I have a client who has a PIX 501 in his office. He has a server at a co-location facility, which also has a PIX. When the client wants to access his server, he creates a Cisco client VPN connection (not a PIX to PIX VPN). However, once the VPN is up, he can't access the server. If any other router is put in place of his local office PIX, he can then create the client VPN and access his server using RDP with no problem.
Does anyone have any idea how he can access his server at the co-location facility without removing his office PIX?