IOS router L2L IPSEC over UDP?

[Brian M]

How do I get an IOS router to do IPSEC over UDP for a lan to lan connection? I have enabled the 'crypto ipsec nat-transparency udp-encaps' but it still won't pass traffic.

I have a firewall between the IOS router and VPN Concentrator but the VPN client works 100% with IPSEC over UDP but not the router.

I get a connection and the SA on the concentrator shows send and receive but the SA on the IOS side shows encapsulation only, I have a 0 for decapsulation.

Thanks in advance!!

[#2]

Check the encryption settings on the router. It should match the one on the VPN concentrator. Thats one of the major for no decryption.

[Brian M]

Yes, they are exact. I actually get the SAs built and the other side is sending, it's just this side is not receiving.