TY  - GEN
AU  - Johnston,Alan B.
AU  - Piscitello,David M.
TI  - Understanding Voice over IP security
SN  - 1596930500
U1  - 005.8 
PY  - 2006///
CY  - Boston, MA
PB  - Artech House
KW  - Internet telephony
KW  - Security measures
KW  - TCP/IP (Computer network protocol)
ER  -