TY  - BOOK
AU  - Thomas, Tom
TI  - Network security first step
SN  - 1587200996
U1  - Circ. 004.6 T462n 2004 
PY  - 2004///
CY  - Indianapolis, IN : 
PB  - Cisco Press, 
KW  - 1. Computer networks-Security measures
N1  - Includes index

ER  -