DNSCrypt lets you encrypt DNS queries between the computer and the OpenDNS DNS servers, which protects the machine from Man-in-the-Middle attacks.

The article this tutorial is based on is at the following link. To install dnscrypt on Debian, download the package from the Github (broken link) repository.

Run dpkg:

#dpkg -i dnscrypt-proxy_0.9_i386.deb

Start the dns proxy as a daemon:

#dnscrypt-proxy --daemonize

Edit the wireless connections; in this case the network the computer connects to is wireless:

Select the wireless network and edit its settings:

Select the IPv4 Settings tab, in the method select Automatic (DHCP) addresses only, and enter the IP 127.0.0.1 in DNS servers:

To verify that the OpenDNS DNS servers are being used, open the browser at the URL http://www.opendns.com/welcome :

The communication with the OpenDNS servers is now encrypted.

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