payload. message ID = 3875465968

ISAKMP : Checking IPSec proposal 1

ISAKMP: transform 1, ESP_DES
ISAKMP:   attributes in transform:
ISAKMP:      encaps is 1
ISAKMP:      SA life type in seconds
ISAKMP:      SA life duration (basic) of 28800
ISAKMP:      SA life type in kilobytes
ISAKMP:      SA life duration (VPI) of  0x0 0x46 0x50 0x0 
ISAKMP:      authenticator is HMAC-MD5
ISAKMP (0): atts are acceptable.IPSEC(validate_proposal_request): proposal part #1,
  (key eng. msg.) dest= 10.10.10.2, src= 10.10.10.1, 
    dest_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4), 
    src_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac , 
    lifedur= 0s and 0kb, 
    spi= 0x0(0), conn_id= 0, keysize= 0, flags= 0x4

ISAKMP (0): processing NONCE payload. message ID = 3875465968

ISAKMP (0): processing ID payload. message ID = 3875465968
ISAKMP (0): processing ID payload. message ID = 3875465968
ISAKMP (0): processing NOTIFY payload 24576 protocol 3
spi 465396864, message ID = 3875465968
ISAKMP (0): processing responder lifetime
ISAKMP (0): responder lifetime of 3600s
ISAKMP (0): Creating IPSec SAs
        inbound SA from   10.10.10.2 to 10.10.10.1 (proxy 0.0.0.0 to 172.16.1.0)
        has spi 4090831430 and conn_id 3 and flags 4
        lifetime of 3600 seconds
        lifetime of 4608000 kilobytes
        outbound SA from  10.10.10.1 to 10.10.10.2 (proxy 172.16.1.0 to 0.0.0.0)
        has spi 465396864 and conn_id 4 and flags 4
        lifetime of 3600 seconds
        lifetime of 4608000 kilobytesIPSEC(key_engine): got a queue event...
IPSEC(initialize_sas): ,
  (key eng. msg.) dest= 10.10.10.1, src= 10.10.10.2, 
    dest_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4), 
    src_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac , 
    lifedur= 3600s and 4608000kb, 
    spi= 0xf3d52246(4090831430), conn_id= 3, keysize= 0, flags= 0x4
IPSEC(initialize_sas): ,
  (key eng. msg.) src= 10.10.10.1, dest= 10.10.10.2, 
    src_proxy= 172.16.1.0/255.255.255.0/0/0 (type=4), 
    dest_proxy= 0.0.0.0/0.0.0.0/0/0 (type=4),
    protocol= ESP, transform= esp-des esp-md5-hmac , 
    lifedur= 3600s and 4608000kb, 
    spi= 0x1bbd6480(465396864), conn_id= 4, keysize= 0, flags= 0x4


!--- The IPSec SAs shown above are for actual data traffic.


VPN Peer: IPSEC: Peer ip:10.10.10.2/500 Ref cnt incremented to:4 Total VPN Peers:1
VPN Peer: IPSEC: Peer ip:10.10.10.2/500 Ref cnt incremented to:5 Total VPN Peers:1

Comandos de depuración del IOS y ejemplo de resultado

Comandos de depuración IOS