linux 防火墙添加端口

  1、vi /etc/sysconfig/iptables

  2、将3506端口加入到防火墙中

-A INPUT -m state --state NEW -m tcp -p tcp --dport 3506 -j ACCEPT

# Generated by iptables-save v1.4.7 on Fri Nov 11 11:54:22 2016
*filter
:INPUT ACCEPT [4:280]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [4:464]
COMMIT
# Completed on Fri Nov 11 11:54:22 2016
# 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 3506 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT

  3、重启防火墙,使配置生效:

/ etc / init.d / iptables restart
service iptables restart