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CentOS7-firewalld

钟晓川
2023-06-25 / 1 点赞 / 623 阅读

查看防火墙状态

[root@localhost /]# systemctl status firewalld
 firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: active (running) since Tue 2020-08-18 17:32:56 CST; 56s ago
     Docs: man:firewalld(1)
 Main PID: 1607 (firewalld)
    Tasks: 2
   Memory: 28.1M
   CGroup: /system.slice/firewalld.service
           └─1607 /usr/bin/python2 -Es /usr/sbin/firewalld --nofork --nopid

开启防火墙

[root@localhost /]# systemctl start firewalld

关闭防火墙

[root@localhost /]# systemctl stop firewalld

查看已开放端口

[root@localhost /]# firewall-cmd --list-all
public (active)
  target: default
  icmp-block-inversion: no
  interfaces: ens33
  sources: 
  services: dhcpv6-client ssh
  ports: 
  protocols: 
  masquerade: no
  forward-ports: 
  source-ports: 
  icmp-blocks: 
  rich rules:

防火墙开放端口:(开放端口后需重载防火墙)

[root@localhost /]# firewall-cmd --zone=public --add-port=3306/tcp --permanent
success
[root@localhost /]# firewall-cmd --reload
success

# 命令含义:
–zone #作用域add-port=80/tcp #添加端口,格式为:端口/通讯协议
–permanent #永久生效,没有此参数重启后失效
firewall-cmd --reload # 重载防火墙

移除开放的端口

[root@localhost /]# firewall-cmd --zone=public --remove-port=80/tcp --permanent

firewalld 基本使用

firewalld的基本使用

启动: systemctl start firewalld
关闭: systemctl stop firewalld
查看状态: systemctl status firewalld
开机禁用 : systemctl disable firewalld
开机启用 : systemctl enable firewall

systemctl是CentOS7的服务管理工具中主要的工具,它融合之前service和chkconfig的功能于一体。

启动一个服务:systemctl start firewalld.service
关闭一个服务:systemctl stop firewalld.service
重启一个服务:systemctl restart firewalld.service
显示一个服务的状态:systemctl status firewalld.service
在开机时启用一个服务:systemctl enable firewalld.service
在开机时禁用一个服务:systemctl disable firewalld.service
查看服务是否开机启动:systemctl is-enabled firewalld.service
查看已启动的服务列表:systemctl list-unit-files|grep enabled
查看启动失败的服务列表:systemctl --failed

配置firewalld-cmd

查看版本: firewall-cmd --version
查看帮助: firewall-cmd --help
显示状态: firewall-cmd --state
查看所有打开的端口: firewall-cmd --zone=public --list-ports
更新防火墙规则: firewall-cmd --reload
查看区域信息: firewall-cmd --get-active-zones
查看指定接口所属区域: firewall-cmd --get-zone-of-interface=eth0
拒绝所有包:firewall-cmd --panic-on
取消拒绝状态: firewall-cmd --panic-off
查看是否拒绝: firewall-cmd --query-panic
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