Zenmap

Zenmap: Track network activity, and the traffic on a specific website, based on the available hosts, with this intuitive application

Network administrators and advanced users looking for a reliable way to track website traffic and manage network workstations can benefit from using Zenmap for the task.

The tool has a simple and intuitive layout, with straightforward options to ensure network monitoring is an effortless task. It can show several types of data related to services and hosts, across multiple tabs accessible from the main window.
As a result, Zenmap lets you verify the ports for a selected host and view details such as state, number, version, protocol and service in use. Based on the selected host it can acquire the network topology.

The tool can display information about the currently selected server, including status, scanned and closed ports, open, filtered, hostnames, Ipv4 and Ipv6 addresses and much more. There are a number of profiles you can use, each offering a different scan mode, and each of them can be customized. Of course, as the program supports direct commands you can also create new profiles from scratch.