I'm looking for a way to let some users within a LAN to share files among themselves through a centralized repository.
Currently, we've been using Dropbox for this purpose, but the storage space provided to free accounts is quite limited. Moreover, it doesn't make much sense to send files across the internet throughout god knows where in the world just to make a file available to a computer connected to the same LAN and located right next to the sender.
As an alternative, the first thought that came to mind was to set up a FTP server. As I have no experience setting up a file sharing server, let alone a FTP server, don't know where to start or even if this is the best way to offer this sort of service.
This service should make files available to linux and windows users, and it should limit access to only a set of authorized users.
For a newbie, does anyone know what's the best way to set up a file server on an Ubuntu installation?