TY  - BOOK
ED  - NIIT                                                                                                                                                                                                                                                           . 
TI  - Basics of network security, firewalls, and VPNs / 
SN  - 9788120324107:
U1  - 005.8 NII/B 21
PY  - 2003/// (rep.2005)
CY  - New Delhi : 
PB  - Prentice Hall of India , 
KW  - VPNS
KW  - NETWORK SECURITY
N1  - Includes glossary
ER  -