There is a patch that I wrote (it is currently outdated!) at:

http://www.atopia.net/downloads/

entitled "m0n0wall-authlogpatch-11.13.04.tar.gz".

This patch creates (against version 1.1) an auth.log file, which logs 
Radius username, Source Mac Address, and Source IP address to the log file 
when a user successfully authenticates.  When they unsuccessfully 
authenticate, it does the same, except logs it as unsuccessful.

Is it possible to incorporate something like this into 1.2b7?  Its a very 
very simple patch, I know many people could use it.  It could even be 
incorporated as a hidden config option.  Its just tedious for us to 
continue to customize every new version, and it sounds like a good idea.

Thoughts?  Inputs?

Regards,

Matt