I'm a little confused on my results. I'm getting an actual website with data on it, not a 404. However, in one of the data boxes on the site, I get "HTTP/1.1 404 Not Found".
Specifically, on the right side of the screen there are two boxes. The top one is titled "Open Ports", and lists a single port in it, 7547.
But the box below that is titled "// 7547 / TCP /". In that box is the text "HTTP/1.1 404 Not Found".
So..., am I leaking port 7547, or not? (Fwiw, http://portscan.me/ doesn't find any leaked ports, and sees my host IP as offline).