Thank you, boresha. However, my question was not about FTP configuration, but about remote synchronization. I try to explain again: I have my web site files at my laptop and I have uploaded them at heliohost. Then I change some of these files at my laptop and in order to commit these changes at heliohost I see two possibilities:
1. Find all the files I have changed at my laptop and copy them at heliohost using ftp/sftp/web disk client.
2. Copy the total web site at heliohost overwritting the old files.
However, both of these ways are not convenient, as in the first case I have to remember exactly which files I have changed, and in the second case... it's just waste of traffic + it does not delete automatically the files I have possibly deleted at the local computer. So, what people usually use in this case is a remote synchronization tool. It compares the local and remote files and sends only the difference between them. I suppose that one of the most popular remote synchronization tools is rsync (http://rsync.samba.org), so I am wondering whether it is possible to use it at heliohost or not. I think it would be useful for many users.