SASE · Networking · Security
SASE and network security, from the wire up.
A practitioner's knowledge base. It starts at the physical connectivity layer and works up through the SASE stack, with honest trade-offs and stories from the field instead of vendor marketing.
The stack, bottom to top
7 layers- 01
ConnectivityUnderlay / physical access
The foundation: how sites and users physically connect to the network, and what each access type is really good (and bad) at.
- 02
SD-WAN & Network ArchitectureOverlay / routing / traffic management
SD-WAN sits on top of the underlay. This is where routing behaviour, traffic steering and network design are defined.
- 03
FirewallEnforcement & segmentation
Cloud-delivered, on-prem and hybrid firewalls, and why cloud-only does not fit every use case.
- 04
Network SecurityCloud-delivered security stack
The SSE building blocks: ZTNA, SWG, CASB, DLP and friends.
- 05
OperationsRunning it day to day
How the technologies in the stack are actually run: visibility, troubleshooting, change, incidents, suppliers and capacity.
- 06
Compliance & RegulationsFrameworks and how SASE maps to them
NIST, ISO 27001, SOC 2, GDPR and industry regulations, and how SASE features map to them.
- 07
Cyber Security ConceptsPrinciples and threat landscape
Core principles, the threat landscape, Zero Trust philosophy and security operations.
Honest about trade-offs
Every topic covers what goes wrong as well as what works. Limits and pitfalls get as much space as the pitch.
From the field
Written by a sales engineer who sits in the design workshops. It reflects what happens in real deployments, not what the datasheet says.
Built from the ground up
Each layer builds on the one below it, so a security conversation always rests on the network underneath it.