TY  - BOOK
AU  - Northcutt, Stephen.
AU  - Zeltser, Lenny.
AU  - Winters, Scott.
AU  - Frederick, Karen Kent.
AU  - Ritchey,Ronald W.
TI  - Inside network perimeter security : : definitive guide to firewalls VPNs routers and intrusion detection systems 
SN  - 8178087618
U1  - 005.8 1
PY  - 2002///
CY  - New Delhi
PB  - Pearson Education
KW  - Perimeter fundamentals
KW  - Extending the perimeter
KW  - Perimeter design
ER  -