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Task #5510

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stream (midstream): investigate - Suri drops flow but still logs second packet of the flow

Added by Juliana Fajardini Reichow 3 months ago. Updated 3 months ago.

Status:
New
Priority:
Normal
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Description

In IPS mode with stream.midstream=true, if we have a flow that is first seen
in ACK state by Suri and matches against a drop rule, Suri correctly drops the
flow, but still logs an applayer event for the second packet.

Investigated and was able to reproduce this with HTTP and SMB protos. Will add
an SV test to demonstrate.

I noticed this while working on an exception policy for midstream (#5468),
and was able to reproduce on a clean master branch as well.

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