Protecting the Enterprise Network: Layered Network Security Defense

Overview

Securing the network perimeter and prohibiting unauthorized access from within can prove to be a daunting challenge. Today's businesses must guarantee uninterrupted access to network resources. Products must be designed in their DNA to offer a high level of resiliency and security even under attack. Evolution of the enterprise and the way it does business, coupled with today's network threats, has reduced the effectiveness of traditional perimeter security. This paper describes Nortel Networks layered defense approach to network security based on the Unified Security Framework model.