00337nam a2200133Ia 4500008004100000020001500041041001200056082001100068100001500079245004900094260003600143300000800179650001600187221030s9999    xx            000 0 und d  a8131502481  aEnglish  a105.23  aN. Krawetz 0aIntroduction Network Securitycby N. Krawetz  bThomson  LearningaBostonc2007  a583  aBE Computer