DMZ and Firewall Issues or where to place the Infra Server

Hi,
finally, I've got a more or less working Midtier Server on United Linux. I've two machines: a Sun Box which has the Infrastructure and the storage on it in the intranet, and I've got a linux box in the DMZ with the midtier on it. Unlucky as I am in this mission, I figured out, that Portal want's to contact the Sunbox for SSO from the browser and not as I assumed from the Server Side. But the forwarded Hostname is an internal name only. Am I right, that it would be the best solution, to install the infra option (SSO etc.) on the DMZ machine as well. So, the scenario would look like this: E-Storage and files on the intranet machine (eg. Sunbox) and Infra and middle in the DMZ. Please help.
Eric

I don;t know to what end this will help you, or if it actually addresses your question - i;m a bit vague on technologies likes firwalls and dmz - save understanding their general purpose.
anyway due to hardware limitations, we have had to deploy ocs on a single node. Red HAt 7.3 (yep os limitations aswell). Anyway our general access to the internet is done via a cable connection. This connection is shared amongst our LAN via a proxy. Now, the linux server was given an ip that belongs to the cable network - its not part of our LAN. Anyway , we initially started by opening port 7778 and 7779 as these were the ports for web access - for end users. This did not work. Just like u mentioned in your post SSO access - thus we had to open port 7777. This done it all appears to run fine.
Anyway, have a search through technet, there is a paper on firewall loadbalancing - with respect to iAS - this is the technology used to deploy most of the OCS applications - i imagine this may just address a few of your questions.

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