Vacca, John R. <br/><br/>
Firewalls : jumpstart for network and systems administrators  jumpstart for network and systems administrators  
John R. Vacca, Scott Ellis. 
 - Amsterdam ;  Boston :  Elsevier Digital,  c2005. 
 - xxx, 418 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>1555582974 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Firewalls (Computer security)
<br/><br/><label>Dewey Class. No.: </label>005.8