Centos7防火墙与端口设置
1.防火墙操作
启动: systemctl start firewalld
查看状态: systemctl status firewalld
停止: systemctl disable firewalld
禁用: systemctl stop firewalld
2.开放指定端口
firewall-cmd --zone=public --add-port=80/tcp --permanent //开放端口
firewall-cmd --reload //重新载入,使其生效
3.关闭指定端口
firewall-cmd --zone=public --remove-port=80/tcp --permanent //关闭端口
firewall-cmd --reload //重新载入,使其生效
4.查看端口状态
firewall-cmd --zone=public --query-port=80/tcp //查看端口状态