linux 防火墙配置

1起停用防火墙

1:#查看防火状态
systemctl status firewalld
service  iptables status
firewall-cmd --state

2:#暂时关闭防火墙
systemctl stop firewalld
service  iptables stop

3:#永久关闭防火墙
systemctl disable firewalld
chkconfig iptables off

4:#重启防火墙
systemctl enable firewalld
service iptables restart  
firewall-cmd --reload

5：#开启防火墙
systemctl start firewalld

 

2.防火墙配置开放，关闭指定端口

1.# 防火墙配置开放指定端口
firewall-cmd --zone=public --add-port=3336/tcp --permanent
2.#查看已开启的端口
firewall-cmd --list-ports
3.#查看防火墙状态
firewall-cmd --state
4.#开启防火墙
systemctl start firewalld
5.#开启端口  重启防火墙生效
firewall-cmd --zone=public --add-port=3306/tcp --permanent
6.#删除开放的端口  重启防火墙生效
firewall-cmd --zone=public --remove-port=80/tcp --permanent
7.#重启防火墙
firewall-cmd --reload