SSH still work after the change hostname?

Hi all

I was under the impression (from past experiences) that SSH self-signed certificates are made up of the host name and the domain name of the router.

I worked on a network of customers and I can see that the RSA SSH certificate uses the old hostname of the device + name field but SSH works always inbound and outbound on the VTY lines!

I thought you were to related keys and recreate it using the encryption key generate rsa command to continue using SSH after a host name changed so that the new certificate contains the new host name?

Any explanation would be greately appreciated

Thank you very much

David

Hi David.

Yes after having modified the router setting hostname, SSH domain name will still work with the old certificate.

What I can suggest is you to recreate through cryptographic key generate rsa command in configuration mode.

HTH

Concerning

Carlo

Tags: Cisco Security

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