Stallings, William. <br/><br/>
Network security essentials :  applications and standards / 
William Stallings. 
 - 4th ed., International ed. 
 - Harlow :  Prentice Hall,  2010. 
 - 431 p. :  ill. ;   22 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0137067925 (pbk.) 9780137067923 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures.
<br/><br/><label>Dewey Class. No.: </label>005.8 STA