Zwicky, Elizabeth D., <br/><br/>
Building internet firewalls / 
Elizabeth D. Zwicky, Simon Cooper & D. Brent Chapman ; ed. Deborah Rusell 
 - 2nd ed. 
 - 869 páginas 
<br/><br/><label>ISBN: </label>1-56592-871-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet
<br/><br/><label>LC Class. No.: </label>TK5105.875I57  / C43 2000