Stallings, William. <br/><br/>
Network security essentials :  applications and standards / 
William Stallings. 
 - 4th ed., international ed. 
 - Boston, Mass. :  Pearson,  c2011. 
 - 431 p. :  ill. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780137067923 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures<br/>Computer security
<br/><br/><label>LC Class. No.: </label>TK5105.59  / S724N 2011