DNS Servers Are Targets

• Problems:

  • Increasingly, would-be intruders are targeting infrastructure elements including DNS servers
  • CERT Coordination Center has handled many intrusions where the DNS host has been compromised
    • one incident last week had 4 DNS servers compromised

• Solutions:

  • DNS service should have a dedicated host
  • Provide good host security
  • Checksum your tables using MD5

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