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[FW-1] IKE FW-1 to Cisco VPN Problem



I have recently setup a VPN with a customer using their Cisco VPN concentrator. I keep getting the error message "IKE Log: Sent Notification: Invalid id information <phase 2 stage 2> Negotiation ID: xxxx" I have seen two possible solutions to this. One says that I set the other firewall to the wrong version, which I haven't specified the Cisco as FW-1. The other solution states that there could be a problem if they specify the external interface while you specify the internal. This is closer to my situation. We both specify the external interface, but they had to NAT the address of my firewall due to an ip conflict. Will IKE work with my firewall's address NATed? Does anyone else see any other problems with the setup?

 

Thank you.

 

Brian Drake

Central Technology Services

 



 
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