Project portal on separate tier

I presume you meant to say "Windows SharePoint Services" and not "project server". If so, we currently don't support (and probably won't for v1) installing SharePoint on a separate physical computer from the Team Foundation application tier.

yes, because I've got the app- and data-tier on one machine in a secure area (with no access from outside), but now I want to allow a client to access just to the portal, which has to be outside this secure area. That's the reason why .