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CentOS 7.8 FirewallD is not running

2020/09/04 15:39:20 发表 2020/09/04 15:39:20 更新 原创 雨辰 1239 0 0

今天新购阿里云 ECS 云服务器一台，设置防火墙（FirewallD）时发现，默认情况下并没有开启防火墙，发出提示信息FirewallD is not running，记录解决过程如下。

操作系统：CentOS 7.8

操作错误提示信息：

  1. [root@node01 ~]# firewall-cmd --zone=public --list-all
  2. FirewallD is not running
  3. [root@node01 ~]# systemctl status firewalld
  4. ● firewalld.service - firewalld - dynamic firewall daemon
  5.    Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
  6.    Active: inactive (dead) since Fri 2020-09-04 15:00:32 CST; 13s ago
  7.      Docs: man:firewalld(1)
  8.   Process: 11587 ExecStart=/usr/sbin/firewalld --nofork --nopid $FIREWALLD_ARGS (code=exited, status=0/SUCCESS)
  9.  Main PID: 11587 (code=exited, status=0/SUCCESS)
  11. Sep 04 14:46:34 node01 systemd[1]: Starting firewalld - dynamic firewall daemon...
  12. Sep 04 14:46:35 node01 systemd[1]: Started firewalld - dynamic firewall daemon.
  13. Sep 04 15:00:32 node01 systemd[1]: Stopping firewalld - dynamic firewall daemon...
  14. Sep 04 15:00:32 node01 systemd[1]: Stopped firewalld - dynamic firewall daemon.

解决过程：

  • 启动 FirewallD 服务

    1. [root@node01 ~]# systemctl start firewalld

  • 查看 FirewallD 服务状态，已经正常开启了。但是注意报出一个警告WARNING，下面有介绍如何处理。

    1. [root@node01 ~]# systemctl status firewalld
    2. ● firewalld.service - firewalld - dynamic firewall daemon
    3.  Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
    4.  Active: active (running) since Fri 2020-09-04 14:41:45 CST; 3s ago
    5.    Docs: man:firewalld(1)
    6. Main PID: 11251 (firewalld)
    7.  CGroup: /system.slice/firewalld.service
    8.          └─11251 /usr/bin/python2 -Es /usr/sbin/firewalld --nofork --nopid
    9. -
    10. Sep 04 14:41:45 node01 systemd[1]: Starting firewalld - dynamic firewall daemon...
    11. Sep 04 14:41:45 node01 systemd[1]: Started firewalld - dynamic firewall daemon.
    12. Sep 04 14:41:45 node01 firewalld[11251]: WARNING: AllowZoneDrifting is enabled. This is considered an insecure c... now.
    13. Hint: Some lines were ellipsized, use -l to show in full.

    警告信息：WARNING: AllowZoneDrifting is enabled. This is considered an insecure c... now.

  • 设置 FirewallD 服务，开机启动或关闭。

    设置开机启动，方便重启后，不用重复操作了。

    1. # 开机启动
    2. [root@node01 ~]# systemctl enable firewalld
    3. # 关闭开机启动
    4. [root@node01 ~]# systemctl disable firewalld

  • systemctl 操作常用命令

    1. [root@node01 ~]# systemctl start firewalld
    2. [root@node01 ~]# systemctl stop firewalld
    3. [root@node01 ~]# systemctl restart firewalld

处理 AllowZoneDrifting 警告

启动 FirewallD 服务时，报出警告：WARNING: AllowZoneDrifting is enabled. This is considered an insecure c... now.

  • 编辑 FirewallD 配置文件

    1. [root@node01 ~]# vi /etc/firewalld/firewalld.conf

  • 关闭 AllowZoneDrifting

    找到AllowZoneDrifting=yes把yes改为no，并退出保存配置。

    1. # AllowZoneDrifting
    2. # Older versions of firewalld had undocumented behavior known as "zone
    3. # drifting". This allowed packets to ingress multiple zones - this is a
    4. # violation of zone based firewalls. However, some users rely on this behavior
    5. # to have a "catch-all" zone, e.g. the default zone. You can enable this if you
    6. # desire such behavior. It's disabled by default for security reasons.
    7. # Note: If "yes" packets will only drift from source based zones to interface
    8. # based zones (including the default zone). Packets never drift from interface
    9. # based zones to other interfaces based zones (including the default zone).
    10. # Possible values; "yes", "no". Defaults to "yes".
    11. AllowZoneDrifting=no

    重启 FirewallD 服务后，再次查看服务状态，不再提示警告消息。

（完）