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Re: Have I been hacked?



On Wed, May 07, 2003 at 02:51:39PM +0100, Ian Goodall wrote:
> I am running a debian woody server and when I checked the last users
> yesterday I a large number of logins in the list. On running the command
> today I get the following:
> 
> dev1:/home/ian# last
> ian      pts/0        172.16.3.195     Wed May  7 14:49   still logged in
> team1    pts/0        blue99.ex.ac.uk  Wed May  7 13:21 - 13:57  (00:35)
> 
> I have run chkrootkit but nothing was found.
> 
[snip]

Could it be that wtmp has been rotated?
If the wtmp gets to a certain size or date (I can't remember exactly) it
normally gets rotated.
If you "cd /var/log" and then "ls -l |grep wtmp" you'll probably see
wtmp.X - Where X is a number, like 1 where the file has been rotated.

HTH,
David.
-- 
 .''`.     David Ramsden <david@hexstream.eu.org>
: :'  :    http://portal.hexstream.eu.org/
`. `'`     PGP key ID: 507B379B on wwwkeys.pgp.net
  `-  Debian - when you have better things to do than to fix a system.

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