TCP and UDP communication monitoring under Windows with PortExpert

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PortExpert is a free application that can provide very useful information on all TCP and UDP communications connected to the system and is therefore useful for identifying potential threats. Nowadays, we hear many stories of piracy in which millions of computers are compromised by malware. TCP/UDP traffic monitoring can help a user protect their computer from active threats. You can check all active connections that attempt to connect to the Internet or send receiving packets.

PortExpert checks open TCP or UDP ports that can be used by hackers to perform malicious activities on the system. A computer user must scan for threats, viruses or open ports, and must scan in time to detect and remove those threats from his computer.

Monitor TCP, UDP ports

January 2021 Update:

We now recommend using this tool for your error. Additionally, this tool fixes common computer errors, protects you against file loss, malware, hardware failures and optimizes your PC for maximum performance. You can fix your PC problems quickly and prevent others from happening with this software:

  • Step 1 : Download PC Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.


When a user starts PortExpert, he sees a list of all TCP or UDP ports that are active and connected to his remote IP address. A user can double-click on such an active connection to continue digging and learn more about that connection. The Freeze Time option can always be used to disable any connection.

The function can be used to learn more about the IP address location. It opens the website when an IP address is selected in the active connection pool. By clicking on the Search Web function, a user can learn more about the current process that is accessing the Internet via an active TCP/UDP connection.

The Show System Process is another option that allows this user to check the currently active ports of OS files. Show Local Connection opens the current active UDP port connection and a user can select such a running process and read basic information about the process ID and protocol (TCP, UDP) used to connect, the local address and the remote address with the port number.


/? to list all commands and job description.

-n are other commands that can help the user check various active connections.

PortExpert free download

Get it Homepage. Don’t forget to download the Lite installer or the Portable version, otherwise you may be offered a bundled software.

RECOMMENDED: Click here to troubleshoot Windows errors and optimize system performance