Singh, Brijendra. <br/><br/>
Network security and management 

 - 2nd ed. 
 - New Delhi  PHI Learning   2009 
 - xii, 326P.: 
<br/><br/><label>ISBN: </label>9788120339101 
<br/><br/><label>Dewey Class. No.: </label>005.43 SIN/NET