John Both are Network Access Control Application and both have different features set. It is difficult to find or provide the difference between the two.In the market today we have
Avenda eTIPS, Enterasys NAC, HP ProCurve Identity Driven Manager, Juniper UAC, and to a lesser extent, Microsoft NAP and Symantec NAC.
If you have any Question about the Windows NAP , you can check the
Network Access Protection FAQ
http://www.microsoft.com/windowsserver2008/en/us/nap-faq.aspx
If there are any specific question regarding SNAC, post the question we would try to answer them. Mudit and Vikram have already given you basic of SNAC
I think I got what you were looking for
IT Security compares the leading network access control (NAC) vendors.
Download this comparison now to find out about
- Pricing
- Availability
- Supported switches
- Appliance/Agent-based systems
- and more.
Fill out the form on the right to access this comparison guide.
http://www.itsecurity.com/comparison-guides/nac-vendor-comparison/
The pdf has comparision of 29 NAC products accept the MS NAP :)