TCP and UDP communication monitoring under Windows with PortExpert
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.