I am working on a large application in team environment. We use to Team Foundation Server to control source code with VS2010.We are using LAN to connect TFS which works great i
You can definately expose TFS over the internet. TFS is basically a set of web services hosted in IIS, just make your server internet-visible and you're set.
There are some security best practices you probably want to consider though:
1) You should configure an SSL cert in IIS and connect to TFS using HTTPS (an option when connecting in VS).
2) You should place your SQL Server database on a separate machine that is not directly exposed to the internet (but is visible to the Application Tier server). SSRS should reside on the AT server, the DB and SSAS should be on the Data Tier server.