@book{3595,
	author = {Tibbs, Richard W. and Oakes, Edward B.},
	title = {Firewalls and VPNs :},
	publisher = {Pearson/Prentice Hall,},
	year = {c2006.},
	series = {Security series ,},
	address = {Upper Saddle River, N.J :},
	note = {Includes index.},
	url = {http://catdir.loc.gov/catdir/toc/ecip0512/2005012530.html}
}