small office infrastructure/network

I am looking for an experienced sys-admin who can help me creating a network/infrastructure for a small office (5-20 users). There will be one dedicated server and around 5-20 users connecting to it with their notebooks. I need: -data archiving (files, e-mails) -automatic backups (files, e-mails) -file/e-mail encryption on users notebooks -secure connections (maybe VPN?) -secure chat/video conferencing -anything else (I need your suggestions/ideas here)?? Please state in your bid what exactly you propose and can do for me. I am willing to pay a small bonus for this proposal. If the proposal is good, you get the job for setting up this server with all necessary packages, ssl-ceritifcates (if needed), vpn-server and so on... So, please tell me what sort of infrastructure you propose and what kind of software packages you would suggest. If everything looks ok, you get the project. Important: I prefer free/opensource software!! Plattform will be Linux (or Unix/FreeBSD). ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform linux