![]() So let us first know what a port scanner is.Ī port scanner enables you to determine all open ports present on the network i.e. Moreover, it exposes the existence of security devices on the network, such as firewalls between the source and the destination. Similarly, when a port scan runs on a network, it exposes which ports are open and receiving the information. In the context of our example, port scanning is the process of knocking on doors to check if someone is home. The method of determining the open ports on the network is called a port scan (you can also do a remote port scan). To understand clearly ports, consider ports as entry points or doors of a house and services as the traffic entering into a house via entry points. In other words, it is a point where information is sent and received. In the networking world, a port is an endpoint where communication takes place.
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