dropped by fw_tcp_state_verification Reason: SYN o...

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Hi All,

We are getting below error intermittently.

dropped by fw_tcp_state_verification Reason: SYN on established conn response;

Gaia OS: R80.10 on gateway and management server both.

Please give me the reasons behind this issue and please check screenshot for the reference.

Thank You,

29 KB

1 Reply

From similar cases I found it seems that he the message "Dropped by fw_tcp_state_verification Reason: SYN on established conn response" is because the Security Gateway received SYN packet on the connection that already existed, so when it was resent the SYN packet was dropped.