CentOS7放开与关闭端口

1. 查看防火墙是否启动

firewall-cmd --state
或者
systemctl status firewalld

2. 启动防火墙

systemctl start firewalld

重启

systemctl restart firewalld

3. 关闭防火墙

systemctl stop firewalld

4. 查看防火墙放开的端口

firewall-cmd --permanent --zone=public --list-ports

5. 放开8080端口

firewall-cmd --zone=public --add-port=8080/tcp --permanent
或者
firewall-cmd --add-port=8080/tcp --permanent

载入配置

firewall-cmd --reload

验证开启的8080端口是否生效

firewall-cmd --query-port=8080/tcp

6. 关闭8080端口

firewall-cmd --remove-port=8080/tcp --permanent
firewall-cmd --reload

7. 参考

https://blog.csdn.net/weixin_39477597/article/details/82464731

含切换成iptables的方法

https://www.sunjs.com/article/detail/118105b698ed4012a50ee0669d3d1c7e.html

https://www.cnblogs.com/ILoke-Yang/p/10746785.html

来源：oschina

链接：https://my.oschina.net/joininjoy/blog/3168269