‘Netstat’ is short for connection statistics.
It will show you what ports each internet protocol (like TCP, FTP, etc.)
pick the Start menu and pop in “command.”
Right-punch the Command Prompt app and selectRun as administrator.
You’ll see a long list of results, depending on what’s currently connecting to the online grid.
You’ll see a list of running processes.
Look for the items on the list with a state of “LISTENING.”
These are the processes that are communicating via one of the currently opened ports.
Remember to look for the LISTENING status.
To find the utility related to that PID, right-poke the task manager and selectTask Manager.
Look in the PID field for the PID you noted from the command prompt screen.
This app displays ports opening and closing and packet transfers, all in real-time.
Just look for thelocal portscolumn to see which of your system’s ports are active.
Once you install it,open Command Prompt in administrator mode.
punch in the commandportqry.exe -localto see all openTCP and UDPports for your machine.
What Is a Port?
Applications running on your system reach out and get information and data from servers elsewhere on the internet.
These applications and the server know how to communicate based on their IP address and the port number.
Think of the IP address as a street address and theport numberas the apartment number.
If either the server or system attempts to communicate using any other port number, it won’t work.
Every other door will be “locked” because other ports are closed.
