802.1X

5 pts.
Tags:
802.1x
Cisco networks
NAC
What is the difference between NAC and 802.1x?  Can you implement 802.1x without NAC?  My understanding is you could implement a NAC solution not utilizing 802.1x but not the other way around. 

 

Thanks

Rick McGee 



Software/Hardware used:
CISCO
ASKED: February 12, 2010  4:20 PM
UPDATED: February 13, 2010  6:31 AM

Answer Wiki

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802.1X provides port-based authentication, which involves communications between a supplicant, authenticator, and authentication server. Port refers to a single point of attachment to the LAN infrastructure. The supplicant is often software on a client device, such as a laptop; the authenticator is a network device, such as an ethernet switch or wireless access point; and the authentication server is typically a host running software capable of speaking the RADIUS and EAP protocols.

You can implement 802.1x solution without NAC by using open standards radius servers.

Where NAC is solution which enforces your organization’s network security policies on all devices seeking network access. Cisco Network Admission Control (NAC) allows only compliant and trusted endpoint devices, such as PCs, servers, and PDAs, onto the network, restricting the access of noncompliant devices, and thereby limiting the potential damage from emerging security threats and risks. Cisco NAC gives organizations a powerful, roles-based method of preventing unauthorized access and improving network resiliency.

We are usign 802.1x authentication for all our wireless users by using microsft radius server comes with Windows 2003 server.

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