(RADIATOR) Rejecting users with not allowed characters in username

[c.w.vandervelden at kpn.com]

Hello there,
 
We recently started billing to our customers, but now I'm confronted with
users trying to get a workaround.
 
In our authentication we make use of an LDAP server. Users are now trying to
log in with characters like:
* and \
 
The LDAP authentication succeeds (with eg. * being interpreted as a wild
card), and next the billing fails at first-> user not found (we manually
make sure the record does get recorded).
 
Question:
How do I prevent authentication to succeed?
 
Do I need to use PreAuthHook code to reject these creative users?
 
Anybody suggestions?
 
Regards,
    Karel van der Velden
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.open.com.au/pipermail/radiator/attachments/20010730/b088bdd6/attachment.html>