Keeping your site comfortably secure : an introduction to Internet firewalls /
Wack, John P.
Carnahan, Lisa J.
National Institute of Standards and Technology (U.S.)
Gaithersburg, MD : U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; Washington, DC : For sale by the Supt. of Docs., U.S. G.P.O.,
1994.
Shipping list no.: 95-0408-M.
"December 1994."
Includes bibliographical references (p. 53-54).
Computer networks
Computer security.
Internet.