Easy VPN Server and cisco vpn client

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Oct 22nd, 2008
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Hi all, I configured CISCO 2821 as Easy vpn server and its working fine for all exceptfew users who are using CISCO vpn client behind SpeedTouch (DSL Modem). Attached is the output from Debug crypto isakmp. For problematic cleint, output varies when it says

"Phase 1 packet is a duplicate of a previous packet".


I'd really appreciate your help in this.

Thanks in advance and regards,

Abid Hussain

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Farrukh Haroon Wed, 10/22/2008 - 04:48
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Have you enabled VPN passthrough on the DSL modem?



abidgorsi Wed, 10/22/2008 - 07:13
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Hi Farrukh,

Thanks for replying, Well dear the i just came to know the actualy topology. Its SpeedTouch dsl modem---->CNET G-wireless Router-----> Client (with Cisco vpn client).

CNET G-Wireless router has lan ip address and wan ip address (public ip). So i think Speed touch is configured in bridge mode. So now can you please clarify where to enable the passthrough and how if its at G-wireless router. I checked its web interface but i didn't find any explicit option of "VPN passthrough". But it gives us Port forwarding, nat and other stuff. So comment plz where to go next.

Thanks again in advance


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