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тАО04-01-2009 03:06 AM
тАО04-01-2009 03:06 AM
SFTP from AIX to VMS failed : Host key verification failed
we did VMS upgradation from V7.3-2 to V8.3 on existing system disk.
1.Old sftp setup was working On V7.3-2.
2.After upgrdation to V8.3 AIX system not able to connect to VMS server thru SFTP and giving below error-
"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ 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 DSA host key has just been changed.
The fingerprint for the DSA key sent by the remote host is
34:fa:db:7c:af:b6:b1:ac:4a:97:23:e7:59:94:63:61.
Please contact your system administrator.
Add correct host key in /home/xyz_sftp/.ssh/known_hosts to get rid of this message.
Offending key in /home/xyz_sftp/.ssh/known_hosts:4
DSA host key for node1.xyz.london.com has changed and you have requested strict checking.
debug1: boks_ssh_client_check_hostkey: DONE - returning -1
Host key verification failed.
Connection closed
I can see SSH server new file created -[TCPIP$SSH.SSH2]SSHD2_CONFIG.
Can you suggest anything needs to be done in SSH configuration end after upgrdation.
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тАО04-01-2009 03:19 AM
тАО04-01-2009 03:19 AM
Re: SFTP from AIX to VMS failed : Host key verification failed
Wim
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тАО04-01-2009 03:53 AM
тАО04-01-2009 03:53 AM
Re: SFTP from AIX to VMS failed : Host key verification failed
Is it required to generate new key at VMS side. Sam AIX server PUB key is available in VMS server.
AIX server will send the files to VMS.
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тАО04-01-2009 04:30 AM
тАО04-01-2009 04:30 AM
Re: SFTP from AIX to VMS failed : Host key verification failed
Anyway, delete the key for this host in
/home/xyz_sftp/.ssh/known_hosts:4
and retry.
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тАО04-01-2009 05:05 AM
тАО04-01-2009 05:05 AM
Re: SFTP from AIX to VMS failed : Host key verification failed
Here's the how to:
http://labs.hoffmanlabs.com/node/1116
Here are some related UI comments:
http://labs.hoffmanlabs.com/node/406
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тАО04-01-2009 07:32 PM
тАО04-01-2009 07:32 PM
Re: SFTP from AIX to VMS failed : Host key verification failed
At VMS side new directory KNOWNHOSTS.DIR and hostkeys.dir created but none of the files created under this directory.
Is it required to delete the below know_hosts file in AIX server ?
/home/xyz_sftp/.ssh/known_hosts
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тАО04-01-2009 09:13 PM
тАО04-01-2009 09:13 PM
Re: SFTP from AIX to VMS failed : Host key verification failed
> server [...]
> Is it required to delete the below
> know_hosts file in AIX server ?
If SFTP on the AIX system is complaining
about the REMOTE HOST IDENTIFICATION, then
it's probably because the remote host (that
is, the VMS system) now has a different ID
from the one stored on the AIX system.
So, yes, I'd expect that you'd need to throw
out the old ID (for the VMS system) on the
AIX system (where it's stored).
If you can edit the VMS system ID out of the
known_hosts file, then that would probably
cause less trouble than deleting the whole
file.
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тАО04-01-2009 10:51 PM
тАО04-01-2009 10:51 PM
Re: SFTP from AIX to VMS failed : Host key verification failed
I did not tell to delete a file, but
delete the key for this host (!) in
/home/xyz_sftp/.ssh/known_hosts:4
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тАО04-01-2009 11:58 PM
тАО04-01-2009 11:58 PM
Re: SFTP from AIX to VMS failed : Host key verification failed
After deleting the below file, Aix team able to do the SFTP to VMS server as they do before.
/home/xyz_sftp/.ssh/known_hosts
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тАО04-02-2009 09:29 AM
тАО04-02-2009 09:29 AM