Bitmask is an open source application to provide easy and secure encrypted communication. You can choose among several different service providers or start your own. Currently, Bitmask supports encrypted internet (VPN) with encrypted email coming soon
Skype tunnel works in very similar way as well-known "TCP Tunnel/Monitor"... with only one diff: the transport for it - Skype Network.
wlan als "untrusted" markieren -> ssh-tunnel benutzen, soll gg firesheep helfen