@book{4065,
	author = {Stewart, J. Michael and Kinsey, Denise },
	title = {Network security, firewalls, and VPNs /},
	publisher = {Jones & Bartlett Learning,},
	year = {c2021.},
	series = {(Information Systems Security & Assurance Series).},
	address = {Burlington, MA:},
	edition = {- 3rd ed. -}
}