[Haskell-cafe] Happstack basic question

Hello haskellers, I want to host a simple happstack application behind a reverse proxy. So ideally would be to bind it to localhost only. According to http://hackage.haskell.org/packages/archive/happstack-server/0.4.1/doc/html/... Conf datatyle has only Port field. Does it mean, there is currently no way to prevent binding happstack to all available interfaces? Regards, Dmitry