TCPView

TCPView is a useful tool to control network traffic generated through the TCP/IP protocol.

Columns display information about the process that created the connection, the protocol being used, the local port being accessed, the destination IP address, and the port it will use.

It also indicates the state of the connection: listening, close wait, established, and time wait. As the connection passes from one state to another, TCPView changes the color of the entry to make it easier to identify active processes.

If you think that a process is involved in suspicious activity, TCPView will help you check its progression, and enable you to then close or terminate the connection.