fwknop-0.2 (07/31/2004):
    - Implemented remote username checking in encrypted sequences.
    - Added support for icmp in knock sequences.
    - Added protocol rotation option for encrypted sequences.
    - Added code for multiple SOURCE access blocks with the same source
      net/IP.
    - Added KNOCK_LIMIT access control variable to limit the number of
      times a particular knock sequence is honored.
    - Added email alerts.

fwknop-0.1 (07/08/2004):
    - Initial release.
