Free RADIUS troubleshooting tools

Three small tools for the three moments of RADIUS pain: registering a client, reading a failure out of a log, and proving the path works end to end. Everything runs locally — in your browser or on your own box — and everything is open source.

• RADIUS client config generator

  Generate the FreeRADIUS clients.conf block and the Windows NPS New-NpsRadiusClient PowerShell from a name, an IP, and a crypto-random secret — entirely in your browser.

• RADIUS log analyzer

  Paste FreeRADIUS radiusd -X output or a Windows NPS event and get a plain-English diagnosis with ranked causes and next checks — parsed in your browser, nothing uploaded.

• authhound-probe

  An open-source CLI that tests RADIUS / 802.1X end to end from inside your network — reachability, shared secret, PEAP and EAP-TLS, server certificates, path MTU.

Stuck on a specific error instead? Start at the error library — every FreeRADIUS error and NPS reason code, explained with next checks.