Frightfully sorry for the super basic Q--I'm just trying to figure out if it makes sense for me to start up the (steep for me) learning curve here. My goal is to run a vaultwarden instance on my local network. I've installed that as an 'app' on a truenas server & it refuses to work over plain http. I (today anyway) have NO ambition to expose this thing to the larger internet. Is LE useful for getting a cert my app can use for that, just inside my home network? Are there easier ways?