Thoughts on securing OctoPrint in keeping with Hass.io w\LetsEncrypt&DuckDNS

Configuration
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So, I have Hass.io setup for remote access with the Let’sEncrypt\DuckDNS addon…

…is there an easy way to (ie: beginners guide) secure OctoPrint ‘under the same umbrella’ so to speak?

Octo and Hass are on separate dedicated RasPi’s.