Hi Juan, Why in the world do you want to use packet filters? Are you on the business end of an OC3? If you're being DoS'd, then have your upstream provider deal with the problem. If you're not being DoS'd, then install a spam whacker like MailEssentials and say goodbye to spam. :-) 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: Juan [mailto:becker1@xxxxxxxxxxxxxxxxx] Sent: Wednesday, April 16, 2003 3:59 PM To: [ISAserver.org Discussion List] Subject: [isalist] Spam - Blocking IP Range http://www.ISAserver.org How do I block SMTP traffic from a range of IP addresses (209.203.198.0 - 209.203.168.255) I am already blocking offending domains using the SMTP Filter, but I don't want to enter each address in this block individually. TIA John ------------------------------------------------------ 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 ------------------------------------------------------ Exchange Server Resource Site: http://www.msexchange.org/ Windows Security Resource Site: http://www.windowsecurity.com/ 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')