DNS Troubleshooting Using NSLOOKUP

• Check where resolver is pointing

  This is operating-system specific
  

• Use NSLOOKUP

  • DNS & BIND, Chapter 10
  • Can tell if nameserver is authoritative
  • Canít tell Primary from a Secondary
  • Available on Unix, OpenVMS, NT

    • Get a copy if youíre running Windows 95 or Mac

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