Tibbs, Richard W. <br/><br/>
Firewalls and VPNs :  principles and practices / 

 - Upper Saddle River, N.J :  Pearson/Prentice Hall,  c2006. 
 - xxii, 442 pages :  Illustrations ; 
 - Security series , .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0131547313 9780131547315 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks -security measures.<br/>Computer security.<br/>Firewalls (Computer security)<br/>Extranets (Computer networks)
<br/><br/><label>LC Class. No.: </label>QA 76.9  / TIB