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From: david@cs.uow.edu.au (David E A Wilson)
Newsgroups: comp.unix.questions
Subject: Re: Can the output to a terminal be monitored?
Message-ID: <917@wraith.cs.uow.edu.au>
Date: 9 Jun 90 11:29:22 GMT
References: <2784@syma.sussex.ac.uk> <270@demott.COM> <293@psgdc>
Organization: Dept of Computer Science, University of Wollongong, Australia
Lines: 9

>In article <270@demott.COM> kdq@demott.COM (Kevin D. Quitt) writes:
>>    Is there a way that I (as root) can "tap into" a user to monitor
>>terminal activity?  I specifcally would like to do this for the modem line.

Put your modems on an Annex terminal server and you can use the tap command
to do exactly this. This however opens up another can of worms being discussed
elsewhere under the subject "Dial-up access to the Internet".
Other than this, a physical tap onto the RS-232 line from the modem is a simple
method.