If you have a DSL line in your office and use a DSL modem to connect your business computers to the Internet, you might need to use the modem's Internet Protocol address. If you don't know the IP ...

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 ...

I'm having a very strange problem with my new router. It's a Netgear wired/wireless 4-port router, plugged into a cable modem (one of those ubiquitous Surfboard ones) on Comcast's service. It can't ...