Hi, I am running suricata in IPS mode. I have just one simple rule, which is to alert me of any ip traffic. The rule is triggering fine. However, all of my tcp packets are being dropped. I am not sure why this is happening.

So I solved the problem by setting drop-invalid to no in the stream settings in suricata.yaml. I am not sure why it was considering the packets to be invalid because I generated them using hping3, and they seem fine.

Suricata in IPS mode dropping tcp traffic

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cs.lev (cs.lev) April 17, 2024, 8:34am 13

Found solution here

The key was to set the exception-policy from auto to either ignore or bypass.

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Suricata in IPS mode dropping tcp traffic

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