Stallings, William <br/><br/>
Network security essentials 

 - 4th ed. 
 - Noida  Pearson India Education  2018 
 - xiv, 417 p. 
<br/><br/> 2907 03/11/2017 HBD17/7078 07/11/2017 Main Budget 
<br/><br/><label>ISBN: </label> RS699 
<br/><br/><label>Dewey Class. No.: </label>005.8 S18N(4)