Stallings, William <br/><br/>
Network Security Essentials: Applications and Standards 

 - 4th Edition 
 - New Delhi  Pearson Education  2011 
 - 417p, 
<br/><br/><label>ISBN: </label>9788131761755 
<br/><br/><label>Dewey Class. No.: </label>005.822  / STA