http://en.wikipedia.org/wiki/Packet_analyzer

http://en.wikipedia.org/wiki/Rainbow_tables

http://safe.it168.com/a2009/0319/269/000000269010.shtml

http://rainbowtables.shmoo.com/

http://www.remote-exploit.org/

http://blog.cn-ic.org/?p=62

http://project-rainbowcrack.com/

http://www.forece.net/post/339.htm

http://www.80lr.com/news.php?id=96