December 6, 2023 • 30 mins
In this episode of PING, Sara Dickinson from Sinodun Internet Technologies and Terry Manderson, VP, Information Security and Network Engineering at ICANN discuss the ICANN DNS stats collector system which ICANN commissioned, and Sinodun wrote for them.
This system consists of two parts, a DNS stats compactor framework which captures data in the C-DNS format, a specified set of data in CBOR format, and the DNS stats visualiser which is uses Grafana. The C-DNS format is not a complete packet capture but allows the recreation of all the DNS context of the query and response. It was standardised in 2019, in an RFC authored by Sara, her partner John, Jim Hague, John Bond and Terry.
Unlike DSC, which is a 5 minute sample aggregation system, this system is able to preserve a significantly larger amount of the seen DNS query information and can even be used to re-create an on-the-wire view of the DNS (albiet not 1 to 1 identical to the original IP packetflows)
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