SSH v2 or SSH v1.99

Unanswered Question
Apr 27th, 2009


I would like to know if the following IOS version only supports ssh v.1.99 or if it supports true ssh v.2.

The IOS is 12.4(13r)T

Our Nessus scans continue to kick back the vulnerability due to the 1.99 option which allows version 1 ssh connections. I believe we may have purchased the incorrect IOS image for the router.

If not, how do I allow the router to only accept version 2 connections?

ip ssh version 2.0 at the CLI continues to report back as v1.99



I have this problem too.
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rkcontrol Fri, 05/01/2009 - 23:53


I think U have made the correct selection of IOS,

We do have the same IOS Version 12.4(13r)T, and this support SSH V2.

R01#sh ssh

Connection Version Mode Encryption Hmac State

514 2.0 IN aes256-cbc hmac-sha1 Session started

514 2.0 OUT aes256-cbc hmac-sha1 Session started

%No SSHv1 server connections running.

R01#sh ip ssh

SSH Enabled - version 1.99

Authentication timeout: 60 secs; Authentication retries: 3


ouajih.ouaja Sat, 05/02/2009 - 13:33

hi tim

try this command : ip ssh version 2 in global config.

it will allow only ssh v2.




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