Re: man in the middle attack ?
On Tuesday 21,August,2012 04:29 AM, Dr Beco wrote:
> Dear linuxers,
>
>
> Today I registered a lot of students in the class, and 4 hours later I
> was in home and got a message one of them could not log in.
>
> So I tried and got this message:
>
>
> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
> @ 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 the RSA host key has just been changed.
> The fingerprint for the RSA key sent by the remote host is
> 66:09:66:e3:e1:54:dc:65:e4:a4:74:99:c4:df:3e:ff.
> Please contact your system administrator.
> Add correct host key in /home/beco/.ssh/known_hosts to get rid of this message.
> Offending key in /home/beco/.ssh/known_hosts:1
I met similar things many times, you may just simply
vim /home/beco/.ssh/known_hosts
delete the line 1 key there, or you may delete all.
and ssh again,
Thanks,
Best regards,
> RSA host key for beco.poli.br has changed and you have requested
> strict checking.
> Host key verification failed.
>
>
> What should I do, or where should I look, to understand this problem?
>
> Can I log in with my account remotely to see the problem, or should I
> better log in locally?
>
>
> Thanks,
> Beco.
>
>
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