Hucabay, David. <br/><br/>
CCNP security firewall 642-617 official cert guide / 
David Hucabay, Dave Garneau, Anthony Sequeira. 
 - Indianapolis, Ind. :  Cisco Press,  2012. 
 - xxix, 738 pages :  illustrations ;  25 cm. + 1 CD (4 3/4 in.) 
<br/><br/><label>ISBN: </label>9781587142796 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing--Certification--Study guides.<br/>Firewalls (Computer security)--Examinations--Study guides.