While officials at U.S. ports are increasingly using IT to protect their physical perimeters, they also worry about securing their internal information systems from attack. At the Port of Corpus ...

Data sent over a network is directed through specific ports, numbered 1 through 64435. A computer uses port numbers – similar to channels on a television – to determine how network traffic should be ...

Though Firewalls are necessary when your computer is connected to the Internet, they can cause problems trying to get Internet aware programs working properly. For example, if you wanted to host a ...

Port Query (PortQry.exe) is a command-line utility in the Windows operating system that you can use to help troubleshoot TCP/IP connectivity issues. The tool reports the port status of TCP and UDP ...

Netstat, the TCP/IP networking utility, has a simple set of options and identifies a computer’s listening ports, along with incoming and outgoing network connections. This data can be very helpful if ...

All our computing devices rely on technology that allows them to connect to other devices and networks. Some of these work using electromagnetic systems, but a good number of them must use a physical ...

The universal serial bus (USB) enables users to connect plug-and-play devices to a PC, but different kinds of USB exist. USB 1.0 and 1.1 are older versions of the interface that are much slower than ...