Hi Michael,
Thanks for the reply. Sorry I didn't clarify my question regarding Active Directory Federation Services,
I am looking for alternatives to Microsoft certificate support, third-party solution that provide strong authentication and integrate with Microsoft technologies. To varying degrees, all of the AD FS remote access alternatives can be integrated with third-party strong authentication solutions.
One of the more popular third-party two-factor authentication solutions is RSA SecurID.
I am interested to know and see if NAC supports this feature.
Thanks
Suhail