What is Network port?
A '''network port''' is a 16-bit number that identifies one side of a connection between two computers. Computers use port numbers to determine to which process or application a message should be delivered. As [[Network address|network addresses]] are like street address, port numbers are like suite or room numbers. Any program may use any port, though some port numbers have a [http://www.iana.org/assignments/port-numbers standard use] and some programs may be limited in which ports they can use for security reasons. [[Firewall (networking)|Firewalls]] often block access to ports based on the [[network address]] and port of the source or destination computer, or the program using the port (if the firewall is running on the same computer). {{tech-stub}} [[Category:Computer networking]]