Authenticating users

Various authentication protocols are supported by FreeRADIUS. They vary in complexity with PAP being the simplest and EAP the most complex.

Editing the users file

If a user store consists of the users file, remember that you have to send the running FreeRADIUS process a SIGHUP signal before the latest changes to the users file to become effective.

#> kill -1 `cat /var/run/radiusd.pid`

Note

If you do not know what the SIGHUP signal is, it has a long history that is explained on this Wikipedia page:

http://en.wikipedia.org/wiki/SIGHUP

FreeRADIUS uses it in following (modern) way:

Daemon programs sometimes use SIGHUP as a signal to restart themselves, the most common reason for this being to re-read a configuration file which has been changed.

The FAQ page on the FreeRADIUS Wiki includes a basic script that you can use to automate the committing of changes to the users file. Please note that the information on the FAQ should be used as a guideline and may require additional...