I have two Windows 2003 servers, and I want to write a backup script on one that will copy a file to the other. What's the most idiomatic way to do this on Windows? Essentially, I'm looking for the Windows equivalent of
$ scp file.tar.gz user@host:/wherever
In response to questions: At the moment I'm only thinking about one file, a database backup. Potentially I might end up with multiple files, but I'm not that interested in rsync-like systems that track which files have changed and back up accordingly.
I'd like a solution that works with the servers on different networks, with firewalls in between. Opening up a single port on the firewall to a reasonably secure service ought not to be a problem.