防火墙配置列子:
CentOS 6
-A INPUT -p tcp -m state –state NEW -m tcp –dport 555 -j ACCEPT
-A INPUT -p tcp -m state –state NEW -m tcp –dport 555-s 162.17.127.249 -j ACCEPT
-A INPUT -p tcp -m state –state NEW -m tcp –dport 555-s 12.14.67.32/28 -j ACCEPT
-A INPUT -p tcp –dport 3306 -m iprange –src-range 12.196 .4.0-12.196.4.64 -j 接受
CentOS 7
[root@centos7 ~]# firewall-cmd –zone=public –add-port=80/tcp –permanent
查询端口号80 是否开启:
[root@centos7 ~]# firewall-cmd –query-port=80/tcp
重启防火墙:
[root@centos7 ~]# firewall-cmd –reload
查询有哪些端口是开启的:
[root@centos7 ~]# firewall-cmd –list-port
命令含义:
–zone #作用域
–add-port=80/tcp #添加端口,格式为:端口/通讯协议
–permanent #永久生效,没有此参数重启后失效
关闭firewall:
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
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