Answering the question: "How do firewalls and intrusiondetection systems work?" This video covers operational security for enterprise networks, in particular rulebased and flowbased packet filtering.
Based on Computer Networking: A TopDown Approach 8th edition, Chapter 9.

Slides are copyright 19962020 J.F. Kurose, K.W. Ross All Rights Reserved., and freely available here: https://gaia.cs.umass.edu/kurose_ross...

Background music: https://www.epidemicsound.com/referra...