Technical Guide to Ipsec Virtual Private Networks, Paperback by Tiller, James S., ISBN 0849308763, ISBN-13 9780849308765, Brand New, Free shipping in the US Though such networks have become analogous with the Internet and are widely talked about, Tiller says everyone seems to have a different idea of what they are. He attempts to provide a single description that will accommodate the various versions and visions for information security, network, and system engineers and administrators. His particular focus is automatic key management. Annotation c. Book News, Inc., Portland, OR ()