This week's lesson contain information on networking protocols and methods and covered IP v4 as well as IP v6. Although I've been using IP networking since the early 1990's, it was a great refresher, and I ever learned a few new things.
The instructor did a comprehensive job of explaining IP4 networking concepts including netowrk addresses, subnet masks, the default gateway and address classes such as public and private address assignments.
One thing that I learned a lot from was the two ways of expressing subnet masks. Since I am rather weak on this theory, I valued the lesson. I especially appreciated the process of "anding", which is a method to analyze the network address of a classless IP address. I already knew how to do this, but to have it explained in the manner that was used was interesting and most informative.
We also learned about IP v4 "supernetting", which is a way to join network segments together so that large numbers of devices can be on the same local network. It's not commonly used and is no longer needed with the larger address pool of 128 bit IP v6 addresses, but was interesting nonetheless.
Other material covered included modern VPN protocols and the strengths and weaknesses of each. One thing is clear: data has never been more secure while in transit than it is using modern methods available with the Windows 8 and Server 2102 implementation.
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