TY  - BOOK
AU  - Kaufman, Charlie Perlman, Radia & Speciner, Mike 
TI  - Network Security: Private communication in a public World 
SN  - 81-7808-790-1 
U1  - 004.6 KAU  
PY  - 2002///
CY  - Pearson education asia 
PB  - Delhi 
KW  - COMPUTER NETWORK
ER  -