I was upgrading the firmware on my wireless router and discovered that the new version has built-in support for my old favorite dynamic DNS service (dyndns.org)...well I went ahead and set it up and registered a new DDNS for my home network. I've always like the idea of being able to access my mac from anywhere, but this really made it a practical idea. (Those old DDNS scripts were pretty flaky in my experience.) So my question is, how safe is it to open up FTP & SSH to the WAN connection? OS X is supposed to be pretty solid, and in my MOTD I don't state what OS it is, only a foreboding warning to anybody who tries to crack it. FTP & SSH are the only ports being forwarded by the router, so I'm not worried about any other exploits. I'm going to keep an eye on the server logs to see what kind of traffic I get, but this is a pretty safe thing to do, right? I deleted my computer's Guest account so now my account is the only one on the computer, and I've got permissions set up to hide my home folder from anybody who isn't logged in as me. Anything else?