Thomas Porter CISSP CCNP CCDA CCS <br/><br/>
Practical VoIP Security 

 -  Syngress  2006 
<br/><br/><label>ISBN: </label>9781597490603 
<br/><br/><label>Subjects--Topical Terms: </label><br/> General<br/> Security <br/>Computer networks--Security measures.,Internet telephony--Security measures.<br/>COMPUTERS