Kompartmentalisierung in Web-Anwendungen am Beispiel eines Projektmanagement-Systems
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Kompartmentalisierung in Web-Anwendungen am Beispiel eines Projektmanagement-Systems

Kompartmentalisierung in Web-Anwendungen am Beispiel eines Projektmanagement-Systems


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About the Book

Bachelorarbeit aus dem Jahr 2010 im Fachbereich Informatik - Internet, neue Technologien, Note: 2,0, Universität Bremen, Sprache: Deutsch, Abstract: In Zeiten des "Web 2.0" ist es für Unternehmen und öffentlichen Einrichtungen immer einfacher geworden, große Mengen privater oder anderweitig sensibler Daten anzusammeln. Bekannte Beispiele für solche Datensammlungen sind die gerade enorm wachsenden sozialen Netzwerke wie facebook oder Dienstleistungsangebote wie Google Documents. Zusätzlich lagern viele Unternehmen ihre Daten in das Netz aus und beauftragen Dienstleister mit darauf aufbauenden Geschäftsprozessen. Viele dieser zentral gespeicherten Daten sind also einem großen Personenkreis zugänglich. Der Schutz der Daten erhält daher einen immer höheren Stellenwert. Die Daten praktisch unter Verschluss zu halten ist allerdings keine Lösung. Ohne Zugriffsmöglichkeit sind Anwendungen (z.B. ein soziales Netzwerk) nicht umsetzbar. Der Zugriff muss also auf geregelte Art und Weise erfolgen können. Eine zentrale Eigenschaft solcher Systeme ist die genau kontrollierte Zugriffsmöglichkeit der einzelnen Benutzer auf den gemeinsamen Datenbestand. Ein weit verbreiteter Ansatz ist hier die Nutzung eines rollenbasierten Systems, wie es z.B. in allen gängigen Foren oder Wikis zum Einsatz kommt (Role Based Access Control (RBAC)). In staatlichen Einrichtungen wird vielfach auch das Bell-LaPadula-Modell als Möglichkeit von aufeinander aufbauenden Freigabestufen eingesetzt. Die beiden genannten Ansätze verhindern den Fluss der Daten nach unten in der Hierarchie. Daher werden sie auch als multi-level-security bezeichnet. Oftmals ist es auch notwendig, den Fluss von Daten auf einer Hierarchieebene zu unterbinden. Dies ist mit den genannten Ansätzen nicht möglich. Für eine horizontal ausgerichtete Zugriffskontrolle (multilaterale Sicherheit), welche den Fluss der Daten auch auf einer Hierarchieebene kontrolliert, sind mehrere Ansätze denkbar. Ein aus dem Bereich der Nachrichtendie


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Product Details
  • ISBN-13: 9783656048121
  • Publisher: Grin Publishing
  • Binding: Paperback
  • Language: German
  • Returnable: N
  • Spine Width: 6 mm
  • Width: 148 mm
  • ISBN-10: 3656048126
  • Publisher Date: 07 Nov 2011
  • Height: 210 mm
  • No of Pages: 92
  • Series Title: German
  • Weight: 181 gr


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