linux networking Archives

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Supercharging Linux Networking: A Practical Guide to eBPF TC

September 1, 2026

Ditch the overhead of iptables. This guide shows you how to use eBPF TC to build high-performance, programmable network filters and QoS directly in the Linux kernel.

Networking

DNS Tunneling with iodine on Linux: Bypass Firewalls and Access Networks via DNS Protocol

August 29, 2026

Learn how to set up DNS tunneling with iodine on Linux to bypass firewalls in restrictive network environments. This guide covers server setup, client connection, traffic routing, NAT configuration, and practical troubleshooting tips for authorized use cases.

Networking

How to Set Up a PPPoE Server on Linux: ISP-Grade IP Allocation and User Authentication

August 29, 2026

Setting up a PPPoE server on Linux puts you in the same operational territory as real ISPs — IP pool management, per-user authentication, session control. This guide compares rp-pppoe against the more scalable accel-ppp, then walks through a complete setup: local auth, FreeRADIUS integration, NAT, and live session management via CLI.

Networking

Configuring Wi-Fi 6 (802.11ax) with hostapd on Linux: A Practical Performance Guide

August 26, 2026

A technical guide to configuring 802.11ax on Linux. Learn how to use hostapd to enable OFDMA, BSS Coloring, and TWT for superior wireless efficiency.

Networking

Hardening the Wire: A Practical Guide to Linux MACsec (IEEE 802.1AE)

August 24, 2026

Secure your Linux network at Layer 2. This guide shows you how to configure IEEE 802.1AE (MACsec) to encrypt server-to-server traffic and protect against sniffing and spoofing.

Networking

Mastering systemd-networkd: The Minimalist’s Guide to Linux Networking

August 15, 2026

Ditch the overhead of NetworkManager and Netplan. This guide shows you how to use systemd-networkd for faster boot times and lightweight networking on Linux servers.

Networking

4G/5G USB Modem Failover on Ubuntu Server with ModemManager and NetworkManager

July 17, 2026

After three fiber outages in six months, I configured automatic 4G/5G USB modem failover on Ubuntu Server using ModemManager and NetworkManager. Six months later, it's handled seven more disruptions without a single manual action — here's the exact setup I'm still running in production.

Networking

Multi-Area OSPF with FRRouting: Scaling Linux Networks for the Enterprise

July 17, 2026

Scale Linux routing with Multi-Area OSPF and FRRouting. This guide covers ABR configuration, Stub areas, and SPF optimization for enterprise networks.

Networking

Deploy BFD with FRRouting on Linux: Achieve Sub-Second Network Failover

July 17, 2026

Don't let slow OSPF or BGP timers crash your uptime. Discover how to use BFD and FRRouting on Linux for ultra-fast, sub-second network failure detection.

Networking

BIRD Routing Daemon on Linux: Configure BGP and OSPF for HomeLab and Self-Managed Networks

July 5, 2026

BIRD2 is a mature, lightweight routing daemon widely used at ISPs and internet exchanges — and it works just as well for HomeLab BGP route reflectors and OSPF-based self-managed networks. This guide walks through installing BIRD2 on Linux, configuring BGP with templates and route filters, setting up OSPF adjacencies, and verifying everything with the birdc control shell.