更新centos防火墙设置开启80端口访问
我们以添加80端口为例操作如下:
[root@centos httpd]# /sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT
保存
[root@centos httpd]# /etc/rc.d/init.d/iptables save
iptables:将防火墙规则保存到 /etc/sysconfig/iptables: [确定]
如果上面的步骤还没好的话,可能是这个iptables文件使用的是包含调用。
一般的在/etc/sysconfig/iptables这个路径上
或者使用vi打开这个文件修改手动添加
[root@centos httpd]# vi /etc/sysconfig/iptables
# Generated by iptables-save v1.4.7 on Tue Feb 14 07:32:18 2012 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [7:640] -A INPUT -p tcp -m tcp --dport 10000 -j ACCEPT -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT -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 22 -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT # Completed on Tue Feb 14 07:32:18 2012
重新启动服务
[root@centos httpd]# service iptables restart iptables:清除防火墙规则: [确定] iptables:将链设置为政策 ACCEPT:filter [确定] iptables:正在卸载模块: [确定] iptables:应用防火墙规则: [确定]
查看端口是否生效:
[root@centos httpd]# /etc/init.d/iptables status
表格: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:10000 2 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 3 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED, 4 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 5 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 6 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp 7 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with ic
Chain FORWARD (policy ACCEPT) num target prot opt source destination 1 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with ic
Chain OUTPUT (policy ACCEPT) num target prot opt source destination