防火墙常用的一些命令
#systemctl status firewalld.service #查看firewalld状态
#systemctl stop firewalld #关闭
#systemctl start firewalld #开启
#systemctl restart firewalld #重启
#systemctl disable firewalld #开机自动关闭 //RHLE7
#chkconfig --list|grep network #查看开机是否启动 //RHLE6
#systemctl enable firewalld #开机自动启动
centos6配置
#service iptables status # 查看防火墙状态
#service iptables stop #停止防火墙
#service iptables start # 启动防火墙
#service iptables restart # 重启防火墙
#chkconfig iptables off # 永久关闭防火墙