centos7防火墙配置

一、在工作中远程连接经常通过堡垒机连接，不能直接开启防火墙。所以就需要写入配置文件中

编译配置文件 /etc/firewalld/zones/public.xml

<?xml version="1.0" encoding="utf-8"?>

<zone>

  <short>Public</short>

  <description>For use in public areas. You do not trust the other computers on networks to not harm your computer. Only selected incoming connections are accepted.</description>

  <service name="dhcpv6-client"/>

  <service name="ssh"/>

  <port protocol="tcp" port="80"/>

  <port protocol="tcp" port="22"/>

  <rule family="ipv4">

    <source address="172.21.0.16"/>

    <port protocol="tcp" port="3306"/>

    <accept/>

  </rule>

</zone>

注释：

#开启端口

  <port protocol="tcp" port="443"/>

  <port protocol="tcp" port="80"/>

  <port protocol="tcp" port="22"/>

#开启ip+端口

  <rule family="ipv4">

    <source address="172.21.0.16"/>

    <port protocol="tcp" port="3306"/>

    <accept/>

  </rule>

最后重启防火墙就可以了

systemctl restart firewalld.service

#查看规则

[root@VM_0_14_centos html]# firewall-cmd --list-all

public

  target: default

  icmp-block-inversion: no

  interfaces:

  sources:

  services: dhcpv6-client ssh

  ports: 80/tcp 22/tcp

  protocols:

  masquerade: no

  forward-ports:

  sourceports:

  icmp-blocks:

  rich rules:

	rule family="ipv4" source address="172.21.0.16" port port="3306" protocol="tcp" accept

二、最主要的ssh端口用配置文件写其他规则就无所谓了！

命令直接写规则

#永久开启9090端口

firewall-cmd --zone=public --add-port=9090/tcp --permanent

#Postgresql端口设置。允许192.168.142.166访问5432端口

firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="172.27.0.2" port protocol="tcp" port="1521" accept"

巴特西

centos7防火墙配置

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