How to SSH to ethernet port on Turtle?

[GMaxW]

I have done the initial config procedure on a new Turtle, which of course entails an SSH connection over USB. And that includes the update procedure.

Now I want to SSH to the turtle via its ethernet port. It's on the LAN, I can ping it, but attempts to connect via SSH (port 22) are refused (ie: not just timed out).

I have tried the firewall fixes by MonkeyMan here:

... and rebooted. But no improvement.

Could somebody post or point to the exact settings required to get this simple function to work?  Thanks.