Hi All, i am attempting to block packets based on there content. The data string i need to block is not ascii. So i am trying to use a hex string. This is what i am useing at the moment. iptables -I FORWARD -p tcp --dport 5515 -m webstr --content 0D:00:0D:00:0D -j DROP Will this work ? Any web links to info regarding this would be great. Thanks.