Hi Fred, Listening to MP3 is different than downloading. You need to block the protocol or MIME type. As for blocking downloading, you'll need the hotfix to block file types for HTTP. Otherwise, it only works for FTP. Finally, you must force the clients to be Web Proxy clients. Configure the HTTP Redirector to drop requests from firewall and securenat clients and your users will get the hint fast :-) 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: Frederic Giroux [mailto:fgiroux@xxxxxxxxxxxxxx] Sent: Thursday, September 04, 2003 12:25 PM To: [ISAserver.org Discussion List] Subject: [isalist] Ways to block users to download a specific file extension http://www.ISAserver.org Good day to All! Is there a way to deny users to download a specific file extension (in my case MP3)? I tried using the content groups by denying MP3 but, for some reason, it is still allowed. I don't want users to be able to download or listen to MP3. Any clue? Fred ______________________________ Frederic Giroux LAN Administrator CyberCap fgiroux@xxxxxxxxxxxxxx http://www.cybercap.qc.ca 33 Prince St. Suite 301 Montreal, Qc H3C 2M7 (514) 861-7700 ext. 303 Fax : (514) 861-7700 ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: tshinder@xxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')