Cheswick, William R. (et al) <br/><br/>
Firewalls and internet security  

 - 2nd ed . 
 - Pearson  New Delhi  2006 
 - xx, 433 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>001.5436 Che