Northcutt, Stephen  . <br/><br/>
Inside Network Perimeter Security : The Definitive Guide to Firewalls VPNs Routers and Intrusion Detection Systems /   Textual Documents 
NULL. 
 - Delhi :   Pearson Education Inc. ,   2002. 
 - 205 ;   24*15. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Index Terms: </label>Computer Viruses 
<br/><br/><label>Dewey Class. No.: </label>005.84  / NOR