Since you are receiving requests from a downstream proxy server; your ISA cannot see the IP for nor authenticate the "original clients". Choose a web filtering package that doesn't require user authentication. ________________________________ From: isalist-bounce@xxxxxxxxxxxxx on behalf of Pepe (YA) Sent: Thu 5/11/2006 6:17 AM To: isalist@xxxxxxxxxxxxx Subject: [isalist] chaining ISA Hello I have a LAN where users have configured their proxy settings to go through a proxy server (ISA 2000). This server is redirected/chained to another one (ISA 2004) but, of course, the request received by ISA 2004 are done from IP (ISA 2000) and username (ISA 2000). How can I change to redirect the requests form the users and see clients IP and usernames from original client at the ISA 2004? I need to know the usernames, I want to install a WebFiltering solution on the ISA 2004 and I need to know the IP and/or username from clients in order to be able to block as needed. Thanks in advance All mail to and from this domain is GFI-scanned.