2FA questions

If I turn on 2FA with trusted networks:

First off will I need to still 2FA when under my trusted network (home)?

And secondly will I have to 2FA every time when I login from externally (duckdns) or if I save login when I do it the first time will it keep me authorized on that device?

If you’re on a trusted network it won’t require 2FA. If you’re authed with duckdns you will be authed even when not on the network… it will use the same token.