Troubleshooting Virtual Private Networks (VPN)
Mark Lewis, CCIE No. 6280, is technical director of MJL Network Solutions (www.mjlnet.com), a leading provider of internetworking solutions that focuses on helping service provider and enterprise customers to implement cutting edge technologies, deploy security solutions, and optimize their networks, as well as providing them with advanced training. Mark specializes in VPN technologies and has many years of experience designing, implementing, and troubleshooting IP networks. Mark is also a certified Cisco Systems instructor.