Posted inNetworking
Benchmarking Linux Network Performance: A Practical Guide to iperf3 and mtr
Tired of vague network complaints? Learn to use iperf3 and mtr to pinpoint bottlenecks, measure throughput, and analyze packet loss like a pro.
Posted inSecurity
Secure Data Deletion on Linux: Why ‘rm’ Isn’t Enough and How to Fix It
Think 'rm' deletes your files? Think again. Discover how to use shred, wipe, and dd to permanently erase sensitive data on Linux and why SSDs require a different approach.
Posted inNetworking
6 Months of Encrypted DNS on Linux: My Real-World Take on DoT and DoH
Secure your Linux DNS queries with DoT and DoH. This guide provides a 6-month review of production performance, including step-by-step setups for systemd-resolved and cloudflared.
Posted inNetworking
tcpdump: Network Packet Analysis from the Linux Command Line
tcpdump is the go-to command-line tool for capturing and analyzing network packets on Linux — no GUI, no overhead, just raw visibility into what's actually flowing through your interfaces. This guide walks through practical capture commands, BPF filters, and real production debugging scenarios to help you troubleshoot network issues fast.
Posted inLinux
Advanced Linux Networking: Moving Beyond Legacy Tools with iproute2
Ditch net-tools for iproute2. Learn how to implement Policy-Based Routing, VLANs, and Network Namespaces with real-world performance tips and practical examples.
Posted inHomeLab
Stop the Power-Loss Panic: Mastering Network UPS Tools (NUT) for Your HomeLab
Protect your HomeLab from data loss. Learn how to configure Network UPS Tools (NUT) to automate graceful shutdowns for all your servers during a power outage.
Posted inNetworking
Dynamic Routing on Linux: A 6-Month FRRouting Production Post-Mortem
Is static routing holding your Linux infrastructure back? Discover how we moved to FRRouting to achieve sub-second failover and automated route discovery in a production environment.
Posted inSecurity
Centralized Authentication on Linux with FreeIPA: A Production Guide to User and Group Management
FreeIPA gives you centralized Kerberos SSO, LDAP-backed user management, HBAC policies, and sudo rules — all in one stack built for Linux. This guide compares auth approaches, covers the real trade-offs, and walks through a production-ready FreeIPA deployment step by step.
Posted inLinux
Network Bonding and Teaming on Linux: Boost Speed and Ensure Redundancy
After six months of continuous operation, I'm sharing my experience with network bonding and teaming on Linux. Learn how to combine multiple network cards to boost speed, ensure failover redundancy, and significantly improve network performance on your servers.
Posted inLinux
Compiling and Installing Software from Source on Linux: Dependency Management and Optimization
Learn to compile and install software from source on Linux, gaining full control over features and optimizations. This comprehensive guide walks you through dependency management, the build process, configuration, and crucial verification steps. Master custom installations for your specific needs.