On one particular setup, we have work in progress to synchronize the content of a hosting center into specific destination. Basically, we need to keep a mirror on files on disk, among specific things, for some specific directories and their sub directories. As in any hosting center environment, there is also a firewall. I am interested to know about how you are doing it, and if this is a pull from the outside or a push from the inside. We assume those who are doing it probably have some kind of daily process(es) for taking care of such synchronization. That is extremely useful for synchronizing QA environment, among other things, which would probably sit outside of such hosting center.