Radius filter characters in ldap search

[Alessandro Lazzini]

Hi to all,
I use freeradius version 0.9.3 and i have a problem with some characters in 
User-Name attribute.
I often receive from nas this username and this make many problem.

Mon Jan 26 09:11:03 2004 : Auth: Login incorrect (rlm_ldap: User not 
found): [}#] (from client RADIUS-PROXY-ROMA port 6363 cli 0981948114)
Mon Jan 26 09:11:03 2004 : Auth: Login incorrect (rlm_ldap: User not 
found): [}#] (from client RADIUS-PROXY-ROMA port 6363 cli 0981948114)
Mon Jan 26 09:11:14 2004 : Error: rlm_ldap: ldap_search() failed: Bad 
search filter: (uid=l8IK1RI-4}2X5} } } } )}#)
Mon Jan 26 09:11:14 2004 : Error: rlm_ldap: ldap_search() failed: Bad 
search filter: (uid=l8IK1RI-4}2X5} } } } )}#)
Mon Jan 26 10:04:57 2004 : Error: rlm_ldap: ldap_search() failed: Bad 
search filter: ([EMAIL PROTECTED] }7}"}&} }} } }%}&} 
}&nd}'}"}(}"}-}#}&&[EMAIL PROTECTED]"} }7}"}&} }} } }%}&} }&nd}'}"}
(}"}-}#}&PA~}#)
Mon Jan 26 10:04:57 2004 : Error: rlm_ldap: ldap_search() failed: Bad 
search filter: ([EMAIL PROTECTED] }7}"}&} }} } }%}&} 
}&nd}'}"}(}"}-}#}&&[EMAIL PROTECTED]"} }7}"}&} }} } }%}&} }&nd}'}"}
(}"}-}#}&PA~}#)

I would like filter characters in username and allow only some characters, 
i try to use this regular expressions
DEFAULT User-Name !~ "[EMAIL PROTECTED]", Auth-Type := Reject
in users file but the ldap module search username in database and them 
rejects the user.
Do you know a way to avoid the search in ldap?
Sorry for my bad english :)

regards,

Alessandro Lazzini

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