I have just completed the the installation of IPTABLES in Debian based on Russel's "Packet Filter" documentation. I am now attempting to create the rules that Russel has provided in the "Rusty's Really Quick Guide To Filtering". Unfortunately I am receiving an errror. polm:/etc# iptables -N block polm:/etc# iptables -A block -m state --state ESTABLISHED,RELATED -j ACCEPT iptables: No chain/target/match by that name When I do an iptables -L , I can see the "block" chain. Why does the second command return an error ? Thanks, Ben --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.681 / Virus Database: 443 - Release Date: 5/10/2004