Silvia Hagen has been in the networking industry since 1990. Today she is CEO of Sunny Connection AG in Switzerland and works as a senior consultant and analyst for many mid-size and large sized companies. Her expertise is in Directory Services and Protocol Analysis. She is the author of successful books such as 'Novell's Guide to Troubleshooting TCP/IP', published IDG Books, "IPv6 Essentials" and "Planning for IPv6", both published by O'Reilly. She presents internationally on various networking topics offers customized corporate presentations and trainings. For more details and contact information visit her website at http://www.sunny.ch.