TY  - BOOK
AU  - Vacca, John R.
AU  - Ellis, Scott R.
TI  - Firewalls: jumpstart for network and systems administrators
SN  - 8131203409
U1  - 005.8 
PY  - 2005///
CY  - New Delhi
PB  - Elsevier
KW  - Burglary protection; Computer security; Electronic security systems
ER  -