We would like to have put a File Server in DataCentre to allow user to upload/download files when they are home. Since we have hundreds of users and would like to let the user to authenticate with the existing AD in our office.
Basically, I will setup the IIS server to allow users to list various directories in the File Server based on their user group. For example, Group A will have list the D:\Files\A and the Group B will have list the D:\Files\B ...etc.
After some initial study, I found that the PPTP based Site to Site VPN might fit our need to do the authentication part but I still don't have any idea on how to let them upload files to the server.
Is there any suggestions such as any better option to do this (either authentication or upload part) or any area I need to be careful of?
Thank you in advance.