VLANs and Network Segmentation: A Practical Guide

Flat networks where everything can talk to everything are simple but risky. Segmentation with VLANs improves both security and performance.

What VLANs do

A VLAN logically separates one physical network into isolated segments — for example, splitting staff, guests, voice, cameras and servers. Devices in one VLAN can't reach another without passing through a controlled gateway.

Why segment

Segmentation contains threats, reduces broadcast traffic, and lets you apply different security policies to different groups. It's a foundation of zero-trust thinking.

Getting it right

Plan VLANs around function, document the scheme, and enforce policy at firewalls and switches. Al-Gazelle helps design segmented networks that are secure and easy to manage.