And when that proxy is worth it's salt, it shall detect attempts to tunnel plain ssh over said ports. This is 2018, anyone who can bypass their corporate proxy

And when that proxy is worth it's salt, it shall detect attempts to tunnel plain ssh over said ports. This is 2018, anyone who can bypass their corporate proxy with that example, should find employment elsewhere or atleast prepare to do so since your company's internals will surface on twitter any time now.