Hi all folks,

As ROOT, execute

# ssh -X satimis@localhost

following warning popup

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ 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
b1:bc:0c:95:53:0f:18:5e:38:30:0e:d8:ff:b0:d8:5e.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this
message. Offending key in /root/.ssh/known_hosts:1
RSA host key for localhost has changed and you have requested strict checking. Host key verification failed.

Kindly advise how to fix it. Thanks in advance.

B.Regards
satimis

Others are doubtless more knowledgeable, but these options may work:

1. Do you have ssh2 support? It is more secure than ssh anyway. Works the same way.

2. You can remove your .ssh file. You will then be asked if you want to accept the key when you attempt to use ssh again.

Hi,

Thanks for your advice. Problem is now solved by deleting /root/.ssh/known_hosts.

I tried to read /root/.ssh/known_hosts with 'cat' and 'mc'. What I can
read are alphabetics and I can't understand their meaning.

Kindly advise which software can read its content.

Thanks in advance.

B.Regards
satimis

If I am not mistaken, those are encryption keys used to encrypt your login password when you attempt to login to a remote system, as well as verify the identity of the machine you are connecting to (kinda like pgp encyption?). I don't think there is a need for you to "read" them.

Hi,

It is for curiosity to ask this question.

Anyway thanks for your reply.

B.R.
satimis