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VPN Tunnel VPN 3020 to ASA 5520

Hi All,

I have setup a VPN tunnel on my VPN 3020, which connects to a Cisco ASA 5520 on the other end. The tunnel comes up fine, both phases, and I can see traffic being sent from my end through the tunnel, but no traffic ever comes back. The other end, claims not to see the traffic coming from my end through the tunnel. I've looked through the logs on my end and everything looks fine. I thought first it might be a routing issue on the other end, but since they are not seeing the packets on their ASA, I'm not so sure. Any ideas on what might be happening?


Re: VPN Tunnel VPN 3020 to ASA 5520

I would make sure your ACLs for interesting traffic match exactly and enable NAT-T. Here's a great doc for troubleshooting VPNs.

Hope that helps.