In this lesson, I'm going to teach you about Discontiguous Wildcard Masks. Before watching this video, you'll want to have watched the video covering Wildcard Masks:
https://www.youtube.com/watch?v=_PuyU1PJDo0
Once you've watched that video, you can watch this video. In this video, you will learn what Discontiguous Wildcard Masks are, and how they work. Then I'll show you how you can reduce your access control list (ACL) lines by using a Discontiguous Wildcard Mask. Finally, we'll wrap up with a discussion of when Discontiguous Wildcard Masks are used today.
As a bonus, covering this content will also explain how an Access Lists processes packets against each entry.
0:00 - Start
0:10 - Pre-requisites
0:20 - Basic definition of Wildcard Masks
0:45 - Basic definition of Discontiguous Wildcard Masks
1:30 - Topology explanation
2:14 - How an Access Control List (ACL) matches traffic
4:13 - Theory behind a Discontiguous Wildcard Mask
5:32 - Viewer Quiz - Find where else Discontiguous Wildcard Mask can be used
6:45 - Why do Discontiguous Wildcard Mask exists?
7:22 - Why Discontiguous Wildcard Masks are rarely used today
8:38 - Regular Wildcard Mask are still used today
