I'm behind a corporate network with an HTTP proxy. I also have an SSH server to reach on port 22. I don't have any kind of control over that server: I'm not root and even if I were I'm not allowed to ...
On my university the internet is very fast but almost everything is blocked by fortiguard, and the only allowed sites are wikipedia and facebook, I discovered that the only open ports are port 80 ...
Situation. ... +-- Computers (to the internet) | | - [ router / firewall ] -- [ switch ] +- [ switch ] -+-- ...