Each software or even service running on your computer has been associated with certain port on your computer. A simple example is, port:80 which is fairly used by HTTP, i.e. the websites you access on internet starting from HTTP, use port:80 on your computer. Due to security reasons, it is very important to know and scan all ports on your computer. Most often Hackers attack through an Open Port on your computer.
Free Port Scanner is a small, fast, easy-to-use and robust port scanner for the Win32 platform. You can scan ports on fast machines in a few seconds and can perform scan on predefined port ranges. This tool uses TCP packets to determine available hosts and open ports, service associated with port and other important characteristics. The tool is designed with a user-friendly interface and is easy to use.
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