Hi Badri, You can control access to HTTP, HTTPS and HTTP tunneled FTP with the unihomed caching only ISA Server, but you'll need to install in firewall or integrated mode to control other protocols. HTH, Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: Badri Khanal [mailto:badri.khanal@xxxxxxxxxx] Sent: Tuesday, March 11, 2003 11:03 AM To: [ISAserver.org Discussion List] Subject: how to block things... I have installed ISA in a server which has only one NIC card installed and is a member of a domain. Now I want to be able to block access to certain web pages based on the CONTENTS. I also want to block MSN messenger, ICQ and Yahoo messenger. Any help or instructions will be highly appreciated. Thanks Badri Khanal