[Freedombox-discuss] Host key verification failed.

Marco A. Calamari marcoc_maillist at marcoc.it
Fri Jul 29 06:18:21 UTC 2016


On Tue, 2016-07-26 at 21:34 +0200, euomu wrote:
> Hi,
> 
> I get the following error when I try to ssh into my freedombox.
> I didn't
> ssh into it for a few weeks and it was set to do auto-updates.
> 
> > 
> > @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
> > @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
> > @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
> > IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
> > Someone could be eavesdropping on you right now (man-in-the-
> > middle attack)!
> > It is also possible that a host key has just been changed.
> > The fingerprint for the ECDSA key sent by the remote host is
> > SHA256:xxxxxxxxxxxxxxx
> > Please contact your system administrator.
> > Add correct host key in /home/xxxxx/.ssh/known_hosts to get
> > rid of this
> > message.
> > Offending ECDSA key in /home/xxxxxx/.ssh/known_hosts:3
> > remove with:
> > ssh-keygen -f "/home/xxxxxxx/.ssh/known_hosts" -R 192.xxxxxx
> > ECDSA host key for 192.xxxxxxx has changed and you have
> > requested strict
> > checking.
> > Host key verification failed.
> 
> Does anyone know what is happening and how could I fix it? (I
> didn't
> change any keys)

My guess is that you box or the remote host changed IP
 because of the dhcp that serve it. 

Because of a correct paranoid setting, it tells you
 because the same effect can be due, as extreme
 situation, to a MITM NSA attack.

Follow the instruction after you consider the possiblities
 above.

JM2EC.   Marco

> 
> Thank you
> 
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