How to check which ports are open in centos7

In centos7, you can use "firewalld-cmd" to view the open ports. "firewalld-cmd" can display firewall-related configuration information. The syntax is "firewall-cmd --zone=public -- list-ports".

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

How to check which ports are opened by centos7

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

The centos7 version is very useful for the firewall To strengthen, no longer use the original iptables, enable firewalld

The example is as follows:

• Configure firewalld-cmd

• View Version: firewall-cmd --version

• View help: firewall-cmd --help

• Display status: firewall-cmd --state

• View all open ports: firewall-cmd --zone=public --list-ports

• Update firewall rules: firewall-cmd --reload

• View zone information: firewall-cmd --get-active-zones

• View the zone to which the specified interface belongs: firewall-cmd --get-zone-of-interface=eth0

• Reject all packages: firewall-cmd --panic-on

• Cancel the rejection status : firewall-cmd --panic-off

• Check whether it is rejected: firewall-cmd --query-panic

You can use any A firewalld configuration tool to configure zones and firewall policies.

Expand knowledge:

Recommended tutorial: "centos tutorial"

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