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Chapter 19. Network Security > Active Defenses: Blocking Known Methods of Attac...

Active Defenses: Blocking Known Methods of Attack

Active defense means actively resisting known methods of attack. Active defenses include

  • Firewalls and gateways to block dangerous or inappropriate Internet traffic as it passes between your network and the Internet at large

  • Encryption and authentication to limit access based on some sort of credentials (such as a password)

  • Keeping up-to-date on security and risks, especially with respect to Windows XP


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