Stallings, William. <br/><br/>
Network and internetwork security :  principles and practice / 
William Stallings. 
 - Englewood Cliffs, N.J. :  Prentice Hall,  1995. 
 - xiii, 462 p. :  ill. ;  24 cm. 
<br/><br/>References : p. 449-456 
<br/><br/><label>ISBN: </label>0131800507  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures.<br/>Computer security.
<br/><br/><label>LC Class. No.: </label>TK5105.5