Network Security and the State of the Art: Defence in Depth to Zero Trust, SDN, SD-WAN and SASE

Deep End Era. Engineering with Sankalp · Oct 29, 2026 · 1h 21m

At twenty past two, Callum Reyes sees twelve stadium cameras phoning home to addresses they should never reach. Twenty-two minutes later the beacons are dark. The finale turns that night into a tour of modern network security and a map of the whole Complete Guide.

Chapters

00:00:00 Opening: Cameras Talking to Strangers

00:03:16 Morris, Mirai and the Shape of the Problem

00:06:21 CIA, Threats and the Defender's Map

00:10:36 Worked Example: Tracing the Camera Traffic

00:17:01 Firewalls, NGFW, IDS and IPS

00:21:34 Encryption in Depth and the VPNs That Carry It

00:24:50 Access Control: ACLs, AAA…