【转】Linux(Centos6.5) 防火墙配置 开放指定端口

打开配置文件 

[root@localhost ~]# vi /etc/sysconfig/iptables

配置文件内容

# 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 22 -j ACCEPT   
-A INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT  
-A INPUT -j REJECT –reject-with icmp-host-prohibited   
-A FORWARD -j REJECT –reject-with icmp-host-prohibited 
COMMIT

 

开放指定端口8080

端口配置行新起一行加入下面代码

-A INPUT -m state –state NEW -m tcp -p tcp –dport 8080 -j ACCEPT

 

重启防火墙使配置生效  

命令代码

[root@localhost ~]# /etc/init.d/iptables restart

 

其它

查看开放端口

命令代码

[root@localhost ~]# /etc/init.d/iptables status 

　　

关闭防火墙  

命令代码

[root@localhost ~]# /etc/init.d/iptables stop

 

原文：https://www.iteye.com/blog/yanxiaojia-2037167