TCPView

TCPView: A Comprehensive Network Monitoring Tool

TCPView is an invaluable Windows application designed to provide a complete overview of all active TCP and UDP connections on your system, along with detailed information about their respective IP addresses. Navigating through various display options is straightforward, thanks to the user-friendly menu and toolbar buttons. This functionality is particularly beneficial for server administrators who require a clear view of network activity. TCPView effectively lists the IP addresses of all recognized TCP connections, and it offers insights into port numbers, including source and destination ports, allowing users to comprehend the protocols being implemented on their systems effortlessly.

When employing TCPView on a Linux system, it is crucial to utilize it alongside the Sysinternals utilities rather than relying on the built-in networking module of your Linux distribution. The integrated network subsystem lacks the capability to exhibit TCP connections, rendering it inadequate for displaying the desired data. Conversely, the Sysinternals networking utility offers a feature that enables users to define a custom number of connection-stuck ports. This allows for the examination of socket names linked to these ports, as well as the status of each connection. However, it's important to note that the command-line version of TCPView does not allow for viewing socket names, making selection more challenging.

For those familiar with the Sysinternals HTTP protocol library, there is an opportunity to leverage TCPView through an HTTP server by specifying a suitable image name. The "-" symbol represents the TCP socket's host name, while the ";" character denotes the port number. To examine different TCP endpoints, users can click on column headers to showcase a list of IP addresses or specify a custom group of IP addresses within TCPView to achieve an in-depth view of each server.

Overall, TCPView is a vital tool for network diagnostics, providing clarity and comprehensive insights into network connections, which are essential for effective system management.