Communication Project in ORACLE - Questions

Hi:

        I have some peculiar requirements for a remote communication project with an ORACLE 7.2 database.

1. I need only IP connections to be allowed for users of this project and IPX rejected. However, for users of the database other than those of this project, I want IPX to be an allowable medium. Is this even possible? Any thoughts? Even if this is not possible at the database level, is there any network tool that will do this for me?
2. I dont want to distribute several copies of the tnsnames.ora file to clients. I just want to maintain one copy. However, to have such an arrangement would mean that the users would have to map to this common drive. In the netware environment we have, would this mean that we are talking IPX again (which for some reason, the project leader does not want for this project)?
3. Is there anyway of making the tnsnames.ora unreadable, so that I wont have anyone reaading our port numbers/addresses? This is another reason why I do not want to distribute copies of our tnsnames.ora to users of this project.

thanks a lot,

-Badri

p.s: We have a Novell Network to a Sequent/Dynix machine. We are running ORACLE 7.2.2.4. Received on Mon Feb 12 1996 - 00:00:00 CET