TY - BOOK AU - Porter,Thomas AU - Gough,Michael TI - How to Cheat at Voip Security SN - 9781597491693 AV - TK5105.8865 .P67 2007 U1 - 004.69 22 PY - 2007/// CY - Rockland, MA PB - Syngress KW - Internet telephony KW - Security measures KW - Computer networks N1 - Includes index UR - http://www.loc.gov/catdir/enhancements/fy0742/2007298838-d.html ER -