Re: ssh fingerprint mismatch for one single client
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
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