Hooper, Howard <br/><br/>
CCNP security VPN 642-648 official cert guide 
Howard Hooper 
 - USA  Cisco Press  2012 
 - 799 p. 
<br/><br/><label>ISBN: </label>9781587204470 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunications engineers--Certification
<br/><br/><label>Dewey Class. No.: </label>005.8076