How do I get the Crypto Engine working in the ASA 5505

Answered Question
Apr 3rd, 2008

I've purchased a brand new ASA 5505 to connect to the Cisco 3640 and I can't even bring up the tunnel. I have tried changing the transform-set to just DES but know luck. I have recently brought up a VPN using DMVPN and the Cisco 501 in a site-to-site but this one has been wondering what is going on.

The router (3640 running 12.4 code)looks ok and with the Cisco 501 working great I don't think I have an issue with the router.

This is a lab environment.

This is the feature set on the ASA 5505

Licensed features for this platform:

Maximum Physical Interfaces : 8

VLANs : 3, DMZ Restricted

Inside Hosts : 10

Failover : Disabled

VPN-DES : Enabled

VPN-3DES-AES : Enabled

VPN Peers : 10

WebVPN Peers : 2

Dual ISPs : Disabled

VLAN Trunk Ports : 0

AnyConnect for Mobile : Disabled

AnyConnect for Linksys phone : Disabled

Advanced Endpoint Assessment : Disabled

This platform has a Base license.

This is a ping from 10.3.4.10 to 10.1.1.1. It doesn't say anything about IPSEC or ISAKMP.

This is what I get when I do the: show crypto ipsec sa

ASA5505(config)# show crypto ipsec sa

There are no ipsec sas

ASA5505(config)# show crypto isakmp sa

There are no isakmp sas

debug crypto isakmp 10

packet input inside icmp 10.3.4.10 8 0 10.1.1.1 detail

I've been working on this for a week and don't really know if I have a bad ASA5505. Since normal stuff like browsing the Internet works and I can ping outside and inside I don't know what to think. See attachments.

I have this problem too.
0 votes
Correct Answer by husycisco about 8 years 8 months ago

"Doing what you asked worked"

Nice to hear that your issue is resolved.

"My question is can I use the ESP-3DES-SHA transform-set instead of the MD5?"

Sure you can.

Regards.

Please do not forget to rate helpful posts and check "Resolved my issue" box, if the post resolved your issue.

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husycisco Thu, 04/03/2008 - 10:15

Hi Bryan

Try reloading ASA

Are you talking about the Remote access or site-to-site VPN?

Regards

bryans1367 Thu, 04/03/2008 - 10:20

I'm working on a site to site VPN. The logs show the router is trying to talk to the ASA.

I have tried to set the defaults back to factory and nothing has changed. I can provide the router side if you think it would help.

LOGS:

4|Apr 03 2008|16:49:24|713903|||IP = 67.166.99.36, Error: Unable to remove PeerTblEntry

3|Apr 03 2008|16:49:24|713902|||IP = 67.166.99.36, Removing peer from peer table failed, no match!

4|Apr 03 2008|16:48:52|713903|||IP = 67.166.99.36, Information Exchange processing failed

5|Apr 03 2008|16:48:52|713904|||IP = 67.166.99.36, Received an un-encrypted NO_PROPOSAL_CHOSEN notify message, dropping

5|Apr 03 2008|16:48:52|713041|||IP = 67.166.99.36, IKE Initiator: New Phase 1, Intf inside, IKE Peer 67.166.99.36 local Proxy Address 10.3.4.0, remote Proxy Address 10.1.1.0, Crypto map (outside_map1)

4|Apr 03 2008|16:48:28|713903|||IP = 67.166.99.36, Error: Unable to remove PeerTblEntry

3|Apr 03 2008|16:48:28|713902|||IP = 67.166.99.36, Removing peer from peer table failed, no match

fortis123 Thu, 04/03/2008 - 11:58

Hi,

Do you have 'pfs' enabled on ASA..? From your upload..

crypto map outside_map1 1 set pfs

disable pfs (unless it is existing on other end also). check if it works.

thank you

MS

husycisco Fri, 04/04/2008 - 03:25

Bryan,

Can you send the config of router and current config of ASA please?

Most probably, transform-set is not set. You would get a PFS mismatch error if it was a PFS issue.

husycisco Fri, 04/04/2008 - 12:30

In 3640, do the following

no crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac

crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac

crypto map SDM_CMAP_1 2 ipsec-isakmp

no set transform-set ESP-3DES-SHA1

set transform-set ESP-3DES-MD5

no ip nat inside source route-map SDM_RMAP_3 interface Ethernet2/0 overload

no access-list 105 deny ip 10.1.1.0 0.0.0.255 10.3.3.0 0.0.0.255

no access-list 105 permit ip 10.1.2.0 0.0.0.255 any

no access-list 105 permit ip 10.1.1.0 0.0.0.255 any

no access-list 105 permit ip 10.1.1.0 0.0.0.255 10.3.4.0 0.0.0.255

no access-list 106 remark IPSec Rule

no access-list 106 deny ip 10.1.1.0 0.0.0.255 10.3.3.0 0.0.0.255

no access-list 106 permit ip 10.3.3.0 0.0.0.255 any

no access-list 106 permit icmp any any

access-list 105 deny ip 10.1.1.0 0.0.0.255 10.3.3.0 0.0.0.255

access-list 105 deny ip 10.1.1.0 0.0.0.255 10.3.4.0 0.0.0.255

access-list 105 permit ip 10.1.2.0 0.0.0.255 any

access-list 105 permit ip 10.1.1.0 0.0.0.255 any

access-list 105 permit ip 10.3.3.0 0.0.0.255 any

access-list 105 permit icmp any any

In ASA, do the following

no crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac

no crypto ipsec transform-set ESP-DES-SHA esp-des esp-sha-hmac

no crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac

no crypto ipsec transform-set ESP-DES-MD5 esp-des esp-md5-hmac

no crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac

no crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac

no crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac

no crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac

no crypto ipsec transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac

no crypto ipsec transform-set ESP-3DES-SHA_BES esp-3des esp-sha-hmac

no crypto ipsec fragmentation after-encryption inside

no crypto map outside_map1 1 set transform-set ESP-3DES-MD5 ESP-3DES-SHA_BES ESP-3DES-SHA

crypto map outside_map1 1 set transform-set ESP-3DES-MD5

Restart both devices, then let me know if all is right. If not, post the last configs of both again

bryans1367 Sat, 04/05/2008 - 08:53

Doing what you asked worked. My question is can I use the ESP-3DES-SHA transform-set instead of the MD5?

Correct Answer
husycisco Sat, 04/05/2008 - 10:17

"Doing what you asked worked"

Nice to hear that your issue is resolved.

"My question is can I use the ESP-3DES-SHA transform-set instead of the MD5?"

Sure you can.

Regards.

Please do not forget to rate helpful posts and check "Resolved my issue" box, if the post resolved your issue.

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