Re: How to get new RSA key in known_hosts file?
On 25/05/12 13:47, Celejar wrote:
> On Thu, 24 May 2012 20:24:49 -0700 Marc Shapiro
> <marcnshap@gmail.com> wrote:
>
>> I recently had to reinstall Squeeze on my desktop box due to hard
>> disk issues. On reinstalling OpenSSH a new key was generated. Now,
>> when I try to connect from my laptop I get the following message:
>>
>> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @
>> WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
>> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS
>> POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
>
> ...
>> 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
>> cb:fa:a3:10:3d:01:c0:e6:6a:2d:3e:59:e1:b9:4e:b8. Please contact
>> your system administrator. Add correct host key in
>> /home/marc/.ssh/known_hosts to get rid of this message. Offending
>> key in /home/marc/.ssh/known_hosts:1
>
>> How do I manually enter the rsa key, or get ssh to do so, so that I
>> can connect again?
>
> Issue 'ssh-keygen -R your_hostname_or_ip_address'
Marc has previously connected to a given address and stored a key.
That address now has another key - the correct (IMO) approach is to
delete the old key for that address (remove the 1st entry in
~/.ssh/known_hosts.
i.e. change the key stored for *that* computer.
You've asked him to change *his* key which will have no effect on the
problem (the machine he's connecting to still has a new key that differs
from the one he has stored).
>
> Then try reconnecting.
>
> Celejar
>
>
Kind regards
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