The internet relies on a system of addresses that treats every computer, tablet and smartphone as a distinct device, allowing all of them to communicate with each other. Because many kinds of devices ...

In TCP/IP and UDP networks, a port is an endpoint to a logical connection and the way a client program specifies a specific server program on a computer in a network. Some ports have been preassigned ...

It's usually not practical or affordable for every computer to have its own printer, so many businesses place standard and specialized printers in convenient locations, and then share the printers ...

Data packets travel to and from numbered network ports associated with particular IP addresses and endpoints, using the TCP or UDP transport layer protocols. All ports are potentially at risk of ...

Port forwarding is a solution to a problem that many gamers know all too well: You attempt to join a friend in an online match but can’t because your connection to the gaming network is limited, ...

Last time, we mentioned that the current generation of WAN firewalls has not advanced as rapidly as the security threats that the firewalls are supposed to protect against. Today we’ll examine that in ...