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 ...

I'm currently converting a whole lot of IP address data from some quite ghastly flat files.<BR>Ghastliness aside, I'm trying to sort out a way to check each IP listed to check if it's a subnet address ...

I have an Excel spreadsheet containing IP addresses and subnet masks. I need to derive the subnet of each IP address in the spreadsheet.<BR><BR>Example: IP (column A): 10.1.230.84, Subnet Mask (column ...

Your IP address is something you usually don't need to think about—in fact you might never have heard of it before—but it's an important little piece of information attached to every device on your ...

When network problems seem to defy the laws of physics, you'd better know your way around the dark region below layer 3 Long, long ago, before I could tell the difference between a /20 and a /30, a ...