TY  - BOOK
AU  - Schwartz, Michael
AU  - Machulak, Maciej
TI  - Securing the perimeter : 
SN  - 9781484226018
U1  - 005.8 SCH 
CY  - New york
KW  - Computer networks--Access control
KW  - Computers--Access control
KW  - Open source software
ER  -