Linux防火墙：掌控端口和IP的开放与限制

最编程 2024-02-02 10:00:31

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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 firewalld

重新加载配置

firewall-cmd --reload

重启防火墙

service firewalld restart

查看已经开放的端口

 firewall-cmd --list-ports

关闭已开放的端口,以80端口为例

firewall-cmd --permanent --remove-port=80/tcp

批量开放80到90之间的所有端口

firewall-cmd --zone=public --add-port=80-90/tcp --permanent

批量关闭80到90之间的端口

firewall-cmd --permanent --remove-port=80-90/tcp --remove-port=80-90/tcp

限制单个ip，限制192.168.1.100这个ip访问80端口

firewall-cmd --permanent --add-rich-rule="rule family='ipv4' source address='192.168.0.200' port protocol='tcp' port='80' reject"

批量限制ip，限制192.168.3.x的所有ip访问80端口

firewall-cmd --permanent --add-rich-rule="rule family='ipv4' source address='192.168.3.0/24' port protocol='tcp' port='80' reject"

允许单个ip访问80端口

firewall-cmd --permanent --remove-rich-rule="rule family='ipv4' source address='192.168.0.200' port protocol='tcp' port='80' accept"

批量允许多ip访问80端口

firewall-cmd --permanent --remove-rich-rule="rule family='ipv4' source address='192.168.3.0/24' port protocol='tcp' port='80' accept"

查看rich-rule

firewall-cmd --zone=public --list-rich-rules