Yusuf Bhaiji is the product manager for the Cisco CCIE Security certification and is the CCIE Proctor in the Cisco Dubai Lab. Previously he was technical lead for the security and VPN team in the Sydney Technical Assistance Center. Bhaiji has been with Cisco for 10 years and has 20 years of industry experience in security technologies and solutions. He is an advisory board member of several non-profit organizations for dissemination of technologies and promoting indigenous excellence. He also chairs the Networkers Society of Pakistan and the Pakistan chapter of the IPv6 Forum. Bhaiji has authored four books for Cisco Press: "Network Security Technologies and Solutions," "CCIE Security Practice Labs 1st Edition," "CCIE Security v3.0 Configuration Practice Labs 2nd Edition," and "CCIE Security Flash Cards." He has also been a technical reviewer for Cisco Press, a writer and presenter on various security technologies, and a frequent lecturer and speaker at conferences and seminars. Bhaiji holds a master's degree in computer science as well as CCIE certification #9305 (R&S and Security).