David Capwell created CASSANDRA-16859:
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             Summary: allow blocking IPs from updating metrics about traffic
                 Key: CASSANDRA-16859
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16859
             Project: Cassandra
          Issue Type: Improvement
          Components: Observability/Metrics
            Reporter: David Capwell
            Assignee: David Capwell


It is common that network scans happen for some companies, and when these scans 
happen they will send packets to the Cassandra ports which do not match our 
protocol; when this happens we fail and increment metrics to show this.  To 
avoid these scans polluting our metrics, we should allow users to block their 
own IP subnets from updating these metrics.



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