TY  - BOOK
AU  - Vacca, John, R. Ellis, Scott, R 
TI  - Firewalls 
SN  - 81-312-0340-9 
U1  - 004.65 VAC  
PY  - 2006///
CY  - Elsevier 
PB  - London 
KW  - COMPUTER NETWORK
ER  -