Basics of network security firewalls and VPNs 

 - New Delhi  Prentice-Hall  2003 
 - x, 294p.  23cm. 
<br/><br/><label>ISBN: </label>8120324102 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DATA SECURITY
<br/><br/><label>Dewey Class. No.: </label>005.8  / BAS