topic Re: Modem caller ID in Operating System - HP-UX

Modem caller ID

Javier Ballesteros — Mon, 12 Jun 2000 11:11:22 GMT

We have some external users accessing via modem our HP9000 R380 (HP-UX 10.20) server. Provided that:
- the telephone company offers the caller ID service (not ISDN but analog lines)
- the modem supports the caller ID feature

is it possible to configure HP-UX to:
- reject incoming calls based on the calling telephone number?
- log the callers' telephone numbers?

Thank you very much.

Re: Modem caller ID

Albert E. Whale, CISSP — Mon, 12 Jun 2000 13:07:48 GMT

I am not certain about HP-UX rejecting the caller, but most RAS (Remote Access Servers) provide authentication via Radius or another technology which will allow you to accomplish this either via the Caler's Source Number or the Group that the user exists in.

I have found this a Much easier method to implement becuase there are no controls over what the telephone company is going to provide you with as far as incoming telephone number. Now you can indicate which GROUP of Users have access to a 'Specific RAS Server', or you can indicate via HP-UX which GROUP of Users can dial into the server directly.

Hope that helps.

Re: Modem caller ID

Fred Martin_1 — Tue, 13 Jun 2000 17:58:59 GMT

You could create a group for modem users.

Then in the file /etc/profile, put an 'if' statement with this logic:

IF tty is modem
AND user is not in modem group
THEN send email to admin
logout user