Tibbs, Richard W. <br/><br/>
Firewalls and VPNs :  principles and practices / 
Richard W. Tibbs, Edward B. Oakes 
 - Upper Saddle River, N.J :  Pearson Prentice Hall,  2006 
 - 442 p. :  ill. ;  24 cm 
 - Security series .
<br/><br/><label>ISBN: </label>0131547313 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer security<br/>Computer networks--Security measures<br/>Firewalls (Computer security)<br/>Extranets (Computer networks)