Phantom guest logins

Date: Tue, 18 May 1999 12:53:08 -0700 (PDT)
From: David Lott <david@pgfn.bc.ca>
To: "David L. Potter" <potter@chebucto.ns.ca>
cc: CSuite Technical Team <csuite-tech@chebucto.ns.ca>, Report System Problems <support@pgfn.bc.ca>, Linux Mailing List <linux@vaughan.fac.unbc.ca>
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On Tue, 18 May 1999, David L. Potter wrote:

> My guess is that they're orphaned/defunct processes that have died for
> some reason... 
> 
> Is there a pattern... 
>  - time of day the sessions start
>  - remote host...?

There is a definate pattern.  See attached file.

> You should be able to find the session in the output of `last` which
> should show the original tty.

Well, the last guest before this one was on tty01 which was used by
someone else minutes later. 

Very interesting.  The first occurance (this month) shows:
guest    tty??        elrond           Fri May 14 00:30 - 17:53 (2+17:23)

After that it looks like tty?? was continuously connected.  Bizzare.  I've
attached the output of: 'last guest | grep tty??'.

> If the sessions is truly orphaned I think you can just leave it unless
> it's making a nuisance of itself in some way.

It just shows silly who output.  "27/6 dialup connection(s) in use."

I hope.  Is there any chance this is the symptom of some kind of break-in? 

Cheers, David.

David M. Lott
System Administrator
P.G. Free-Net
www.pgfn.bc.ca
Prince George, BC, Canada.

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