Chapman, D. Brent. <br/><br/>
Building internet firewalls / 
D. Brent Chapman and Elizabeth D. Zwicky 
 - Sebastopol , Calif. :  O'Reilly & Associates ,  c 1995 
 - xxvi , 517 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>1565921240 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet
<br/><br/><label>Dewey Class. No.: </label>005.8  / CHA