Wiki search
IP Subnetting and CIDR in 10 Minutes — A Practical Guide
Complete beginner guide to IPv4 addresses, CIDR prefix notation, calculating usable hosts, subnet masks, RFC 1918 private ranges, and CLI tools.
NAT and Port Forwarding — A Beginner's Guide to Router Networking
Understand SNAT, DNAT (Port Forwarding), Hairpin NAT loopback, avoiding CGNAT traps, and safely hosting services from a home or office network.
Docker Compose Patterns for the Homelab — Beginner to Pro
Complete beginner guide to organizing self-hosted services with Docker Compose, yaml syntax breakdown, persistent volumes, networking, and safe updates.
Debugging DNS with dig, host, and nslookup — Complete Sysadmin Toolkit
Master DNS troubleshooting with dig, host, and nslookup, trace root-to-leaf resolution, understand RCODE errors (NXDOMAIN, SERVFAIL), and diagnose cache delays.
Self-Hosting Authoritative DNS with example-dns
Complete beginner guide to running authoritative nameservers, Primary-Secondary replication, AXFR zone transfers, TSIG security, and the example-dns architecture.
Nginx Reverse Proxy with TLS Configuration
Complete beginner guide to setting up an Nginx reverse proxy with TLS encryption, upstream headers, syntax testing, and HSTS security.