Identifying Queries From Default DNS External Resolvers For OCI-Classic External Compute Service Instances
(Doc ID 2430538.1)
Last updated on MAY 02, 2019
Applies to:Oracle Database Cloud Service - Version N/A and later
Oracle Compute Cloud Service - Version N/A and later
Java Cloud Service - Version N/A and later
Information in this document applies to any platform.
Trying to identify external DNS resolution traffic coming from Oracle Cloud Infrastructure Classic (OCI-C) Compute-based service instance VM (e.g. Compute, DBaaS, JCS) cannot be made with confidence just from within the instances.
Failure to completely identify traffic originating from OCI-C Compute instances using source IP addresses, and the method chosen to identify traffic for traffic steering, can lead to unexpected results (sometimes answered correctly, sometimes not) if having DNS horizons.
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