Posture Assessment
Besides user authentication, authorization in NAC can be based upon compliance checking. This posture assessment is the evaluation of system security based on the applications and settings that a particular system is using. These might include Windows registry settings or the presence of security agents such as anti-virus or personal firewall. NAC products differ in their checking mechanisms:
- 802.1x Extensibile Authentication Protocol
- Microsoft Windows AD domain authentication - login credentials
- Cisco NAC Appliance L2 switch or L3 authentication
- Pre-installed security agent
- Web-based security agent
- Network packet signatures or anomalies
- External network vulnerability scanner
- External database of known systems
Read more about this topic: Network Admission Control
Famous quotes containing the words posture and/or assessment:
“The Dada object reflected an ironic posture before the consecrated forms of art. The surrealist object differs significantly in this respect. It stands for a mysterious relationship with the outer world established by man’s sensibility in a way that involves concrete forms in projecting the artist’s inner model.”
—J.H. Matthews. “Object Lessons,” The Imagery of Surrealism, Syracuse University Press (1977)
“The first year was critical to my assessment of myself as a person. It forced me to realize that, like being married, having children is not an end in itself. You don’t at last arrive at being a parent and suddenly feel satisfied and joyful. It is a constantly reopening adventure.”
—Anonymous Mother. From the Boston Women’s Health Book Collection. Quoted in The Joys of Having a Child, by Bill and Gloria Adler (1993)