2 - Use the squid proxy for SFTP connections to the outside 3 - Able to operate in "hybrid-mode" i.e. we connect to the proxy via SFTP but then the proxy server will connect to specific sites via FTP.

So recently on my travels I was a litle frustated by the locale's strict policy on some standard apps. I've got a nginx reverse proxy sitting in my DMZ which I use for anything I need to be accessed ...