I have just upgraded a server to use ISA 2004 and have run into a problem. On the old ISA 2000 server had some static routes configured to other networks which are connected via a router on the internal network, this worked fine. Now that we have installed the ISA 2004 server we are unable to access the other networks due to the stricter rules set now used. I have tried adding a rule to allow the traffic to the other LAN's but think I have confused myself. The network is as below Internet-----------ISA 2004 -------LAN X (172.22.4.0/24)----------Router A--------------WAN------------Router B------------LAN Y (172.22.11.0/24) What would be the best way to set the rules up to allow traffic from LAN Y to the ISA 2004 server. I also have a SBS 2003 site which we are about to upgrade to SP1 which will require this. The SBS box currently is configured as the default gateway for the clients and they have an application which is required to be routed via the clients internal WAN. Thanks Andy