About the Authors
David Burns has in-depth knowledge of routing and switching technologies, network
security, and mobility. He is currently a systems engineering manager for Cisco, covering
various U.S. Service Provider accounts. Dave joined Cisco in July 2008 as a lead systems
engineer in a number of areas that include Femtocell, Datacenter, MTSO, and Security
Architectures, working for a U.S.-based SP Mobility account. He came to Cisco from a
large U.S.-based cable company, where he was a senior network and security design engi-
neer. Dave has held various roles prior to joining Cisco during his ten-plus years in the
industry, working in SP operations, SP engineering, SP architecture, enterprise IT, and
also U.S. military intelligence communications engineering. He holds various sales and
industry/Cisco technical certifications, including the CISSP, CCSP, and CCDP, as well as
two associate-level certifications. Dave recently passed the CCIE Security Written and is
currently preparing for the CCIE Security Lab. Dave is a big advocate of knowledge
transfer and sharing and has a passion for network technologies, especially as they relate
to network security. Dave has been a speaker at Cisco Live on topics including Femtocell
(IP Mobility) and IPS (Security). Dave earned his bachelor of science degree in telecom-
munications engineering technology from Southern Polytechnic State University,
Georgia, where he currently serves as a member of the Industry Advisory Board for the
Computer & Electrical Engineering Technology School.
Odunayo Adesina, CCIE No. 26695 (Routing and Switching), is a systems engineer with
Cisco in the U.S. commercial segment. In this role for over four years, Odunayo has
worked with commercial customers in St. Louis, Missouri, to help develop their enter-
prise network architectures, which are typically a combination of borderless, collabora-
tion, and virtualization solutions. He has more than 12 years of experience in the indus-
try and holds various industry and Cisco certifications, including the CISSP No. 54152,
CCSP, CEH, and VSP. He was one of the first few people who were CSS1 certified when
the Cisco security certification was first developed. Prior to his role at Cisco, Odunayo
worked with a large service provider as a network engineer, implementing and managing
security, routing, and switching solutions, and later as a security specialist, driving ISO
27001 compliance, developing and enforcing security policies for the enterprise. He also
worked with Cisco partners, where he implemented solutions across many industry verti-
cals. Odunayo holds a bachelor of technology degree in electronics and electrical engi-
neering from Ladoke Akintola University of Technology.
Keith Barker, CCIE No. 6783 R/S & Security, is a 27-year veteran of the networking
industry. He currently works as a network engineer and trainer for Nova Datacom. His
past experience includes EDS, Blue Cross, Paramount Pictures, and KnowledgeNET, and
he has delivered CCIE-level training over the past several years. He is CISSP and CCSI
certified, loves to teach, and keeps many of his video tutorials at
http://www.youtube.com/keith6783. He can be reached at KBarker@NovaDatacom.com
or by visiting http://www.NovaDatacom.com.
iv CCNP Security IPS 642-627 Official Cert Guide
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