@book{184239,
	author = {Tibbs, Richard W and Oakes, Edward B},
	title = {Firewalls and VPNs : principles and practices},
	publisher = {Pearson/Prentice Hall},
	year = {c2006},
	address = {Upper Saddle River, NJ},
	note = {Includes bibliographical references (p. 427-433) and index}
}