June 2018
Beginner
164 pages
3h 31m
English
In order to standardize and harden the authentication process and introduce a few elements of accountability and non-repudiation, WPA offers the configuration of an external server to validate and authorize STAs. This centralized authentication and validation unit is termed as a RADIUS/TACACS server. Before the four-way handshake takes place, the RADIUS server and the access point are supposed to go through a MSK. Let's have a look at the following diagram:

Post the exchange of the master key, the pairwise master key is created and passed on to the AP, which will further complete the four-way handshake process.
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