The Internet is a necessity these days, and without it, we cannot do anything with our devices, including Windows PCs. When you see the WiFi Doesn’t Have Valid IP ...

Struggling with the Windows 11 "Ethernet Valid IP" error? Discover proven, step-by-step solutions to fix your Ethernet ...

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 ...

I've recently written about using bash arrays and bash regular expressions, so here's a more useful example of using them to test IP addresses for validity. To belabor the obvious: IP addresses are 32 ...

Your online presence is tied to your IP address. Many people wonder how to change their IP addresses to improve privacy and bypass online restrictions. An IP address is linked to your location, among ...

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 ...

Subnetting a Class B network can involve some serious thought! As a network administrator, you'll have to know it and know it well. Todd Lammle walks you through clear instructions and simple examples ...

We just saw that the mask determines where the boundary between the network and host portions of the IP address lies. This boundary is important: If it is set too far to the right, there are lots of ...