查看当前防火墙状态
systemctl status firewalld.service
w0412@localhost ~]$ systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2021-12-03 06:01:12 EST; 42s ago
Docs: man:firewalld(1)
Main PID: 761 (firewalld)
Tasks: 2
CGroup: /system.slice/firewalld.service
└─761 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid
关闭防火墙（临时关闭）
systemctl stop firewalld.service
需要输入管理员密码
禁用防火墙开机启动
systemctl disable firewalld.service
[root@localhost w0412]# systemctl disable firewalld.service
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.查看是否关闭
[root@localhost w0412]# systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
Active: inactive (dead)
Docs: man:firewalld(1)
Dec 03 06:01:11 localhost.localdomain systemd[1]: Starting firewalld - dynami...
Dec 03 06:01:12 localhost.localdomain systemd[1]: Started firewalld - dynamic...
Dec 03 06:03:24 localhost.localdomain systemd[1]: Stopping firewalld - dynami...
Dec 03 06:03:24 localhost.localdomain systemd[1]: Stopped firewalld - dynamic...
Hint: Some lines were ellipsized, use -l to show in full.