防火墙知识点:

CentOS6关闭防火墙使用以下命令

//临时关闭
service iptables stop
//禁止开机启动
chkconfig iptables off

CentOS7中若使用同样的命令会报错

1. stop  iptables.service
2. Failed to stop iptables.service: Unit iptables.service not loaded.

这是因为CentOS7版本后防火墙默认使用firewalld,因此在CentOS7中关闭防火墙使用以下命令:

//临时关闭
systemctl stop firewalld
//禁止开机启动
1. systemctl disable firewalld
2. Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
3. Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

当然,如果安装了iptables-service,也可以使用下面的命令:

yum install -y iptables-services
 //关闭防火墙
1.  service iptables stop
2. Redirecting to /bin/systemctl stop  iptables.service
//检查防火墙状态
1. service iptables status
2. Redirecting to /bin/systemctl status  iptables.service
3. 鈼iptables.service - IPv4 firewall with iptables
4.    Loaded: loaded (/usr/lib/systemd/system/iptables.service; disabled; vendor preset: disabled)
5.   Active: inactive (dead)
posted on 2019-07-06 10:42  gong^_^  阅读(415)  评论(0编辑  收藏  举报