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