When your proxy server is configured on a tier application, you still need to configure Visual Studio on the client side to connect to it. But do not worry, this is a step of a few seconds. Simply go to the Tools/Options menu in the editor, open the Source Control section, and select Visual Studio Team Foundation Server. This gives you access to TFS options including proxy options (Figure 1).
Check the box specifying the use of the proxy and specify the address of your server and the port used (8081 by default). You can also enable SSL mode via the second proxy box. Easy isn’t it ?