The world's most popular RADIUS Server.The RADIUS server
FreeRADIUS is the industry leading RADIUS server. Based on current statistics, there are over 50,000 deployments of the software. These deployments include small sites with 10 users, large-scale enterprises with tens of thousands of users, and carrier-class deployments with over 10 million users. In total, the sites that we know are using FreeRADIUS support nearly 100 million users. The only other servers that come close in terms of market share and/or number of sites are products from Cisco and Microsoft.
The server scales easily from embedded systems with small amounts of memory to systems with millions of users. It is fast, flexible, configurable, and supports more authentication protocols than most commercial servers. It includes support for SQL, LDAP, RADIUS Proxying, failover, load balancing, and nearly 100 vendor dictionary files. It can perform authentications via the PAP, CHAP, MS-CHAP, EAP-MD5, EAP-GTC, EAP-TLS, EAP-TTLS, PEAPv0, LEAP, EAP-SIM, and Digest authentication protocols. It has
The server is released under the GNU General Public License, Version 2 (GPLv2), which means that it is free to download and install.