Carr, Houston H. <br/><br/>
Data communications and network security / 
Houston H. Carr, Charles A. Snyder 
 - Boston :  McGraw-Hill Irwin,  2007 
 - 526 p. :  ill. ;  27 cm. 
<br/><br/><label>ISBN: </label>0072976047 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures<br/>Wireless communication systems--Security measures