Hooper, Howard. <br/><br/>
CCNP security VPN 642-648 offical cert guide / 
 CCNP security VPN six hundred and forty-two--six hundred and forty eight official cert guide 
Howard Hooper. 
 - Indianapolis, IN :  Cisco Press,  c2012. 
 - xxxi, 799 p. :  ill. ;  24 cm. +  1 CD-ROM (4 3/4 in.) 
<br/><br/><label>ISBN: </label>9781587204470 (hardcover : alk. paper) 1587204479 (hardcover : alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Extranets (Computer networks)--Examinations--Study guides.<br/>Computer networks--Security measures--Examinations--Study guides.<br/>Telecommunications engineers--Certification--Study guides.
<br/><br/><label>LC Class. No.: </label>TK5105.875.E87  / H667 2012