Mason, Andrew. <br/><br/>
CCNP Security Firewall 642-617 quick reference  [electronic resource] / 
 Cisco certified networking professional Security Firewall 642-617 quick reference 
Andrew Mason. 
 - Indianapolis, Ind. :  Cisco Press,  c2011. 
 - 1 online resource (110 p.) :  ill. 
<br/><br/> Description based on resource description page (viewed Apr. 7, 2011). 
<br/><br/><label>ISBN: </label>9780132567145 0132567148 
<br/><br/><label>Source: </label>CL0500000088  Safari Books Online 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures.<br/>Firewalls (Computer security)
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Electronic books.