Internet Service Providers

AAA for millions of subscribers. Infinitely flexible policy language.

Internet Service Providers

FreeRADIUS authenticates users and tracks accounting data for millions of DSL connections and phones every day.

Enterprise Networks

Global AAA servers. Active Directory integration.

Enterprise Networks

Both wired and wireless 802.1X solutions use RADIUS as the backend. From the smallest business to the largest enterprise, IT managers can be found relying on FreeRADIUS everywhere!

Educational Institutions

Eduroam and WiFi. With 100K+ students re-authenticating every hour.

Educational Institutions

FreeRADIUS is commonly used in academic wireless networks, especially amongst the eduroam community.

Fast, feature-rich, modular, and scalable.

Get started with the world’s most widely deployed RADIUS server:

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Welcome to the FreeRADIUS project, the open source implementation of RADIUS, an IETF protocol for AAA (Authorisation, Authentication, and Accounting).

The FreeRADIUS project maintains the following components: a multi protocol policy server (radiusd) that implements RADIUS, DHCP, BFD, and ARP; a BSD licensed RADIUS client library; a RADIUS PAM library; and an Apache RADIUS module.

We provide a step-by-step guide to radiusd -X. The guide breaks down the different pieces of the debug output, and explains what they mean. Often you can just look for ERROR or WARNING to solve many problems.

FreeRADIUS is responsible for authenticating one third of all users on the Internet.

See why we're #1

Get involved with The FreeRADIUS Server Project

Our comprehensive support for protocols, data stores, directories, databases, and language integrations would not be possible without contributions from the community. Open your favourite editor and help us make FreeRADIUS better!

Develop new modules

API documentation, C code examples, and anything else you need to get up-to-speed and writing modules for FreeRADIUS.

View coding styles

Submit new modules

Developed your own module? Great! Submit your code back to the project and have it maintained by the community.

Visit our GitHub page

Patch issues

Found an issue? We accept patches for everything, from code, to documentation, and even to this website!

How to contribute

Connect with us

Get help, help others, or just say "Hi!".

Feel free to reach out; we're always happy to receive your feedback.

Visit FreeRADIUS on Stack Overflow
Visit FreeRADIUS on GitHub

Need a hand getting started?

Subscribe to our mailing lists to receive the latest FreeRADIUS updates and assistance from members of the FreeRADIUS community.

Support & services

We are the FreeRADIUS experts.

Critical deadline? We offer 24/7 commercial support through NetworkRADIUS, the official sponsor of the FreeRADIUS project.