Hello all, I’ve finally wrapped up production on my new self-paced course: Practical TLS. This course is a deep dive into SSL and TLS, the protocols which secure the Internet. Simply put, this is the… Read More »Practical TLS – Course is Complete!
Supernetting is something like the inverse of Subnetting. With Subnetting, you take one Network and divide it into multiple sub-networks (subnets). With Supernetting, you are doing the opposite: you take multiple subnets and aggregating them… Read More »Supernetting, IP Aggregation, and IP Summarization
Last week I did my first live stream! I discussed how to do VLSM problems using only a pen and paper. In the Subnetting Mastery video series, I showed you how to solve VLSM problems… Read More »Upcoming Live Streams: IP Aggregation and SuperNetting – 5/13 & 5/15
I started recording a new video series covering How Data moves through the Internet. The intent of this first set of videos is to serve as the first Module of a new course I’m considering… Read More »Networking Fundamentals: How data moves through the Internet
Two types of Broadcast IP addresses exist: the Local Broadcast IP address and the Directed Broadcast IP address. In the current networking world, they mostly serve the same function. But one of them contains an… Read More »Local Broadcast vs Directed Broadcast
Access Control Lists, or ACLs, are a tool that is used to define traffic on Cisco routers. By themselves, they merely identify a particular set of traffic. How you apply the ACL then determines what… Read More »Access Control Lists (ACLs)
The final video in the ACL video series answers the age old question: Where should you apply ACLs? Specifically, we’re going to look at the ideas of applying ACLs closest to the source or closest… Read More »ACLs… Closer to the Source or the Destination?
In Part 7 of the video series on Access Control Lists we finally apply access lists to an Interface. In Video 1 we discussed that an ACL is simply a tool used to identify traffic… Read More »Applying ACLs to Interfaces