Chapman, D Brent. <br/><br/>
Building internet firewalls   
by D Brent Chapman and Elizabeth D Zwicky 
 - Cambridge  O'Reilly  1995 
 - xxvi, 517p. 
<br/><br/> TRans. from CSA to ML 
<br/><br/><label>ISBN: </label>1565921240 
<br/><br/><label>Dewey Class. No.: </label>005.8  / N952