can anyone tell me what are the default IIS auth settings for owa?

I was getting the error as described in this thread, and eventually had to allow anonymous authentication on OWA.

http://social.technet.microsoft.com/Forums/exchange/en-US/5e8ba3c0-bf3d-4e5d-a7e0-ddc2349f5cde/owa-on-not-responding-on-all-2013-store-servers?forum=exchangesvrgeneral&prof=required

can anyone tell me what are the default IIS auth settings for owa?

Anand_N