Experience with Forefront products?

Hi!

Do you have any experience at all with MS Forefront products? We have a small company network with an SBS 2008 and sharepoint services and are looking for a way to secure our network and information?

Question: Where do you suggest that all secret executive information is stored? On file server with certain NTFS-rights or in sharepoint? The information needs to be accessible from the internet since these people travel lots and need to have the office "in the pocket" so to speak. I have no experience setting this up. I have thought about creating a VPN, but I hope sharepoint or sbs2008 has something else to offer?

kind regards
Henrik