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By Krzysztof Janowicz

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Book Seite 23 Montag, 28. November 2005 11:21 11 Rechts Transmission Control Protocol (TCP) Wie bereits beschrieben, liegt TCP im Transmission Layer der TCP/IP-Familie. TCP ist verbindungsorientiert und verursacht daher einen sehr großen Overhead; die damit erkaufte Übertragungssicherheit macht es jedoch zu einem der wichtigsten Protokolle des Internets. So nutzen zum Beispiel der Mail-, der WWW- und der File Transfer-Dienst dieses Protokoll. All diesen ist gemeinsam, dass eine verhältnismäßig große Datenmenge übertragen werden muss und der Ausfall von einzelnen Datenpaketen den gesamten Inhalt zunichte machen würde.

Ob Sie in gewissen Situationen eine Ausnahme machen, hängt vom persönlichen Sicherheitsbedarf und dem Grad der Gefährdung ab. B. diejenigen zu einem Chat oder Forum) in der Passwortverwaltung Ihres Bowsers zu hinterlegen. 3 Programme zur Passwortverwaltung basieren im Prinzip alle auf der gleichen Idee: Das Programm speichert alle Ihre Account-Daten samt einer kurzen Info zum Verwendungszweck. Ein Master-Passwort schützt dabei vor unbefugtem Zugriff auf die eigentliche Datenbank. Die dort gespeicherten Passwörter sind stark verschlüsselt und liegen nicht im Klartext auf der Festplatte.

Linie 3 Beachten Sie dazu auch die entsprechenden Absätze in Kapitel 5, Browser – einer für alles. 36 | Kapitel 3: Sicherheitsbewusstsein This is the Title of the Book, eMatter Edition Copyright © 2005 O’Reilly & Associates, Inc. All rights reserved. Max. book Seite 37 Montag, 28. November 2005 11:21 11 Rechts Der Schutz gilt weder für das Dateisystem des Computers4 noch für eventuell im Hintergrund arbeitende Dienste. Dies bedeutet, dass die Sicherheitsmaßnahmen erst dann greifen, wenn das Betriebssystem bereits geladen ist.

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