Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #227157

Re: ssh fingerprint mismatch for one single client

Show all headers | View raw

	Hi.

On Sun, Sep 20, 2020 at 10:40:35AM +0200, tomas@tuxteam.de wrote:
> On Sat, Sep 19, 2020 at 06:28:29PM -0300, Beco wrote:
> > Dear linuxers,
> > 
> > I've a server and one of my students is getting a wrong fingerprint when
> > trying to connect via SSH.
> 
> Lots of wild guessing and we still don't know the problem. There are
> different fingerprints involved, so we don't know exactly what "a
> wrong fingerprint" means.
> 
> Could yout student just try
> 
>   ssh -v <user@yourserver>
> 
> (Or whatever "verbose" equivalent there is for his ssh client) and
> post the results (suitably edited, to hide sensitive information!)
> here?
> 
> My hunch is that this student's ssh client picked at some time the
> wrong host key and is now complaining, but that's only a hunch!

A better idea. Does the student in question even connects to the server?

tcpdump -pni any tcp port 22

Should answer this.

BTW, is the server in question public? I.e. can any of the list members
connect to it and find out for themselves that's a good fingerprint
looks like?

Reco

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

ssh fingerprint mismatch for one single client Beco <rcb@beco.cc> - 2020-09-19 23:30 +0200
  Re: ssh fingerprint mismatch for one single client Lucas Castro <lucas@gnuabordo.com.br> - 2020-09-19 23:50 +0200
    Re: ssh fingerprint mismatch for one single client Beco <rcb@beco.cc> - 2020-09-20 00:40 +0200
  Re: ssh fingerprint mismatch for one single client mick crane <mick.crane@gmail.com> - 2020-09-20 00:00 +0200
    Re: ssh fingerprint mismatch for one single client Beco <rcb@beco.cc> - 2020-09-20 00:50 +0200
      Re: ssh fingerprint mismatch for one single client mick crane <mick.crane@gmail.com> - 2020-09-20 05:40 +0200
      Re: ssh fingerprint mismatch for one single client David Christensen <dpchrist@holgerdanske.com> - 2020-09-20 08:00 +0200
  Re: ssh fingerprint mismatch for one single client Reco <recoverym4n@enotuniq.net> - 2020-09-20 10:50 +0200
    Re: ssh fingerprint mismatch for one single client Beco <rcb@beco.cc> - 2020-09-20 19:10 +0200
      Re: ssh fingerprint mismatch for one single client Beco <rcb@beco.cc> - 2020-09-20 19:20 +0200
      Re: ssh fingerprint mismatch for one single client Reco <recoverym4n@enotuniq.net> - 2020-09-20 19:30 +0200
      Re: ssh fingerprint mismatch for one single client Fabien Roucaute <fabien.roucaute@free.fr> - 2020-09-20 20:40 +0200
      Re: ssh fingerprint mismatch for one single client tomas@tuxteam.de - 2020-09-21 09:20 +0200
        (solved) Re: ssh fingerprint mismatch for one single client Beco <rcb@beco.cc> - 2020-09-23 02:00 +0200
  Re: ssh fingerprint mismatch for one single client <tomas@tuxteam.de> - 2020-09-20 10:50 +0200

csiph-web