This program includes an "encryption" feature intended to protect the tunneled
data as it travels across the network. However, the protocol it uses is known
to be very insecure, and you should not rely on it to deter anyone but a casual
eavesdropper.

For more information, see:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=319449
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=212357
http://www.cs.auckland.ac.nz/~pgut001/pubs/linux_vpn.txt
http://www.mit.edu:8008/bloom-picayune/crypto/14238

-- Martín Ferrari <martin.ferrari@gmail.com>
