Linux防火墙常用指令

[root@localhost ~]# echo 查看防火墙状态

查看防火墙状态

[root@localhost ~]#

[root@localhost ~]#

[root@localhost ~]# systemctl status firewalld

鈼[0m firewalld.service - firewalld - dynamic firewall daemon

Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset:

enabled)

Jul 13 20:38:05 localhost.localdomain systemd[1]: Starting firewalld - dynamic firewall

daemon...

Jul 13 20:38:05 localhost.localdomain systemd[1]: Started firewalld - dynamic firewall daemon.

Jul 13 20:38:06 localhost.localdomain firewalld[8294]: WARNING: /etc/sysconfig/network-

scripts/ifcfg-ens33: Duplicate option definition: 'DNS1=114.114.114.114'

Jul 13 20:39:47 localhost.localdomain firewalld[8294]: WARNING: ALREADY_ENABLED:

8080:tcp

Jul 13 20:44:17 localhost.localdomain firewalld[8294]: WARNING: /etc/sysconfig/network-

scripts/ifcfg-ens33: Duplicate option definition: 'DNS1=114.114.114.114'

[root@localhost ~]# systemctl status firewalld

CGroup: /system.slice/firewalld.service

└─8294 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid

Jul 13 20:38:05 localhost.localdomain systemd[1]: Starting firewalld - dynamic firewall

daemon...

Jul 13 20:38:05 localhost.localdomain systemd[1]: Started firewalld - dynamic firewall daemon.

Jul 13 20:38:06 localhost.localdomain firewalld[8294]: WARNING: /etc/sysconfig/network-

scripts/ifcfg-ens33: Duplicate option definition: 'DNS1=114.114.114.114'

Jul 13 20:39:47 localhost.localdomain firewalld[8294]: WARNING: ALREADY_ENABLED:

8080:tcp