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Re: SSH no longer functions after hostname change
 

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rwest at zyedge

Aug 10, 2009, 9:23 AM


Views: 9321
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Re: SSH no longer functions after hostname change [In reply to]

I hate to mention this as an option, but have you rebooted it yet?

-ryan

-----Original Message-----
From: cisco-nsp-bounces [at] puck [mailto:cisco-nsp-bounces [at] puck] On Behalf Of Jon Wolberg
Sent: Monday, August 10, 2009 12:20 PM
To: Paul Stewart
Cc: cisco-nsp [at] puck
Subject: Re: [c-nsp] SSH no longer functions after hostname change

Hi Paul-

The funny thing is this is the only switch causing problems. We changed the hostnames on over a dozen others without any issues.

I tried re-generating the keys to no avail.


Jon Wolberg
Systems Engineer
Virtacore Systems Inc.
"We Virtualize IT!"


----- Original Message -----
From: "Paul Stewart" <paul [at] paulstewart>
To: "Jon Wolberg" <jon [at] defenderhosting>, cisco-nsp [at] puck
Sent: Monday, August 10, 2009 12:17:14 PM GMT -05:00 US/Canada Eastern
Subject: RE: [c-nsp] SSH no longer functions after hostname change

Normally all we do is a "crypto key gen rsa" if a hostname changes and we
continue on... this regens the keys and stops/starts the SSH process....

Paul



-----Original Message-----
From: cisco-nsp-bounces [at] puck
[mailto:cisco-nsp-bounces [at] puck] On Behalf Of Jon Wolberg
Sent: Monday, August 10, 2009 11:53 AM
To: cisco-nsp [at] puck
Subject: [c-nsp] SSH no longer functions after hostname change

Hello-

We recently changed some of our hostnames on various legacy switches to
follow our naming convention, and after one change I can no longer SSH to
the switch.

I get the below errors on the console with debug ip ssh client running:

Aug 10 11:23:44 EST: SSH5: sent protocol version id SSH-2.0-Cisco-1.25
Aug 10 11:23:44 EST: SSH5: protocol version id is - SSH-2.0-OpenSSH_4.3
Aug 10 11:23:44 EST: SSH2 5: RSA_sign: private key not found
Aug 10 11:23:44 EST: SSH2 5: signature creation failed, status -1
Aug 10 11:23:44 EST: SSH5: Session disconnected - error 0x00

I zero'ized the old keys and re-generated as well as set the hostname back
to the original and zero'ized and re-generated to no avail. Nothing shows
up on Google and I can find no errata related to SSH access on the version
of code we are running.

Has anyone encountered this before? This is a 3750 running 12.2(44)SE2


Jon Wolberg
Systems Engineer
Virtacore Systems Inc.
"We Virtualize IT!"
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Subject User Time
SSH no longer functions after hostname change jon at defenderhosting Aug 10, 2009, 8:52 AM
    Re: SSH no longer functions after hostname change paul at paulstewart Aug 10, 2009, 9:17 AM
    Re: SSH no longer functions after hostname change jon at defenderhosting Aug 10, 2009, 9:19 AM
    Re: SSH no longer functions after hostname change rwest at zyedge Aug 10, 2009, 9:23 AM
    Re: SSH no longer functions after hostname change paul at paulstewart Aug 10, 2009, 9:35 AM
    Re: SSH no longer functions after hostname change jon at defenderhosting Aug 10, 2009, 9:41 AM
    Re: SSH no longer functions after hostname change jared at puck Aug 10, 2009, 9:55 AM
    Re: SSH no longer functions after hostname change moua0100 at umn Aug 10, 2009, 10:41 AM
        Re: SSH no longer functions after hostname change jon at defenderhosting Aug 10, 2009, 11:09 AM
    Re: SSH no longer functions after hostname change jon at defenderhosting Aug 10, 2009, 11:15 AM
    Re: SSH no longer functions after hostname change eninja at gmail Aug 10, 2009, 12:49 PM
        Re: SSH no longer functions after hostname change jon at defenderhosting Aug 10, 2009, 12:56 PM
    Re: SSH no longer functions after hostname change tony at cambiumdata Aug 10, 2009, 4:25 PM
    Re: SSH no longer functions after hostname change zivl at gilat Aug 10, 2009, 11:56 PM

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