CentOS7 防火墙基础设置

查看防火墙是开启的

systemctl start firewalld
 

查看防火墙的配置

firewall-cmd --state
firewall-cmd --list-all

开放端口访问规则

firewall-cmd --permanent --add-port=80/tcp
firewall-cmd --reload    #重新加载防火墙配置

移除端口访问规则

firewall-cmd --permanent --remove-port=80/tcp
firewall-cmd --reload   #重新加载防火墙配置
 

开放端口段

firewall-cmd --permanent --zone=public --add-port=1000-2000/tcp

允许某个IP访问

firewall-cmd --permanent --add-rich-rule='rule family=ipv4 source address=192.168.10.21 accept'

禁止某个IP访问

firewall-cmd --permanent --add-rich-rule='rule family=ipv4 source address=192.168.10.21 drop'

运行某个IP访问某个端口

firewall-cmd --permanent --add-rich-rule='rule family=ipv4 source address=192.168.10.21 port protocol=tcp port=8089 accept'

禁止某个IP访问某个端口

firewall-cmd --permanent --remove-rich-rule='rule family="ipv4" source address="192.168.10.21" port port="8089" protocol="tcp" accept'

允许某个IP段访问

firewall-cmd --permanent --add-rich-rule='rule family=ipv4 source address=192.168.10.21/31 accept'
 

注：防火墙设置更改后执行  firewall-cmd --reload