Abbreviated as NAC, Cisco's
Network Admission Control
is a set of technologies and solutions that use the
network infrastructure to
enforce
security policy compliance on all
devices seeking to access network
computing resources in order to limit damage from emerging security threats. NAC is designed to allow network access only to compliant and trusted
endpoint
devices (PCs, servers and
PDAs, for example) and can restrict the access of
noncompliant devices. NAC assesses all endpoints across all access methods,
including
LAN,
wireless connectivity, remote access and
WAN.
[Source:
Cisco Systems]
In October 2006, Cisco and Microsoft formally announced interoperability
between the Cisco Network Admission Control (NAC) and Microsoft
Network Access
Protection (NAP) solutions. Interoperability will be supported with the release
of NAP in the future version of Windows Server which is
scheduled to be available in the second half of 2007. The interoperability
architecture allows customers to deploy both NAC and NAP incrementally or
concurrently.
See also Microsoft Network Access Protection (NAP).
Also see Webopedia's "Did You Know...
All About Network Access Controls".