DNS Cache Snooping detected on IdM integrated DNS server

Solution Verified - Updated -


  • DNS Server Cache Snooping has been detected on IdM integrated DNS server by network security scanning tools (e.g. Nessus).


  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8 up to 8.1
  • Red Hat Identity Management (IdM) / FreeIPA
    • ipa-server-4.8.0-13 or earlier
    • ipa-server-dns-4.8.0-13 or earlier
    • bind-pkcs11

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