Johnston, Alan B. , <br/><br/>
Understanding voice over IP security / 
Alan B. Johnston, David M. Piscitello. 
 - xvii, 261 pages :  illustrations ;  24 cm. 
 - Artech House telecommunications library .
<br/><br/><label>ISBN: </label>9781596930506 1596930500 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony --Security measures.<br/>TCP/IP (Computer network protocol) --Security measures.
<br/><br/><label>LC Class. No.: </label>TK5105.8865   / .J63 2006