centos6防火墙
进入防火墙配置命令
vim /etc/sysconfig/iptables
光标放到一行上,按yy,再按P,复制一行,开放端口
防火墙打开、关闭、重启、查看状态
service iptables start
service iptables stop
service iptables restart
service iptables status
centos7防火墙
开发端口,
vim /etc/firewalld/zones/public.xml
<port protocol="tcp" port="80"/>
<port protocol="tcp" port="443"/>
防火墙打开、关闭、重启、查看状态
systemctl start firewalld
systemectl restart firewalld
systemctl stop firewalld
systemctl status firewalld