What you see on the main page of The Outpost is a Broadcast Chat pane on the left, and a Smallest Federated Wiki on the right. The SFW is actually a completely separate NodeJS process running on Port 3000. So, the two entities are only integrated on the outermost, superficial way.
That being said, logging in on the upper right logs you into The Outpost for the Broadcast functionality. Logging in at the bottom logs the owner, me, into SFW so that I can edit my content on my wiki.
Authentication for The Outpost is in-house, and uses no password protection. It is simply an informal way for you to have a name associated with what you broadcast during your session. The SFW uses