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

 - 6th ed. 
 - Noida :  Pearson India,  2019. 
 - 461p. ;  00 cm. 
<br/><br/><label>ISBN: </label>9789352866601 
<br/><br/><label>Subjects--Personal Names: </label><br/>Information Technology
<br/><br/><label>Subjects--Topical Terms: </label><br/>COMPUTER SCIENCE.
<br/><br/><label>Dewey Class. No.: </label>005.8  / STA