TY  - BOOK
AU  - Cheswick, William R.
AU  - Bellovin, Steven M.
AU  - Rubin, Aviel D.
TI  - Firewalls and Internet Security Repelling the Wily Hacker 
SN  - 812970207X
U1  - 005.8 
PY  - 2003///
CY  - Delhi : 
PB  - Pearson Education, 
KW  - Firewalls Computer Security
N1  - YY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/81-297-0207-X.pdf
ER  -