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 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 inNetworking
Stop Juggling Ports: Automate Docker Traffic with Traefik and Let’s Encrypt
Say goodbye to manual Nginx updates. This guide shows you how to set up Traefik for Docker, enabling automatic SSL and dynamic routing through simple container labels.
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 inNetworking
Fixing 2 AM Network Outages: A Guide to CIDR Overlaps and DNS Troubleshooting
Production down at 2 AM? Manual IP math is your enemy. This guide covers a real-world troubleshooting workflow using subnet calculators and DNS tools to fix routing conflicts fast and privately.
Posted inNetworking
Cloudflare Tunnel: Securely Expose Internal Services Without Opening Firewall Ports
Picture this: It's 2 AM, and you need to expose an internal service. Opening firewall ports is a massive security risk, but Cloudflare Tunnel offers a secure, port-free solution. This guide details how to set it up, allowing you to safely publish web apps and SSH without compromising your network.
Posted inNetworking
Configure HAProxy/Nginx Load Balancer for Web App High Availability
Don't let a single server failure take down your web application. Learn how to configure HAProxy and Nginx as robust load balancers to ensure high availability and enhance scalability. This tutorial walks you through quick setups, deep dives into configurations, and shares essential practical tips for a resilient production environment.
Posted inNetworking
Tailscale: Simple Mesh VPN for Small Teams – A Practical Guide
Discover how Tailscale simplifies networking for small teams, providing secure and easy access to devices anywhere. This guide covers its mesh VPN approach, pros and cons, recommended setup, and a step-by-step implementation for seamless connectivity.
Posted inNetworking
Configuring IPv6 on Linux Servers: A Production-Tested Guide
This guide covers configuring IPv6 on Linux servers, from understanding different approaches like static, SLAAC, and DHCPv6, to practical, production-tested implementation steps. Learn how to set up IPv6, manage firewalls with nftables, and verify connectivity for stable and scalable network environments.