Thomas, Tom <br/><br/>
Network security first-step/ 
by TomThomas 
 - Indianapolis  Cisco Press  2004 
 - xxi, 456 p.;  ill. 
<br/><br/> Includes glossary and index 
<br/><br/><label>ISBN: </label>9781587200991 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures
<br/><br/><label>Dewey Class. No.: </label>005.8