In this episode we review the OSI model. We apply it to my GCIH and security studying. We apply it to nmap and hping3. Tools that you can’t take full advantage of without understanding the OSI. We also apply the OSI to Dorothy’s firewall project.


  1. OSI Model
  2. Nmap Reference Guide  – Brief description of nmap and what it can do.
  3. hping3 An explanation of what you can do with hping