ssh "remote host identification has changed"

dave`2005 · 06-23-2006, 02:52 PM

Hi all, when trying to connect to this pc from my laptop using ssh i get:

Code:

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@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
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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
0a:ba:c7:69:bc:45:6e:a3:15:65:b3:c9:55:ac:7c:73.
Please contact your system administrator.
Add correct host key in /home/abc/.ssh/known_hosts to get rid of this message.
Offending key in /home/abc/.ssh/known_hosts:2
RSA host key for 24.67.216.219 has changed and you have requested strict checking.
Host key verification failed.

Ive tried deleting the .ssh folder on both machines but i get the same thing. How do i fix this?

Any help appreciated.

MensaWater · 06-23-2006, 03:08 PM

Take it out of the known_hosts file under .ssh of the originating user. Of course you should first be sure the machine you're hitting is the one you think it is.

hockeyman_102 · 06-23-2006, 03:27 PM

jlightner has the quickest fix. Your computer thinks that ip address should have a different RSA associated with it. you can edit the /home/abc/.ssh/known_hosts:2 file and take out that IP or just completely remove the file. By removing the file your computer will ask you if you if its okay to connect with even old ssh connections.

katayamma · 06-23-2006, 04:21 PM

You should contact the owner/admin of the remote machine to verify that the key change was on purpose. Such changes can indicate that the machine's been compromised, usually by an SSH demon that logs usernames/passwords and passes them upstream to the hacker.

If the machine has been compromised and you use a "common password" for that machine and others, I'd go about changing them all just to be paranoid.

Cheers