I recently acquired a D-Link DNS-323 NAS which I have behind a D-Link DIR-655 Router. Although I’m using it primarily for back-up, I would also want to access files while I’m on the road. But I’m a bit concerned about the risks associated with opening up a port on the router. The NAS reportedly has the ability to use FTP over SSL/TLS, but I’ve been unable to use it successfully. (Based on what I’ve read on the D-Link user forum, neither has anyone else.) So, there is a risk of an unencrypted password being picked up. If that problem was addressed, I would still be concerned about having a port open. Would a lengthy password of random letters, digits and symbols offer sufficient protection? Are there other ways to compromise a router and get past a good password? Or am I just overly anxious about the risks posed by keeping a port open?