firewall open ports Close View

ps: firewall is a firewall system comes centos7, centos6 using iptables (profile path: / etc / sysconfig / iptables)

View port

firewall-cmd --zone=public --query-port=80/tcp

 Open port

# --permanent 表示永久有效，没有这个参数重启后会失效
firewall-cmd --zone=public --add-port=80/tcp --permanent

Delete Port

# --permanent 表示永久有效，没有这个参数重启后会失效
firewall-cmd --zone=public --remove-port=80/tcp --permanent

After the entry into force of the firewall modification 

firewall-cmd --reload

centos7 firewall in the configuration file (/etc/firewalld/zones/public.xml)

vi /etc/firewalld/zones/public.xml

firewalld Service

# 查看防火墙服务状态
systemctl status firewalld

# 启用防火墙服务
systemctl start firewalld

# 关闭防火墙服务
systemctl stop firewalld

# 重启防火墙服务
systemctl restart firewalld

# 开机启动防火墙服务
systemctl enable firewalld

# 关闭开机启动防火墙服务
systemctl disable firewalld