ggr

ngrep, http://ngrep.sourceforge.net

There is also a risk that people start working around the policy by using webmail such like gmail in order to patch the communication problem. Which could make the problem even worst.

Interesting, also it worth mentioning ngx_lua https://github.com/chaoslawful/lua-nginx-module It's like a swiss army knife for nginx.

would be interesting to implement a tun/tap interface that use websocket.

If you are an interesting person, you have to put yourself in a situation where you can prove it to others. Find a competition, a hackathon, sport activity or even volunteering and build something with strangers. This is how i made most of my find friends and my connections.