How to Find Open Ports on a Server

Instructions

  1. Open the Command Prompt by clicking on "Start" then "All Programs" then "Accessories" then "Command Prompt."

  2. Listen for open ports by typing 'netstat -an | find /i "listening"' in the command prompt. Hit the "Enter" key on your keyboard and wait for all of the ports to show up on the screen.

  3. Find the established, or active, ports on the server by typing in 'netstat -an |find /i "established"' in the command prompt. Windows will search for all of the active ports.

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