2.4 Require authentication for unrestricted source addresses?

[Guest]

[ProperSkyJeff]

Hi,
  We recently installed EFW 2.4 and are trying to set it up similar to another box running 2.2.  The 2.2 box has an option called "Require authentication for unrestricted source addresses" and I can't find a similar option in 2.4. 
  Basically it allows users to browse the filtered internet without authentication and if the user is on the user whitelist they can bypass the filtering.
  Does anyone know how to accomplish this on 2.4? Or should I dig up an ISO of 2.2?

Thanks,

Jeff