Suehring, Steve <br/><br/>
Linux firewalls / 
Steve Suehring, Robert Ziegler 
 - 3rd ed. 
 - Indianapolis, IND :  Pearson Education,  2005 
 - 533 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0672327716 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Linux<br/>Computers--Access control<br/>Firewalls (Computer security)<br/>Operating systems (Computers)