how to open specified port in linux
Introduction
In the Linux operating system, you can use the firewall-cmd command line tool to open the specified port. After opening, other servers can connect to the port application specified by the device.
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Command Line
Open port 3306
firewall-cmd --zone=public --add-port=3306/tcp --permanent
Parameter Description
| parameter | Introduction |
|---|---|
| --zone | Use this zone to set or query options, else default zone,Usable for options marked with |
| --add-port | Add the port. |
| --permanent | Set an option permanently. |
operation result
success
safety warning
If your service is on a public network, you should increase the security protection applied to the specified port after opening the specified port.
Notice
If you have any questions in use, you can leave a message below, or submit issuse on github ♥