VPN between ASA 5510 and Netscreen

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Sep 16th, 2007
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I'm able to get the tunnel to establish but am getting the following error:

4 Sep 17 2007 03:31:32 402116 IPSEC: Received an ESP packet (SPI= 0x57FB960B, sequence number= 0x25) from (user= to The decapsulated inner packet doesn't match the negotiated policy in the SA. The packet specifies its destination as, its source as, and its protocol as 1. The SA specifies its local proxy as and its remote_proxy as

I can ping from the Cisco side to the Netscreen side, but in the reverse. The Netscreen reports the tunnel being inactive.

Are there any interoperability issue here? What can I do to make this work?

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Jon Marshall Sun, 09/16/2007 - 23:56
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Hi Anthony

From the above message it looks like you have setup the VPN with a local subnet of and a remote subnet of

But the source and destination IP addresses on the packet that has been encrypted are not part of these subnets. This may well be because you are initiating packets off the firewall itself. You could either

1) Try a connection from a client behind your firewall

2) Add in the public IP addresses 221.133.x.x etc. to your crypto map access-list to allow the traffic.



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