If a computer is unable to configure a valid Internet Protocol address, it can't connect to a network. If you plug a laptop directly into a modem with an Ethernet cable and receive a "No Valid IP ...

A virtual private network, or VPN, provides a layer of privacy by hiding your public IP address and making it look like you’re in another city, state or even country. When you use a VPN, it makes apps ...

Often when you're working on a computer, you need to connect to other computers to run software or check data on them. This could involve connecting to a business server used by your work team or ...