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Networking tutorial - IT technology blog

Deploy PacketFence NAC on Linux: Dynamic VLAN Steering and Device Control

November 4, 2026

A battle-tested guide to deploying PacketFence NAC on Debian 12. Configure out-of-band dynamic VLAN steering, 802.1X port enforcement, and automated quarantine workflows.

Networking

Configuring a Captive Portal with CoovaChilli and FreeRADIUS on Linux for Secure Guest Wi-Fi

October 17, 2026

Build a secure guest Wi-Fi gateway on Linux using CoovaChilli and FreeRADIUS. This guide walks through Layer 2/3 traffic isolation, WISPr bandwidth limiting, and captive portal splash page integration.

Networking

Deploying Network Access Control (NAC) with PacketFence: Automate Device Authentication on Wired and Wi-Fi Networks

April 28, 2026

PacketFence is an open-source NAC platform that controls which devices can connect to your wired and Wi-Fi network using 802.1X, RADIUS, and dynamic VLAN assignment. This guide covers installation, switch configuration, Active Directory integration, and deployment tips drawn from a real ransomware incident response.