Thomas, Thomas M <br/><br/>
Network security first-step 
Tom Thomas 
 - Indianapolis, IN  Cisco Press  c2004 
 - xxi, 456 p. : ill. ; 23 cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9781587200991 
<br/><br/><label>ISSN: </label>2003107987 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks - Security measures
<br/><br/><label>Dewey Class. No.: </label>005.8 THO