consent to monitoring banner for ssh

[Carl G. Riches]

On Tue, 4 Dec 2007, Bill Tangren wrote:

> A new policy has been implemented here at work. The old policy stated
> that, when someone logs in to a system via ssh, I had to display a consent
> to monitor banner, which is easy to implement.
>
> The new policy, however, requires that the user has to somehow signify
> that they have read and will abide by the policy. In essence, I have to
> get a yes or no input from the user, possibly just after they log on, and
> if they say no, log them off. If they say yes, they get to proceed.
>
> My question: what is the best way to implement this? I have to make sure
> the user cannot remove this functionality for future logins, so I can't
> put it in any of their login scripts. This is easy to implement for GUI
> logins, but I don't know the best way to proceed for ssh. Any ideas?
>

We did a somewhat-similar task at a place where I used to work.  We set 
everyone's login shell to a locally-written perl script.  That perl script 
did things such as ensure that the user had permission to log in to the 
system, check the user's quota, print out a blurb, then exec( )'d tcsh. 
It needed some interupt handling, though, to fit what you want to do.  I 
don't have the code anymore, but this might give you an idea of what 
direction to go.  (Would you need to record user's answers to your 
question in a database for future reference?  This might give you that 
ability.)

HTH,
Carl

-- 
Carl G. Riches
Software Engineer
Department of Biostatistics
Box 357232                      voice:     206-616-2725
University of Washington        fax:       206-543-3286
Seattle, WA  98195-7232         internet:  cgr at u.washington.edu