Layers 7 through 4 are geared more to the application than the lower layers, which are designed to move packets from one place to another no matter what they contain. This top layer defines the ...

In the next few lessons we will discuss topics that were previously covered in the Byte-Sized series. However, in each case we will delve deeper into the topic and will discuss it in more detail. The ...

A network switch is a small hardware device that links multiple computers together within one local area network, wide area network and different network topology. Network switches work at Data Link ...

We met Mr. Murphy, of “What can go wrong, will” infamy, in the introduction to failure modes and the discussion of failure modes at the foundation levels. Now we will learn his tricks on shared media ...

Morey Haber, Chief Security Advisor at BeyondTrust, is an identity and technical evangelist with over 25 years of IT industry experience. Recently, I was reminiscing with a colleague about unique ...