log incorrect login to mysql

[A.L.M.Buxey at lboro.ac.uk]

Hi,

> I'd like to log to my mysql server every authentication request that
> reach my freeradius server.
> Actually I log the Access-Accept requests to radpostauth table but I'd
> like to have, into a table, the Access-Reject requests. Until now I've
> not found anything useful....

would you really like to log the fails into an SQL database? 
thats one sure way to have a nice DoS of your RADIUS system.

alan