Inquiries about stream option in suricata.yaml

We used a rule(sid:2000369) to detect the following packets.

image

Detection rule
image

Detection result
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When detection was successful, the Stream option is as follows.

  • inline: yes
  • raw: yes

However, we could not detect raw or inline options if they were changed to ‘no’.

  • inline: no
  • raw: no

Options that failed to detect.
image image image

We wonder why detection is impossible when the options are changed.
Attached is the PCAP and rule we used.
sid_2000369.rules (334 Bytes)
4271.pcap (838 Bytes)