Apr 01, Tu, 2008 (Lecture 14): We finished our discussion on Kerberos (our focus was on
use of authenticators to address replay attacks and inter-realm authentication). We discussed
X.509, a standard for signed certificates. We also covered the idea of "chain of certificates" when
there isn't a trust relationship between the two entities. We also covered the authentication
protocols associated with X.509
Apr 03, Th, 2008 (Lecture 15): This lecture was on firewalls and was delivered by our
guest lecturer David Parter. Slides can found here.
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