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network_traffic: document that fragmented UDP packets are not reconstructed #4026

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efd6 opened this issue Aug 17, 2022 · 1 comment · Fixed by elastic/beats#33296
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network_traffic: document that fragmented UDP packets are not reconstructed #4026

efd6 opened this issue Aug 17, 2022 · 1 comment · Fixed by elastic/beats#33296

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@efd6
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efd6 commented Aug 17, 2022

In some cases we see fragmented UDP packets in packetbeat, for example when DNS responses are sent over UDP with EDNS0. Currently packetbeat does not reconstruct fragmented UDP packets, so the integration also lacks this capability. In the case of DNS monitoring, this means that large DNS responses using EDNS0 are not ingested and indexed.

This should be documented.
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Pinging @elastic/security-external-integrations (Team:Security-External Integrations)

@paulrossmeier paulrossmeier mentioned this issue Sep 7, 2022
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@efd6 efd6 mentioned this issue Oct 12, 2022
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packetbeat/decoder: reconstruct IPv4 fragments efd6/beats
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