Can I replace this two rules iptables -A INPUT -p tcp --syn -m limit --limit 1/s --limit-burst 4 -j ACCEPT iptables -A INPUT -p tcp --syn -j DROP For only this one? (Using negation) iptables -A INPUT -p tcp --syn -m limit ! --limit 1/s --limit-burst 4 -j DROP Thanks in advanced ********************************** CTO: Eng. Jorge Agrelo O. WEb: www.novadevices.com E-Mail: jagrelo@xxxxxxxxxxxxxxx Phone: (593-2) 225-7711 ext. 105 Av. Brasil N45-08 y Condor, Quito Ecuador **********************************