Tag: networking

Stop using your registrar's janky DNS panel. Here's how Cloudflare DNS actually works, proxying, DNSSEC, dynamic DNS, and email records that don't break.

Master Traefik's label-based routing in Docker: entrypoints, routers, middlewares, TLS, and the mental model that makes it all click.

Set up Nginx Proxy Manager in Docker, get SSL certs, proxy hosts, access lists, and TCP streams, without reading a 40-page nginx manual.

Learn VLAN basics for your home lab: 802.1Q tagging, trunk vs access ports, managed switch setup, and pfSense VLAN configuration to isolate IoT, guests, and your NAS.

Hide your SSH port from scanners with port knocking. It's not a replacement for security, but it's a valid defense-in-depth tactic.

The upload works locally and dies through NGINX. The four timeouts that matter, the config that breaks them, the buffering trap, and how to test first.

Set up Chrony for NTP time sync in your home lab. Covers chrony.conf, chronyc tracking, stratum levels, LAN NTP server setup, and why correct time matters more than you think.

You turned the VPN on and half your traffic still leaves over the normal route. How VPN routing works, reading the routing table, and forcing all traffic.

Your backend logs every client as 127.0.0.1 because the proxy dropped the header. Set X-Forwarded-For, X-Real-IP, and X-Forwarded-Proto right in Nginx.

IPv6 isn't just for the future, it's broken on your network right now. Here's why you should care and how to actually set it up.

Your DNS queries go out in plain text, so your ISP logs every site you visit. This covers how DoH, DoT, and DoQ fix that, and how to self-host with AdGuard Home.

You don't need a GUI to see network packets. Learn tcpdump filters, flags, and pcap capture to debug servers from the command line, no Wireshark needed.