TY  - BOOK
AU  - Stallings,William
TI  - Network security essentials: applications and standards 
SN  - 9788131761755
U1  - 005.8 21
PY  - 2011///[reprinted 2013]
CY  - Delhi
PB  - Pearson Education
KW  - Computer networks
KW  - Security measures
KW  - Computer security
N1  - Includes bibliographical references and index
ER  -