Check for open ports or services

Identifying open ports on servers requires the port to be opened and unnecessary services to be disabled or shutdown. The server should have a minimal operating system configuration.

For Windows, run the following command using the Command Prompt:

netstat -a | findstr "LISTEN"

The ouptu of the preceding command is as shown in the screenshot:

For Linux/Unix, run the following command using the shell prompt:

netstat -antp | grep "LISTEN"