CentOS中iptables防火墙 开放80端口方法

[root@WX32 ~]# iptables -I INPUT -p tcp --dport 80 -j ACCEPT

[root@WX32 ~]# service iptables save
Saving firewall rules to /etc/sysconfig/iptables:          [  OK  ]

[root@WX32 ~]# service iptables restart
Flushing firewall rules:                                   [  OK  ]
Setting chains to policy ACCEPT: filter                    [  OK  ]
Unloading iptables modules:                                [  OK  ]
Applying iptables firewall rules:                          [  OK  ]
Loading additional iptables modules: ip_conntrack_netbios_n[  OK  ]

[root@WX32 ~]# service iptables status
Table: filter
Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination        
1    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           tcp dpt:80

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

Table: filter

Chain INPUT (policy ACCEPT)

num target prot opt source destination

1 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:80

2 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80

3 RH-Firewall-1-INPUT all -- 0.0.0.0/0 0.0.0.0/0

Chain FORWARD (policy ACCEPT)

num target prot opt source destination

1 RH-Firewall-1-INPUT all -- 0.0.0.0/0 0.0.0.0/0

1>.解决方法如下：

/sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT

2>.然后保存：

/etc/rc.d/init.d/iptables save

3>.重启防火墙

/etc/init.d/iptables restart