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ops-toolbox wiki

This wiki holds the durable concepts behind the ops-toolbox tools. The arithmetic behind CIDR notation, the structure of a JSON Web Token, and the definition of password entropy do not change when the tools change, so they live here rather than in the application repository.

Per-tool reference documentation lives in the ops-toolbox repository, alongside the code it describes. The tools themselves run in your browser at opstoolbox.dev.

Concept pages

Page	What it covers
Subnetting and CIDR	Prefix notation, the mask relationship, network and broadcast derivation, usable host counts, and the private address ranges
JWT Anatomy	The three token segments, base64url encoding, the common registered claims, and why decoding is not verification
Password and Passphrase Entropy	What entropy measures, the bit calculation against a character set and against a wordlist, and why length dominates alphabet size
Standards Index	The standards the tools implement, each with its identifier, a one-line summary, and the tools that touch it

Each page carries at least one worked example with real values, and closes with a link to the live tool it supports.