Harris Andrea is a Senior Network Security Engineer with more than 15 years of experience, working in a leading Internet Service Provider in Europe. He graduated from the University of Kansas USA in 1998 with a B.S and M.S degrees in Electrical Engineering and Computer Science. Since then, he has been working in the Networking field, designing, implementing and managing large scale networking projects with Cisco products and technologies. His main focus is on Network Security based on Cisco ASA Firewalls, VPN technologies, IDS/IPS products, AAA services etc. To support his knowledge and to build a strong professional standing, Harris pursued and earned several Cisco Certifications such as CCNA, CCNP, and CCSP. He is also a technology blogger owing two networking blogs which he updates frequently with Cisco related technical content.