If you are looking for the community server, jump to freecivweb.org. If you are not, maybe you should at least keep an eye on it.
This is just a throwaway server to play non-longturn games until the community server includes them.
Freeciv is a Free and Open Source empire-building strategy game inspired by the history of human civilization. The game commences in prehistory and your mission is to lead your tribe from the Stone Age to the Space Age. Freeciv can be played online in your web-browser for free.