Apache / IIS Security restriction of specific web page

Hello,

I am trying to use IIS integrated with Apache/Tomcat for my organization to allow external/remote access over public internet.  The reason that I am using IIS as the “front-end” or entry-point of the website is to use the security features of IIS (along with Win2k Active Directory Authentication), because I need to restrict access to sites/pages or restrict users and because we are already using IIS on the net.  What I am trying to achieve and need assistance on is restricting access to one webpage when accessed through the IIS server URL, but allow access when using the Tomcat/Apache URL.  Therefore, I can not use NTFS permissions on the actual file.  Anyone got any ideas?

I've asked the same question under Apache, so first person with right answer post in both places and get both sets of points. I do assign partial point for collaberation as well.

Thanks,

Jonathan