[rhel7] 2. 关闭防火墙

• 关闭防火墙，并设置开机自动关闭

1. 查看防火墙服务运行状态

[root@localhost network-scripts]# # 查看服务运行状态
[root@localhost network-scripts]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
   Active: active (running) since 五 2017-03-10 20:47:38 CST; 37min ago
 Main PID: 1071 (firewalld)
   CGroup: /system.slice/firewalld.service
           └─1071 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid

3月 10 20:47:32 localhost.localdomain systemd[1]: Starting firewalld - dynamic firewall daemon...
3月 10 20:47:38 localhost.localdomain systemd[1]: Started firewalld - dynamic firewall daemon.

• 临时关闭防火墙，重启后丢失。

[root@localhost network-scripts]# systemctl stop firewalld
[root@localhost network-scripts]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since 五 2017-03-10 21:31:04 CST; 23s ago
  Process: 1071 ExecStart=/usr/sbin/firewalld --nofork --nopid $FIREWALLD_ARGS (code=exited, status=0/SUCCESS)
 Main PID: 1071 (code=exited, status=0/SUCCESS)

3月 10 20:47:32 localhost.localdomain systemd[1]: Starting firewalld - dynamic firewall daemon...
3月 10 20:47:38 localhost.localdomain systemd[1]: Started firewalld - dynamic firewall daemon.
3月 10 21:31:02 localhost.localdomain systemd[1]: Stopping firewalld - dynamic firewall daemon...
3月 10 21:31:04 localhost.localdomain systemd[1]: Stopped firewalld - dynamic firewall daemon.

• 为了验证，重启一下试试
  重启命令reboot 或者 init 6

[root@localhost weibo]#  systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
   Active: active (running) since 五 2017-03-10 21:54:06 CST; 1min 53s ago
 Main PID: 1031 (firewalld)
   CGroup: /system.slice/firewalld.service
           └─1031 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid

3月 10 21:53:56 localhost.localdomain systemd[1]: Starting firewalld - dynamic firewall daemon...
3月 10 21:54:06 localhost.localdomain systemd[1]: Started firewalld - dynamic firewall daemon.

果然还有

• 关闭防火墙，开机自动关闭

[root@localhost weibo] # systemctl disable firewalld
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service.

重启系统，看看是否真正的关闭了

[root@localhost weibo]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)

真的关闭了