Synchronizing between laptop and desktop

[LeftyAce]

Hi all,

I'm interested in being able to synchronize data between my laptop and desktop over my university's LAN. Ideally, I'd have some sort of software that watched selected folders and whenever the laptop was on the network, it would periodically make sure that each computer had the most recent version of all files in those folders.
If there isn't something that will do that, I'd settle for the ability to copy and paste stuff between the two.

Here's the catch though. Whatever program/protocol I use MUST be encrypted; the university's wireless network is open, unsecured, and covers several city blocks indoors and out. So anyone with a wireless card has access, therefore I'm uncomfortable just telling windows file sharing on my desktop to share the C: drive :-)

Any suggestions much appreciated!

*EDIT* ok, I've got SFTP set up, but that's of course dependent on the use of an ftp client, and doesn't do automatic 'version checking'....it'll work fine, but if anyone knows of a nifty way to do the synchronization, I'm all ears.

[glc]

I believe SyncBack can run over FTP.

[LeftyAce]

Thanks for the suggestion, glc, it looks like SyncBack will do what I'm looking for.....but it can't handle SFTP connections. However, some more google-ing on my part turned up unison: http://www.cis.upenn.edu/~bcpierce/unison/
Which appears to do everything I need, through ssh.