kindly help me out to understand some concept of NAC as its very urgent:
1) what does actually hapens before the user provide the credentials to NAC, how DHCP handle the host either NAC give it bogus ip....etc
2)if the user is authenticated and scanned how NAC accomodate if the have any virus after it ...in inband and out-of-band both cases?
3)in OOB how server actually work on switch port, how its work, what it does ?
4)is there any alert mechanism in NAC other then profiler?
5)what benefits i have if i use guest server ?
6)is NAC detect new system by mac-address or links-up or by dhcp request ?
7)is mac spoofing for system/printer can mitigate by NAC server ?
8)can we only buy NAC software ?
9)what is the difference b/w NAC agent,trust agent and nessus ? is cca is any other agent ?
thanks in advance i hope sooner reply