Client VPN through ASA

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Aug 22nd, 2007
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HI,


Does anyone know whats going on here? One of the clients on the network launches a cisco vpn client to an external resource and the client connects and is authenticated but no traffic passes.


PAT is in use on the outside interface.

I have enabled nat traversal and sysopt connection permit-ipsec.


Thanks

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mattiaseriksson Wed, 08/22/2007 - 07:06
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Hi, it is not you but the owner of the remote vpn server that has to enable nat traversal as it is part of the IKE negotiation between the IPSec peers.


Regards,


/Mattias

kinskins01 Wed, 08/22/2007 - 07:38
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HI thanks for the response.


I have recently replaced a Sonicwall with an ASA and the connection worked fine through the Sonicwall.


Any ideas?

mattiaseriksson Wed, 08/22/2007 - 07:50
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If you only have one client on your LAN you can use IPSec passthrough which is not enabled by default.


In ASA I think the command is inspect ipsec-pass-thru.


A sonicwall has probably all features enabled by default, wouldn't suprise me.



kinskins01 Thu, 08/23/2007 - 00:46
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HI,


When the vpn was established from the client I got the following warnings on the ASA:


regular translation creation failed for protocol 50 src inside:192.X.X.X. dst outside:159.X.X.X


Its related to PAT so I went and put in a static entry for the client so it nats out to its own Public IP and hey presto it worked.


Thanks for your help

anandramapathy Thu, 08/23/2007 - 05:12
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Right -

This is usually set on the Remote server end.


The option - IKE over TCP & Port number is available in the client. there is a UDP option also for this.


The default port for cisco is 10000.



you can find this by inititing a session form the client & typing the following command


show conn local ( ip of the client )


it will show you the connections

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