You read about how to create an SSH tunnel and saw that you can do the same in reverse, forwarding a port from the server to your local machine. You tried it out on a server you have access to and discovered that the port you chose isn’t opening on the outside, even though the port is allowed through the firewall. What gives?
Move this window. Go ahead, I’ll wait. Great. Now resize this window.
If you’re like most people, you moved the window by dragging the title bar and resized by dragging the edge or corner of the window. That works and all, but you have to move your mouse to the right spots, which may very well be at the opposite end of the screen, and what do you do if you find yourself with a title bar past the top of your screen?