This tip falls into one of those "I had to spend more than 10 minutes looking for an answer" category, so it's a worthwhile subject for a quick blog post. Why Run SSH? Running SSH on Mac OS-X allows you to login to your machine remotely, and also copy file securely via SCP command to and from your Mac OS-X host. But I am behind my own $50 router/firewall. Can I still connect to my computer from outiside? Yes. Most off the shelf routers and firewalls will allow you to do two things that are needed for this: Assign a permanent IP address to your Mac on a local network (see your router documentation for more details) Create a port forwarding rule on your router. Eg - any request to port 22 on your external IP (provided by your router) can be routed to the specific IP address of your Mac. Exact specifics on this configuration are once again available in your router documentation. Most off the shelf routers support this, including basic Netgear and D-Link.