Linux CentOS7打开、关闭端口口令操作

CentOS7使用的是firewall防火墙，不再是原来的iptables

查看firewall防火墙状态

firewall-cmd –state        或者        systemctl status firewalld

打开防火墙

systemctl start firewalld

关闭防火墙

systemctl stop firewalld

重启防火墙

firewall-cmd –relaod        或者        systemctl reload firewalld

开机自启动防火墙

systemctl enable firewalld

禁止开机启动防火墙

systemctl disable firewalld

查看已打开的端口

firewall-cmd –list-ports

打开端口

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

其中permanent表示永久生效，public表示作用域，8080/tcp表示端口和类型

关闭端口

firewall-cmd –permanent –zone=public –remove-port=8080/tcp