When you start TCPView it will enumerate all active TCP and UDP endpoints, resolving all IP addresses to their domain name versions. Starting from Windows XP (and moving through Vista, 7 or Server 2008) TCPView also reports the name of the process that owns the connection. You can download the latest version from This is a free program that shows you a detailed listings of all TCP and UDP endpoints exactly as Netstat would do, but in a clear and easy-to-read graphical interface.Īll the local and remote addresses endpoints and the state of TCP connections is displayed.
That’s why the Sysinternals team at Microsoft has created TCPView. However its output is an old-style, text only list of connections, so it can be hard to use or clearly understand its content. Microsoft Windows is shipped with the command line utility Netstat that is commonly used to list all the connections opened on a machine and troubleshoot them. Where is connecting your machine? Are all the connections legitimate? Is somebody connecting to your machine? It’s very important to know about the various open TCP and UDP connections as some of them can be the clear indication that some Trojan is using your connection or that maybe somebody is trying to access your system.
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