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Groups > linux.debian.user > #257315

Re: Am I infected with a rootkit?

From David Christensen <dpchrist@holgerdanske.com>
Newsgroups linux.debian.user
Subject Re: Am I infected with a rootkit?
Date 2023-04-17 03:20 +0200
Message-ID <GllHb-2x2t-1@gated-at.bofh.it> (permalink)
References <Gl9G1-2pKU-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 4/16/23 05:19, Jesper Dybdal wrote:
> I have a Debian pc functioning as router, firewall, file server, name 
> server, webserver, ...
> It has very recently been upgraded to Bullseye.
> 
> On the internal network I have a Windows 10 pc.

> And there in the bash history were 4 lines that I had not written :-(

>> md5users
>> sp md5users
>> sp /x/md5users
>> ps /x/md5users


On 4/16/23 07:30, Jesper Dybdal wrote:

 > ... I really need to be able to run ssh [on Windows to] administer
 > [the Debian] machine (which normally has neither keyboard nor
 > monitor).


What about installing a KVM switch and administering the Debian computer 
from the console?


If the two computers are separated, you could use a KVM extender and put 
the KVM switch near the Windows computer.  Or, you could get networked 
KVM equipment.


That said, using one computer as router, firewall, file server, name 
server, web server, and more represents "all of your eggs in one 
basket".  I suggest using dedicated hardware for networking, network 
segmentation (e.g. DMZ), and kernel or hypervisor compartmentalization 
of services.  Qubes looks very appealing:

         https://www.qubes-os.org/


David

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Thread

Am I infected with a rootkit? Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-04-16 14:30 +0200
  Re: Am I infected with a rootkit? Eduardo M KALINOWSKI <eduardo@kalinowski.com.br> - 2023-04-16 14:50 +0200
    Re: Am I infected with a rootkit? Michel Verdier <mv524@free.fr> - 2023-04-16 15:20 +0200
      Re: Am I infected with a rootkit? Greg Wooledge <greg@wooledge.org> - 2023-04-16 16:00 +0200
        Re: Am I infected with a rootkit? Michel Verdier <mv524@free.fr> - 2023-04-16 17:20 +0200
    Re: Am I infected with a rootkit? Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-04-16 16:10 +0200
    Re: Am I infected with a rootkit? Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-04-18 15:50 +0200
      Re: Am I infected with a rootkit? David Christensen <dpchrist@holgerdanske.com> - 2023-04-18 21:40 +0200
        Re: Am I infected with a rootkit? Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-04-19 16:00 +0200
  Re: Am I infected with a rootkit? Michel Verdier <mv524@free.fr> - 2023-04-16 15:00 +0200
    Re: Am I infected with a rootkit? Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-04-16 16:10 +0200
      Re: Am I infected with a rootkit? Jeffrey Walton <noloader@gmail.com> - 2023-04-16 16:50 +0200
      Re: Am I infected with a rootkit? Michel Verdier <mv524@free.fr> - 2023-04-16 17:20 +0200
  Re: Am I infected with a rootkit? Greg Wooledge <greg@wooledge.org> - 2023-04-16 15:10 +0200
    Re: Am I infected with a rootkit? Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-04-16 16:40 +0200
      Re: Am I infected with a rootkit? Greg Wooledge <greg@wooledge.org> - 2023-04-16 18:00 +0200
        Re: Am I infected with a rootkit? Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-04-16 18:50 +0200
          Re: Am I infected with a rootkit? Michel Verdier <mv524@free.fr> - 2023-04-16 19:30 +0200
        Re: Am I infected with a rootkit? "Thomas Schmitt" <scdbackup@gmx.net> - 2023-04-16 19:40 +0200
          Re: Am I infected with a rootkit? David Wright <deblis@lionunicorn.co.uk> - 2023-04-16 20:50 +0200
          Re: Am I infected with a rootkit? Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-04-16 22:20 +0200
      Re: Am I infected with a rootkit? Curt <curty@free.fr> - 2023-04-17 18:50 +0200
  Re: Am I infected with a rootkit? Jesper Dybdal <jd-debian-user@dybdal.dk> - 2023-04-16 16:40 +0200
    Re: Am I infected with a rootkit? <tomas@tuxteam.de> - 2023-04-16 17:20 +0200
    Re: Am I infected with a rootkit? David Wright <deblis@lionunicorn.co.uk> - 2023-04-18 06:50 +0200
      Re: Am I infected with a rootkit? David <bouncingcats@gmail.com> - 2023-04-18 07:40 +0200
        Re: Am I infected with a rootkit? <tomas@tuxteam.de> - 2023-04-18 10:00 +0200
          Re: Am I infected with a rootkit? debian-user@howorth.org.uk - 2023-04-18 13:00 +0200
            Re: Am I infected with a rootkit? <tomas@tuxteam.de> - 2023-04-18 13:10 +0200
          Re: Am I infected with a rootkit? David <bouncingcats@gmail.com> - 2023-04-18 14:10 +0200
            Re: Am I infected with a rootkit? <tomas@tuxteam.de> - 2023-04-18 14:30 +0200
              Re: Am I infected with a rootkit? songbird <songbird@anthive.com> - 2023-04-18 18:00 +0200
                Re: Am I infected with a rootkit? Michel Verdier <mv524@free.fr> - 2023-04-18 18:30 +0200
                Re: Am I infected with a rootkit? Andy Smith <andy@strugglers.net> - 2023-04-18 20:40 +0200
        Re: Am I infected with a rootkit? Jesper Dybdal <jesper@dybdal.dk> - 2023-04-18 16:00 +0200
  Re: Am I infected with a rootkit? David Wright <deblis@lionunicorn.co.uk> - 2023-04-16 16:40 +0200
  Re: Am I infected with a rootkit? David Christensen <dpchrist@holgerdanske.com> - 2023-04-17 03:20 +0200
    Re: Am I infected with a rootkit? Michel Verdier <mv524@free.fr> - 2023-04-17 17:40 +0200
    Re: Am I infected with a rootkit? Stefan Monnier <monnier@iro.umontreal.ca> - 2023-04-17 19:00 +0200
      Re: Am I infected with a rootkit? Tim Woodall <debianuser@woodall.me.uk> - 2023-04-17 20:30 +0200
  Re: Am I infected with a rootkit? Richmond <dnomhcir@gmx.com> - 2023-04-18 10:40 +0200
    Re: Am I infected with a rootkit? Jesper Dybdal <jesper@dybdal.dk> - 2023-04-18 16:00 +0200
      Re: Am I infected with a rootkit? Jeremy Ardley <jeremy@ardley.org> - 2023-04-18 16:10 +0200
        Re: Am I infected with a rootkit? Charles Curley <charlescurley@charlescurley.com> - 2023-04-18 17:00 +0200

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