How to check if the port is open in centos7

In centos7, you can use the "firewall-cmd --zone=public --list-ports" command to check whether the port is open. This command can display all open ports; firewall is used to manage the firewall, and the port Opening and closing viewing are controlled by a firewall.

The operating environment of this article: centos 7 system, Dell G3 computer.

How to check whether the port is open in centos7

You can use the firewall-cmd --zone=public --list-ports command to view all open ports

CentOS7 port The opening and closing of the view are controlled by the firewall. The specific commands are as follows:

View the firewall status: (active (running) is the open state)

Expand knowledge;

1. Open ports

firewall-cmd --zone=public --add-port=5672/tcp --permanent   # 开放5672端口
firewall-cmd --zone=public --remove-port=5672/tcp --permanent  #关闭5672端口
firewall-cmd --reload   # 配置立即生效

2. View all open ports on the firewall

firewall-cmd --zone=public --list-ports

Recommended tutorial: "centos Tutorial》

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