TY  - BOOK
AU  - Stallings, William.
TI  - Network security essentials: applications and standards 
SN  - 9789352866601
U1  - 004.6 
PY  - 2000///
CY  - Delhi : 
PB  - Pearson Education
KW  -  Network security
KW  - Cryptography
KW  - Network security
ER  -