Williams R. Cheswick <br/><br/>
Firewalls and Internet Security 

 - 2nd ed. 
 - London  Addison-Wesley  2003 
 - 433 p 
<br/><br/><label>ISBN: </label>020163466X 
<br/><br/><label>LC Class. No.: </label>TK 5105.875.157C44/