Ssh Using Public Key Authentication - Avaya ERS 2500 Technical Configuration Manual

avaya.com

7.1.3 SSH using Public Key Authentication

Using Public Key Authentication is more involved than using SSH password authentication. On
the Client, a set of keys (i.e. public/private) must be generated. DSA keys are generated as this
is the default public key cipher used by the Ethernet Routing Switch. The client‟s public key must
then be transferred to the switch using TFTP. For this configuration example, we will not enable
SSH Secure as we did in the previous SSH configuration example, but, we will disable SSH
password authentication, hence, only allowing SSH DSA key authentication.
Putty will be used as the SSH Client while Puttygen will be used to generate a DSA key.
Puttygen: Step 1 – Run Puttygen and select SSH-2 DSA key with 1024 bits and click on
Generate to create both a public and private key. The public key will be uploaded to the
switch. You will be prompted to move your mouse to create the key
Avaya Inc. – External Distribution
38