IOS router L2L IPSEC over UDP?

Unanswered Question
Dec 12th, 2007
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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!!

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Anonymous (not verified) Wed, 12/19/2007 - 13:09
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Check the encryption settings on the router. It should match the one on the VPN concentrator. Thats one of the major for no decryption.

BrianMitchellTX Wed, 12/19/2007 - 22:10
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Yes, they are exact. I actually get the SAs built and the other side is sending, it's just this side is not receiving.

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