systemctl stop firewalld.service
systemctl disable firewalld.service
开始防火墙:
systemctl start firewalld.service
systemctl enable firewalld.service
查看防火墙状态:
systemctl status firewalld
查看防火墙开放的端口:
firewall-cmd --zone=public --list-ports
增加防火墙开放的端口:
firewall-cmd --zone=public --add-port=20880/tcp --permanent
重启防火墙:
systemctl restart firewalld.service
再次查看是否生效:
firewall-cmd --zone=public --list-ports