防火墙状态
查看防火墙运行状态
systemctl status firewalld.service
如果是关闭状态
● 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)
如果是开启状态
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
Active: active (running) since Wed 2020-09-02 10:39:22 CST; 1s ago
Docs: man:firewalld(1)
Main PID: 7369 (firewalld)
CGroup: /system.slice/firewalld.service
├─7369 /usr/bin/python2 -Es /usr/sbin/firewalld --nofork --nopid
└─7478 /usr/sbin/iptables-restore -w -n
Sep 02 10:39:21 ds1.zoen.com systemd[1]: Starting firewalld - dynamic firewall daemon...
Sep 02 10:39:22 ds1.zoen.com systemd[1]: Started firewalld - dynamic firewall daemon.
开关防火墙
开启防火墙
systemctl start firewalld
关闭防火墙
systemctl stop firewalld
重启防火墙
systemctl restart firewalld
防火墙开机自启动服务
设置开机自启动
systemctl enable firewalld
关闭开机自启动
systemctl disable firewalld
查看是否开机自启动
systemctl is-enabled firewalld
system补充
我们对service和chkconfig两个命令都不陌生，systemctl 是管制服务的主要工具， 它整合了chkconfig 与 service功能于一体。
systemctl is-enabled iptables.service
systemctl is-enabled servicename.service #查询服务是否开机启动
systemctl enable *.service #开机运行服务
systemctl disable *.service #取消开机运行
systemctl start *.service #启动服务
systemctl stop *.service #停止服务
systemctl restart *.service #重启服务
systemctl reload *.service #重新加载服务配置文件
systemctl status *.service #查询服务运行状态
systemctl --failed #显示启动失败的服务