title: Limit some url(i mean controller) to same local network user only
body: <p>The system need to be access by two kind of person . local user (use that is in local network) and public user (user that access with domain name) How do i make my rail app to limit some of my url that access to controller for the public user? </p>
  
  <p>Using two rails with same mysql database but different port and port forward one only? 
  Limit some url to local user only? 
  use apache instead of mongrel?
  But how?</p>