Hardening Linux / 
John H. Terpstra ... [et al.] 
 - New York:  McGraw-Hill,   2004 
 - xxxii, 404 p.:   ill.;   23 cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0072254971 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Linux<br/>Computer security<br/>Operating systems (Computers)<br/>Computer networks--Security networks