Posted inLinux
Mastering ss and ip Commands for Advanced Linux Network Troubleshooting
Ditch the deprecated netstat and ifconfig. This guide covers how to use ss and ip for high-performance Linux network troubleshooting and socket analysis.
Posted inNetworking
Deploying a Wireless Mesh Network with B.A.T.M.A.N. Advanced (batman-adv) on Linux: Self-Healing Infrastructure for HomeLab and IoT
Six months of running batman-adv in production across a HomeLab and IoT deployment. This guide compares mesh networking approaches, breaks down batman-adv's real-world strengths and weaknesses, and walks through a complete implementation on Ubuntu/Debian with batctl monitoring and systemd automation.
Posted inNetworking
Simulating Poor Network Conditions with tc netem on Linux: Test Latency, Packet Loss, and Jitter Before Production
After a production incident caused by untested network conditions, I started using tc netem to simulate latency, packet loss, and jitter before every deployment. This guide covers practical netem scenarios for realistic resilience testing on Linux.
Posted inNetworking
Keepalived & VRRP: Build a Floating IP for High Availability on Linux
Keepalived implements VRRP on Linux to give your servers a shared floating IP address. When the primary node fails, the standby automatically claims the VIP in seconds. This step-by-step guide covers installation, configuration, health check scripts, and failover testing on Ubuntu/Debian.
Posted inNetworking
Setting Up a Squid Proxy Server on Linux: Access Control, Content Filtering, and Bandwidth Caching
Squid proxy server gives you fine-grained control over your network's outbound traffic — access control by IP or user, content filtering via domain blocklists, and HTTP caching to reduce bandwidth costs. This guide walks through a complete production-ready setup on Linux.
Posted inNetworking
VLAN Configuration Basics: What I Learned Getting Paged at 2 AM
A hands-on VLAN configuration guide built from real production incidents — covering access ports, trunk ports, inter-VLAN routing, and a 5-minute pre-change checklist that prevents 2 AM outages.