IT Certification and Training Blog

What are the differences between an IPSec VPN and a GRE tunnel?

Posted by Kelson Lawrence on Jun 5, 2013 8:53:00 AM

By Tim Charlton

IP Security (IPSec) Virtual Private Networks (VPNs) and Generic Routing Encapsulation (GRE) tunnels are both methods for transferring data across public, intermediary networks, such as the Internet. However, there are considerable differences between the two technologies. Let’s start with a brief overview.

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Tags: VPN vs GRE, differences between VPN and GRE, Tim Charlton

A Few Bytes About 32-bit vs. 64-bit Processing

Posted by Kelson Lawrence on Mar 25, 2013 8:49:00 AM

By Tim Charlton

What’s the difference between 32-bit and 64-bit computing?

If you’re in the market for a new computer, or perhaps just a new operating system (OS), you’ve likely noticed designations such as x86, x64, 32-bit, or 64-bit. What do these designations mean, and how do they relate to your next technology purchase? Simply put, these designations indicate the amount of data that a computer system can process at any given time.

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Tags: Tim Charlton, 32-bit Processing, 64-bit Processing

An Administrator’s Guide to Popularity

Posted by Kelson Lawrence on Mar 20, 2013 9:34:00 AM

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Tags: Tim Charlton, Network Administrators guide, tips, assess, backup, repair, event logs