Blue Breeze

ip 테이블 설정 #### centos vi /etc/sysconfig/iptables # Firewall configuration written by system-config-firewall # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 25 ..

참고 iptable을 이용한 포트포워딩 iptables -t nat -F iptables -t nat -X iptables -t nat -Z iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE iptables -t nat -A PREROUTING -p tcp -i eth0 --dport 2222 -j DNAT --to x.x.x.x:22 eth0 : 주 네트워크 인터페이스 x.x.x.x : 외부 서버