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dnstap: High speed DNS logging without packet capture

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Published on Feb 13, 2014

Speaker:
Robert Edmonds, Farsight Security, Inc.

The DNS protocol presents interesting logging challenges. Common approaches to DNS logging include instrumentation internal to the DNS server which generates textual log messages ("query logs"), and external passive observation of DNS network traffic ("packet capture"). This presentation will outline some of the strengths and weaknesses of these two approaches and will showcase a hybrid vendor-neutral logging implementation, "dnstap", that can provide at high speed the high quality data needed for DNS monitoring applications such as passive DNS replication and query logging.

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