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 ...

my employer is running out of (private) IP addresses. Because there were some rather bad decisions made during the set up of the network (like using the 129.122.0.0/16 subnet....) I do not want to add ...

I am using a strongSwan IPSec gateway for Windows 7 and Server 2008 based clients on the same subnet. The Windows VPN client requires a virtual ip address to be assigned by the IPsec gateway. What I ...

We found several utilities to help calculate IP subnets, subnet ranges, and CIDR addressing. IP Subnet Calculator (free) is a good, basic subnet calculator that shows available subnets based on IP ...

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 ...

This is the first of many technical blog posts I’m going to post on IPv6 architecture and implementation for a Microsoft Windows-based environment. I started off with a basic introduction of the IPv4 ...

The last edition of this column talked about subnets and introduced folding paper as an illustration of how subnets can be understood. This will be very useful as we proceed. MORE IPv4 SUBNETTING ...

To connect some copiers or multi-function printers to a router, you may need to know the subnet mask value for the network. A subnet mask defines the value range of IP addresses used in a workgroup.

Editor’s Note: Because you can never have too many wizards, we have expanded the scope of the Wireless Wizards to include a full panel of experts from the top wireless vendors. They’re at your ...

If computers in an open network talk freely with one another and two computers start talking at the same time, you have a “data collision.” Collisions may be arbitrated via Carrier Sense Multiple ...