Ray Blair, CCIE No. 7050, is a Vertical Solutions Architect and has been with Cisco Systems for more than 10 years, working primarily with large network designs. He has almost 22 years of experience with designing, implementing, and maintaining networks that have included nearly all networking technologies. During the early stages of his career, he wrote many applications using Assembly language and C. Mr. Blair maintains three CCIE certifications in Routing and Switching, Security, and Service Provider. He is also a Certified Information Systems Security Professional (CISSP) and coauthor of the Cisco Secure Firewall Services Module book.