I'm trying this question again, see if I can get an answer this time. I'm trying desperately to get the ISA to allow traffic to pass through it that is destined for another network. I have a linksys vpn router hanging off of the ISA's dmz. VPN router's LAN(DMZ) address is 10.112.1.3 VPN router's WAN address is 140.168.42.60 The remote network also has a linksys vpn router. VPN router's WAN address is 68.80.66.170 VPN router's LAN address is 10.116.1.1 After establishing the tunnels successfully: I can successfully communicate with hosts on the ISA's dmz from the remote network and I can successfully communicate with the remote network from the hosts on the ISA's dmz. I can communicate successfully(throughr the ISA)from the hosts on the ISA's dmz with clients on the local network behind the isa (10.128.0.0). I cann't communicate with the clients on the local network behind the ISA from the remote network. I can't communicate with the clients on the remote network from clients on the local network behind the ISA. How do I set the ISA to allow the traffic destined for the local network (10.128.0.0) from the remote network (10.116.1.0) pass through it and vice versa? Any help would be greatly appreciated!