Ars Technica

IPsec strongSwan tunnels on local subnet - use local subnet ip address over tunnel?

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 ...
Linux Journal

The Basics of IP Subnetting

To understand how subnetting works, you first must have a good basic understanding of IP addresses. An IP address is set of binary octets broken into quads. That definition may not have made any sense ...
TechRepublic

Expand your network by supernetting IP addresses

If you're looking to segment a TCP/IP network, subnetting is not your only option. CIDR, or supernetting, is another way to accomplish the task and offers some unique solutions. Here's how to use ...
Ars Technica

Counting IP addresses in a subnet using Excel?

I was trying to figure out how to do this myself, but then I thought "hey, I bet some Arsian has done this." <BR><BR>I have a spreadsheet with a bunch of IP addresses in a single column. I'd like to ...