I was reading a murder mystery yesterday where a critical plot point was that the villain's MAC address was captured in Apache logs. That appears to be nonsense: IP address yes, MAC, no. He was using ...

In networking and communications, the formats, codes and procedures for transmitting a unit of data (frame, packet) from one node to another. Known as a "layer 2 protocol," the data link protocol is ...

What is a network protocol? Most textbook writers state something like this: A network protocol is a set of guidelines or standards for the operation of network devices, the methods of operation, and ...

The harmonious operation of the various networking devices in a LAN requires correct and valid configuration of the protocols and applications that are enabled in ...

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 ...

A couple posts ago, we talked about Layer 1 of the OSI Model — the Physical Layer. Today, we’ll start our climb up the Model with a visit to Layer 2, the Data Link Layer. The Data Link Layer is one of ...