Stallings, William. <br/><br/>
Network security essentials :  applications and standards / 
Wil liam Stallings. 
 - 4th ed. 
 - Boston :  Pearson Education, Inc.   c2011. 
 - xiv, 417 p. :  ill. ;   24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780136108054 (alk. paper) 0136108059 (alk. paper) 9780137067923 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks-- Security measures.<br/>Computer security.
<br/><br/><label>Dewey Class. No.: </label>005.8