There are already at least two ssh apps for the Pre -- their names are openssh and dropbear. If we're including jailbroken apps for the iPhone, then the Optware packages built for Pre are fair game as well.

Okay, you do need a terminal app to use them from the Pre itself, and though there's no official terminal app, folks have installed a Debian chroot on their Pres and been working on getting a couple of terminal apps working. They're not 100% yet, but it's only been a few weeks, so I'll cut 'em some slack.