About the Technical Reviewers

Darrin Miller is an engineer in the Security Technology Group at Cisco Systems, Inc. Darrin is responsible for system-level security architecture. Darrin has worked primarily on policy-based admission and incident response programs within Cisco. Prior to that, Darrin conducted security research in the areas of IPv6, SCADA, incident response, and trust models. This work has included protocol security analysis and security architectures for next-generation networks. Darrin has authored and contributed to several books and whitepapers on the subject of network security. Darrin has also spoken around the world at leading network security conferences on a variety of topics. Prior to his eight years at Cisco, Darrin held various positions in the network security community.

Chris Tobkin, CISSP, is a consulting systems engineer for Cisco Systems, Inc., working with Enterprises within the central United States focused on security products and technologies. He has been involved with security technologies since 1996 at the University of Minnesota handling host and network security. After leaving the University of Minnesota in 2000, Chris worked for a security services and training company before joining Check Point Software Technologies as a regional technology leader in 2001. Since 2004, Chris has leveraged his industry knowledge and expertise to become a key liaison between the Cisco field engineering organization and the Security Technologies Group within Cisco Systems.