CurrPorts displays the list of all currently opened TCP/IP and UDP ports on your local computer. For each port in the list, information about the process that opened the port is displayed, including the process name, full path of the process, version information of the process (product name, file description, and so on), the time that the process was created, and the user that created it.
In addition, CurrPorts allows you to close unwanted TCP connections, kill the process that opened the ports, and save the TCP/UDP port information to an HTML file , XML file, or to a tab-delimited text file.
CurrPorts also automatically marks suspicious TCP/UDP ports with pink color. These are usually owned by unidentified applications (Applications without version information and icons)
#only 36K, freeware, no system changes, download and run
#runs on all windows versions but older versions show less details
Update:
Nir Sofer has updated the application constantly ever since we first reviewed it here on Ghacks. Users can now select to run a 32-bit or 64-bit version of the application. CurrPorts at its core has remained more or less the same though.
You can start the portable application directly after you have downloaded and unpacked it on your computer. The program then displays a list of all running processes in its interface. The information are updated in realtime, which means that you can use the program to see if applications that you install or start are trying to phone home or opening ports on your system.
The second option that you have is to check for open ports on the PC that should not be open in first place. You can improve your computer’s security by closing those ports as it reduces the number of attack vectors that attackers have. It is still necessary to research how ports are closed, as this is something that CurrPorts does not help you with.
Windows users can download Currports from the official Nirsoft website. Download Currports
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