I dont know how silverstream works, but I wouldnt have thought the web proxy service should effect it. The WPS just listens on port 8080 (or whatever you specify) of the internal card, and port 80 (or whatever you specify) of the external card....you could check by making the wps listen on a different port (9999 etc). The only time the web proxy service shoudl effect this is if your running the silverstream server on your ISA server, and on the internal cards port 8080. Does silverstream require any secondary conenctions though, try adding secondary connections of 1025-65534 inbound and outbound...if that works, just try the inbound, if that works, try closing the port gaps. May be quicker to check your isa logs though, see whats being blocked etc. Regards, Jez. -----Original Message----- From: Thum Chee Weng, Ronnie [mailto:rthum@xxxxxxxxxxxxxxxxxx] Sent: 19 November 2001 06:51 To: [ISAserver.org Discussion List] Subject: [isalist] ISA and Silverstream Sensitivity: Personal Hi, I've some FW Client using Silverstream. The Silverstream server is running on port 8080 (specify by us). I've allowed Protocol Definition for Silverstream (Outbound TCP, port 8080) to go thru. My clients is still unable to connect. Any ideas ? Could it be the port no. is the same as ISA's web proxy ? rgds :-) - ronnie -