Sniffing a windows domain authentication

[spambox () barrossecurity com]

Hello list!
Sometime ago I was wondering if it is possible to
capture the authentication packets sent from a Windows Workstation to the PDC and then crack the password. I've setup 
this scenario in the lab environment and sniffer these packets, but did'n find any referece about cracking the 
password.. Any   one knows how the authentication works, and if it can be broken??

best regards

Carlos Barros
http://www.barrossecurity.com/

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