1.查看已开放的端口
firewall-cmd –list-ports
2.开放单个端口(开放后需要要重启防火墙才生效)
firewall-cmd –zone=public –add-port=8080/tcp –permanent
3.开放多个端口(开放后需要要重启防火墙才生效)
firewall-cmd –zone=public –add-port=20000-29999/tcp –permanent
(–permanent 为永久生效,不加为单次有效(重启失效))
4.关闭端口(关闭后需要要重启防火墙才生效)
firewall-cmd –zone=public –remove-port=8080/tcp –permanent
5.查看端口是否打开
firewall-cmd –zone= public –query-port=80/tcp
6.查看防火墙状态(两种方式)
firewall-cmd –state
systemctl status firewalld
7.开启防火墙
systemctl start firewalld
8.重启防火墙 (两种方式)
firewall-cmd –reload
systemctl restart firewalld
9.设置开机启动防火墙
systemctl enable firewalld
10.查看防火墙设置开机自启是否成功
systemctl is-enabled firewalld;echo $?
11.禁止防火墙开机启动
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systemctl disable firewalld
12.停止防火墙
systemctl stop firewalld
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