Hi all TCP connection flow by this scenario Can someone explain me where pass borders of state ESTABLISHED, NEW.
1-> SYN 2<- SYN ACK 3-> ACK connected .... 4-> ACK 5<- ACK .... 6-> FIN 7<- ACK 8<- FIN 9-> ACK closed I think so: 1,2,3 NEW 2,3,4,5,6,7,8,9 ESTABLISHED 2,3,4,5,6,7,8,9 RELATED i`m wrong? with this rules outgoing connect work incomming connect not work this demonstrate 2,3,4,5,6,7,8,9 = ESTABLISHED iptables -A FORWARD -o eth_external -i eth_internal -p tcp -d x.x.x.x --dport x -j ACCEPT iptables -A FORWARD -i eth_external -o eth_internal -p tcp -s x.x.x.x --sport x -m state --state ESTABLISHED -j ACCEPT
