Time for action – investigating the default realms in FreeRADIUS

In the following exercises we will learn about various aspects of realms. We will start with a clean installation of FreeRADIUS and change it subsequently to see how it handles various realm configurations:

Tip

Ensure you have a default installation of a FreeRADIUS server.

  1. Edit the users file located under the FreeRADIUS configuration directory and make sure the following entry for alice exists:
    "alice" Cleartext-Password := "passme"
  2. Restart the FreeRADIUS server in debug mode and authenticate as alice. Observe the output of the FreeRADIUS server. The following should be part of the output:
    [suffix] No '@' in User-Name = "alice", looking up realm NULL
[suffix] No such realm "NULL"
++[suffix] ...

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