William Stallings  <br/><br/>
Network Security essentials 

 - 4th Edition  
 - New Delhi:  Pearson education services Inc,   2012. 
<br/><br/><label>ISBN: </label>9788131761755 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Network Security essentials
<br/><br/><label>Dewey Class. No.: </label>005.8  / STA