Ubuntu firewall configuration UFW

ufw

//查看防火墙状态
sudo ufw status verbose

//开启防火墙
sudo ufw enable

//关闭防火墙
sudo ufw disable


//允许某个端口
sudo ufw allow {PORT}   
eg:
    //sudo ufw allow 22  
    //sudo ufw allow 7000:7010/tpc   //指定端口区间和协议

//允许某个ip
sudo ufw allow {IP}   
eg:
    //sudo ufw allow from 192.168.2.6  
    //sudo ufw allow from 192.168.2.0/24  允许子网

//设置默认规则
sudo ufw default deny incoming  //默认deny所有incoming

//指定网卡和端口哦
sudo ufw allow in on eth0 to any port 80

//重置防火墙
sudo ufw reset

//删除规则
sudo ufw delete [序号]