under Linux, you can choose between rlm_unix and rlm_passwd, probably
you will have nearly same results in performance (I hope :) ).
+Q: I'm using realms with rlm_passwd. I see rlm_passwd do not strip realm
+ from user name. How to configure rlm_passwd to strip realm?
+
+A: In case you configured realm to strip username, User-Password attribute
+ is not changed. Instead, rlm_realm creates new attribute Stripped-User-Name.
+ All you need is to use Stripped-User-Name instead of User-Name as a key
+ field for passwd file.
+
5. Acknowlegements:
ZARAZA, <3APA3A@security.nnov.ru>