Cisco envisions self-defending networks
Cisco Systems announced a new initiative to counter viruses, worms and other
threats. It made enhancements to its IOS software and will also introduce new
hardware and security offeringsall components of its self-defending network
strategy, designed to create an end-to-end security system. Self-defending networks
will be able to identify threats, respond according to risk level, and reconfigure
network resources where needed.
Cisco says the Self-Defending Network initiative is a multiphase security approach
that improves network capability for identifying, preventing, and mitigating
security threats. Cisco Network Admission Control (NAC), the first program announced
under the Cisco Self-Defending Network initiative, enables customers that use
Cisco network infrastructure to limit damage from viruses and worms.
Developed in conjunction with anti-virus vendors like Network Associates, Symantec
and Trend Micro, Cisco said the initiative will tackle the risks posed by mobile
and remote workers who connect to corporate networks.
The NAC essentially detects noncompliant devices, those that may harbor viruses,
and denies network access or quarantines the device until the network administrator
can correct the problem.
Using NAC capabilities, organizations can provide network access to only endpoint
devices, such as personal computers and servers that fully comply with established