If your company network is having problems and you need to troubleshoot it, you also need to know some basic information about the computers on the network. Internet Protocol is the underlying ...

When your sign up for Internet access on behalf of your company or purchase Web hosting for your company's Web servers, you will purchase either a dynamic IP address, a single static IP address or a ...

George Ou explains IP subnetting using his own graphical approach. It's a great primer for students and a nice refresher for others. IP subnetting is a fundamental subject that’s critical for any IP ...

Is there an easy way (like via a .Net library) that allows me to get the IP address and subnet mask of the local machine that the application is running on?

Knowing how an IP address identifies a host on a network can be confusing. Before you begin calculating various addresses, you should know the fundamentals of IP addressing. Todd Lammle describes this ...

More and more security devices being designed to communicate over local area networks (LAN) and the Internet. In smaller installations the security dealer is going to probably be responsible for ...

One of the most prevalent problems with IP networks occurs when IP subnet masks are incorrect. This seems to happen frequently because the concept of the subnet mask is not understood accurately. In ...

In an upcoming blog I expect to write about configuring a home router, which requires logging on to it. This, in turn, requires knowing the IP address of the router. Non-techies typically don’t know ...