I'm having problems connecting to a Cisco UBR900 on my customers site since I put ISA2000 in place on my SBS box. The Cisco client is 4.01 and I use it to remotely connect to my customer's network. The message I'm getting back is that its unable to connect to the remote peer, which I know is up based on the lack of feedback from my customer. I believe ISA is blocking the connection, but don't know the ins and outs of ISA. I did review this thread and modified my configuration, no luck.
I appreciate any suggestions on how to proceed.
I will mention that I'm running the Cisco VPN client on a Virtual PC session running XP Pro.