Free Networking Class From Stanford.
Saw it from another site:
https://class.stanford.edu/networking/Fall2012/preview/
List of free class @ Stanford
http://www.topfreeclasses.com/category/455/Computer-Science-Systems-Network-Security
Saw it from another site:
https://class.stanford.edu/networking/Fall2012/preview/
List of free class @ Stanford
http://www.topfreeclasses.com/category/455/Computer-Science-Systems-Network-Security