1. Prerequisites
You need to have PuTTY installed.
You need to have a public/private key pair already generated.
The public key needs to be installed on your device (TrueNAS Scale)
2. Configure PuTTY to use public/private key authorization.
Start Putty and enter the IP address (or hostname) of your device. Then in the left pane click on the + sign next to SSH to open it up. Do the same with the + symbol next to Auth. This will open up Credentials. Use the file browse to link to your private key file. Now scroll back up to Sessions in the lefthand pane and select it. Enter a name for your device in Saved Sessions and click Save.
3. Testing the SSH connection
Either click Open or double click directly on the name of the device you want to connect to. If the connection initiates successfully and this is the first time you have connected to the device youe will recive a warning.
As we know this is not a risk click Accept. You will then be prompted to enter the user name (and Passphrase for your private key if you entered one.)
