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Admission control adds a desperately needed leg to the security stool. It’s conceptually simple. When a device attempts to connect to a network, we examine that device to verify that it is free of malicious code before we accept a single keystroke from a user at that device. We can verify that all security measures – firewall, antivirus, antispyware, host IDS – are have all the current patches, malware and intrusion signatures, are properly configured and are operating as anticipated. If an endpoint fails to meet these criteria, we can block admission, or quarantine the endpoint to a location on our network where the user can access the resources required to bring the endpoint into compliance.