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VPN Client and 831

kiksen1
Level 1
Level 1

Dear All,

I am trying to terminate a vpn-client on my 831 router using digital certificates. Are there any examples for 831 and the vpn-client? I only can finde papers for the pix. After the client choose the attributes I get an error:

1:19:45: ISAKMP: encryption 3DES-CBC

01:19:45: ISAKMP: hash SHA

01:19:45: ISAKMP: default group 2

01:19:45: ISAKMP: auth RSA sig

01:19:45: ISAKMP: life type in seconds

01:19:45: ISAKMP: life duration (VPI) of 0x0 0x20 0xC4 0x9B

01:19:45: ISAKMP (0:2): atts are acceptable. Next payload is 3

01:19:46: ISAKMP (0:2): Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE

01:19:46: ISAKMP (0:2): Old State = IKE_R_MM1 New State = IKE_R_MM1

01:19:46: ISAKMP (0:2): sending packet to 12.0.0.5 my_port 500 peer_port 500 (R)

MM_SA_SETUP

01:19:46: ISAKMP (0:2): Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

01:19:46: ISAKMP (0:2): Old State = IKE_R_MM1 New State = IKE_R_MM2

01:19:46: ISAKMP (0:2): received packet from 12.0.0.5 dport 500 sport 500 (R) MM_SA_SETUP

01:19:46: ISAKMP (0:2): Input = IKE_MESG_FROM_PEER, IKE_MM_EXCH

01:19:46: ISAKMP (0:2): Old State = IKE_R_MM2 New State = IKE_R_MM3

01:19:46: ISAKMP (0:2): processing KE payload. message ID = 0

01:19:46: ISAKMP (0:2): processing NONCE payload. message ID = 0

01:19:46: ISAKMP (0:2): SKEYID state generated

01:19:46: ISAKMP (0:2): Input = IKE_MESG_INTERNAL, IKE_PROCESS_MAIN_MODE

01:19:46: ISAKMP (0:2): Old State = IKE_R_MM3 New State = IKE_R_MM3

01:19:46: ISAKMP (0:2): sending packet to 12.0.0.5 my_port 500 peer_port 500 (R)

MM_KEY_EXCH

01:19:46: ISAKMP (0:2): Input = IKE_MESG_INTERNAL, IKE_PROCESS_COMPLETE

01:19:46: ISAKMP (0:2): Old State = IKE_R_MM3 New State = IKE_R_MM4

01:19:46: ISAKMP (0:2): received packet from 12.0.0.5 dport 500 sport 500 (R) MM_KEY_EXCH

01:19:46: %HIFN79XX-3-CMD_ERR: Hifn 79XX command returned error: (0x10FF)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

01:19:46: IPSECcard: an error coming back 10FF

01:19:46: %CRYPTO-6-IKMP_CRYPT_FAILURE: IKE (connection id 2) unable to decrypt

packet

01:19:46: ISAKMP (0:2): incrementing error counter on sa: ce_decrypt failed

01:19:51: ISAKMP (0:2): received packet from 12.0.0.5 dport 500 sport 500 (R) MM_KEY_EXCH

01:19:51: %HIFN79XX-3-CMD_ERR: Hifn 79XX command returned error: (0x10FF)

01:19:51: IPSECcard: an error coming back 10FF

01:19:51: %CRYPTO-6-IKMP_CRYPT_FAILURE: IKE (connection id 2) unable to decrypt

packet

01:19:51: ISAKMP (0:2): incrementing error counter on sa: ce_decrypt failed

01:19:56: ISAKMP (0:2): received packet from 12.0.0.5 dport 500 sport 500 (R) MM_KEY_EXCH

01:19:56: %HIFN79XX-3-CMD_ERR: Hifn 79XX command returned error: (0x10FF)

01:19:56: IPSECcard: an error coming back 10FF

01:19:56: %CRYPTO-6-IKMP_CRYPT_FAILURE: IKE (connection id 2) unable to decrypt

packet

0

here is my config for the 831:

version 12.2

no service pad

service timestamps debug uptime

service timestamps log uptime

service password-encryption

!

hostname RouterA

!

!

no ip subnet-zero

ip domain name test.abc

ip name-server 192.168.1.20

!

ip audit notify log

ip audit po max-events 100

!

crypto ca trustpoint winCA

enrollment mode ra

enrollment url http://192.168.2.234:80/certsrv/mscep/mscep.dll

serial-number

crypto ca certificate chain winCA

certificate ca 6F4B59AA487E3DB346D2EAA82F2934DB nvram:ABCCA.cer

certificate 10191F6A00000000000A nvram:ABC.cer

certificate 10192E2000000000000B nvram:ABCCA#1.cer

!

crypto isakmp policy 10

encr 3des

group 2

crypto isakmp key geheim address 0.0.0.0 0.0.0.0

!

crypto isakmp client configuration group vpn

key geheim

dns 192.168.1.20

!

!

crypto ipsec transform-set SICHER esp-3des esp-md5-hmac

!

crypto dynamic-map cisco 1

set transform-set SICHER

!

!

crypto map dyn-map 20 ipsec-isakmp dynamic cisco

!

!

interface Ethernet0

ip address 12.0.0.1 255.0.0.0

no cdp enable

crypto map dyn-map

hold-queue 100 out

!

interface Ethernet1

ip address 192.168.1.33 255.255.255.0

no cdp enable

!

no ip classless

ip route 0.0.0.0 0.0.0.0 192.168.1.254

no ip http server

!

no cdp run

...

...

Thank you!

Christian

1 Reply 1

l.cabral
Level 1
Level 1

You have a problem with your IOS version. Support for Cisco VPN Client, need the feature "Easy VPN Server" on the router, and this feature appears from version 12.3(2) on 831 routers.

You have two alternatives:

1. Use another vpn client that only uses ipsec

2. Upgrade your router ios software to some of the following:

Basic:

IOS 12.3(2)T IP/FW 3DES --->Prod: S831CHK9-12302T

With more QoS features:

IOS 12.3(2)T IP/FW/PLUS 3DES --->Prod: S831CHPK9-12302T

Hope to help,

chabral