Allow only encrypted connections for both incoming and outgoing with rtorrent

What does encryption Do?

The RC4 encryption obfuscates not only the header but the entire stream. This means that it’s very hard for your ISP to detect that the traffic you are generating comes from BitTorrent.

Note that RC4 uses more CPU time than the plain encryption or no encryption. It is however harder to identify for traffic shaping devices

This can be achieved by modifying the .rtorrent.rc file

• Quit all rtorrent sessions
• Add / modify this line in rtorrent config file ( .rtorrent.rc located in the users home folder)  

encryption = require,allow_incoming,require_RC4

• Restart rtorrent.
• Check for E flag to all connected peers

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