00538pamaa2200169 4500 0000027800 20100201090000.0 0130158070 005.4469 MAN QA76.76.O63 MAN 2000 MANN Linux system security : an administrator's guide to open source security tools Scott Mann and Ellen L. Mitchell. New Jersey: Prentice Hall, 2000. xxxvii, 564p.: ill.; 24cm. Linux Operating systems (Computers) Mitchell, Ellen L.