ISA "hides" the client IP address from web servers, which get the ISA machines IP address in server variables such as REMOTE_ADDR. It was suggested in one thread on a microsoft.public newsgroup that an ISAPI filter could stuff an extra bit of info into the headers to get around this problem. Has anyone done this? Is there any other work-around to make client IP visible to the web server? Thanks ---------------------------- G. Waleed Kavalec Baca, Stein, White and Associates 281-342-2646