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Sunday, June 5, 2011

Port scanning



In computer networking, a port is an application-specific or process-specific software construct serving as a communications endpoint. It is used by transport protocols of the Internet Protocol Suite, such as Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). A specific port is identified by its number, commonly known as the port number, the IP address with which it is associated, and the type of transport protocol used for communication.

A port scanner is a software application designed to probe a server or host for open ports. This is often used by administrators to verify security policies of their networks and by attackers to identify running services on a host with the view to compromise it.A port scan is "An attack that sends client requests to a range of server port addresses on a host, with the goal of finding an active port and exploiting a known vulnerability of that service."
Best port scanners: nmapHping2Superscan 


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