Tagged “networking”
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A Day in the Life: The Global BGP Table
A data-driven look at how the internet's global routing table changes over a single day, with charts of announcements, w…
ADSL works over wet string
A delightfully nerdy post confirming that broadband really can run over a piece of wet string, with the details of how a…
Beej's Guides
A long-running set of free programming guides covering C, network programming, interprocess communication, and Git, writ…
BGPlay
A RIPEstat visualization that animates BGP routing and AS path history for any IP address or prefix, showing how the net…
Carrier Explode
A reference that decodes carrier settings from iPhone, Pixel, and Galaxy firmware, comparing APNs, VoLTE, 5G, and Wi-Fi…
Cavelab
A personal blog of homelab stories, covering self-hosted servers, networking, and tinkering, plus whatever else the auth…
CIDR.xyz
An interactive visualizer for CIDR ranges and IP addresses that computes subnets, masks, and ranges instantly, handy for…
Computer Mysteries
Choose-your-own-adventure debugging puzzles by Julia Evans: investigate slow websites, DNS updates that did not work and…
DNS Checker
A free tool that checks DNS record propagation across servers around the world, showing at a glance whether a domain or…
HE 3D Network Map
A 3D WebGL globe of Hurricane Electric's backbone network, showing the fiber links and data centers that carry internet…
How Did I Get Here?
A live traceroute that shows the actual network path from your device to the server, paired with a friendly explanation…
How DNS Works
A charming comic strip that explains step by step what happens when you type a website address and press enter.
How to ask for help from people who don't know you
A practical essay on writing cold messages that get answers from busy strangers, covering how to be specific, respect th…
ifconfig.co
A no-frills lookup tool that shows your public IP address and information about it, such as location and network provide…
Internet Society Pulse Blog
A blog of data-driven news, insight and analysis on internet evolution, disruption, shutdowns and technology trends from…
Is BGP Safe Yet?
A Cloudflare test page that checks whether your internet provider filters invalid BGP routes, with a plain explanation o…
Jumbo frames don't work on the internet!
Fake press releases and satirical stories about real networking problems, in the style of The Onion for people who have…
Knock-Knock.net
A live honeypot dashboard visualizing the bots knocking on one server's door, with a globe view and stats on attack prot…
Let's Code a TCP/IP Stack, 5: TCP Retransmission
A hands-on tutorial in a series building a TCP/IP stack from scratch, this installment covering how TCP retransmission d…
Low-Level Academy
An explorable systems programming course whose lessons use interactive diagrams, starting with UDP sockets and frames an…
natted.cloud
A browser-based networking lab where you build, trace and debug network topologies with firewalls, DNS, DHCP, VLANs and…
Networking and the Internet, from First Principles
A long illustrated explainer on how electricity, light and radio carry data across independent networks, built up step b…
NSLookup.io
A fast, cleanly designed DNS lookup tool that shows a domain's records and nameservers, plus related network utilities f…
Off World Backup
A tongue-in-cheek pitch for saving your files off-world before the apocalypse, paired with a clear explainer of how data…
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