I have established a VPN tunnel between our two facilities and I'm unable to figure out how to access that tunnel. In my main building I have a Cisco Pix Firewall 506e with a T1 connection on one domain, and the other facilitiy has a 501 Pix Firewall with ASDL on another domain. In both facilities we are using Windows Server 2003. I have been doing some investigation and I'm wondering if I need to install ISA to the servers which both are domain controllers. I can't figure out how too access the tunnel to send data back and forth does anyone have any ideas? I can post both firewall configurations if needed.