How to filter access to the listener

Hi,

I ahve a DB accessed via SQL NET. I like to filter the access to this DB using IP addresses.

We can do it using the protocol.ora file; BUT the problem is that the use
of this file is not FLEXIBLE at all (we can't use wildcards characters, we
have only one line to define the IP addresses, ....)

Is there another way to do this ???

Thanks for your help.

Cheers,
Abdo.

P.S.: Please reply via email and i'll summarize to the group.

--
Abdo Abdulmalak
Centre Informatique de Gestion

Universite Paul Sabatier	Tel: (33) 05 61 55 63 87 / 63 64
118 route de Narbonne		Fax: (33) 05 61 55 84 80
31062 Toulouse Cedex		email: abdulmalak_at_adm.ups-tlse.fr