CentOS中iptables防火墙 开放80端口方法
1、开放端口:
代码如下复制代码
[root@WX32 ~]# iptables -I INPUT -p tcp --dport 80 -j ACCEPT
2、保存配置:
代码如下复制代码
[root@WX32 ~]# service iptables save
Saving firewall rules to /etc/sysconfig/iptables: [ OK ]
3、重启防火墙:
代码如下复制代码
[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 ]
4、查看配置:
代码如下 复制代码
[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
5、端口查看方法:
代码如下 复制代码
[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
补充:
查看防火墙信息:/etc/init.d/iptables status
关闭CentOS防火墙服务:/etc/init.d/iptables stop
检查是不是服务器的80端口被防火墙堵了,
可以通过命令:telnet server_ip 80 来测试
代码如下:
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
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