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Prevent SSH response on VR-Default

Prevent SSH response on VR-Default

Jon_P
New Contributor III

I have an X460-G2 on firmware 30.3.1.6.

I want SSH access to only be available from VR-Mgmt, so I have configured as follows:
enable ssh2 vr VR-Mgmt

If I attempt to SSH to the device using an IP that belongs to VR-Default, while I can’t log in I do get an SSH login prompt. Additionally if I use portqry to probe port 22 the port is returned as ‘listening’. The addresses in question are accessible from the internet so this is not really acceptable from a security standpoint.

I have already disabled SSH and re-enabled specifically specifying VR-Mgmt.

Firstly - how can I prevent all SSH repsonse on VR-Default? Port 22 should not be seen as open.
I do not wish to restrict access to specific IP addresses - it should be allowed from VR-Mgmt and nowhere else.

Secondly - surely this behaviour is a bug and there should be no response on VR-Default? Why would the device respond when SSH is specifically only enabled on VR-Mgmt?
 

10 REPLIES 10

Frank
Contributor II

If you do a “show config”, are there any other lines that might enable ssh?
In my configs (on 16.x), the “enable ssh vr vr-mgmt” is the only “ssh” line in the config

Note: I’m clueless about 30.x 😉

GTM-P2G8KFN