How to Open Port 3306 on Linux

To open port 3306 on Linux, you can follow these steps:

1. Open the terminal and log in as the root user.
2. To check the status of the system firewall, you can use the following command:
3. Show the status of the ufw firewall.
4. If the firewall is already enabled, please confirm if port 3306 has been allowed to pass through. If not, use the following command to add the allow rule:
5. Grant permission for port 3306 by using the command ‘sudo ufw allow 3306’.
6. If you are using another firewall tool (such as firewalld), please configure it according to the documentation of that tool.
7. To apply the changes, you can restart the firewall service using the following command.
8. Restart the ufw service using sudo systemctl.
9. Make sure that the MySQL server is installed and running. If not, install and start MySQL.
10. Now, the port 3306 is open and can be accessed locally or remotely.