Install nmap if you don't already have it on your Linux computer. Run "sudo apt-get install nmap" on Ubuntu, or "sudo dnf install nmap" on Fedora. To investigate devices, try looking up OUIs, scanning ...

You can change your IP address from the network settings controls menu on a Windows PC, Mac, and even your phone.

Office phones have come a long way in a relatively short time. With the introduction of Internet Protocol phones, new features make those devices more akin to computers than simple phone systems.

VoIP (Voice over Internet Protocol) is a system for transmitting voice calls over the internet, rather than a phone line.