linux 开启防火墙操作

1)在/etc/sysconfig/  下新建iptables文件,添加如下代码:

  

*filter

:INPUT ACCEPT [0:0]

:FORWARD ACCEPT [0:0]

:OUTPUT ACCEPT [4:528]

-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT

-A INPUT -p icmp -j ACCEPT

-A INPUT -i lo -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT

-A INPUT -j REJECT --reject-with icmp-host-prohibited

-A FORWARD -j REJECT --reject-with icmp-host-prohibited

COMMIT

 

1) 重启后生效 

  开启: chkconfig iptables on 

  关闭: chkconfig iptables off 

2) 即时生效,重启后失效 

  开启: service iptables start 

  关闭: service iptables stop 

 

posted @ 2015-09-25 14:54  hxyphp  阅读(240)  评论(0编辑  收藏  举报