TY  - BOOK
AU  - Stallings، William
TI  - NetWork Security Essentials: Applications And Standards
SN  - 9780137067923
U1  - 005.8 21
PY  - 2011///
CY  - u s a
PB  - pearson education
KW  - Computer networks
KW  - Security
N1  - Includes index
ER  -