Okay - I have Turnkey MediaWiki up and running, and, thanks to a helpful poster here, I am able to access it from the outside world (i.e. outside my router/firewall). Before I go all willy-nilly advertising my new wiki to god and everybody, I assume there are some security-related setup tasks that I should take care of. TKMW installation went so fast and easy that I don't recall having to set access control levels, or add users, or anything like that. Seems like I had to enter one password, and bam! Installation complete (actually a compliment to the TK folks - this really is brain-dead simple).
Just wondering about any 'best-practice' sort of ideas for setting things up securely. As always, thanks in advance for any advice you can offer.