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dropped by fw_tcp_state_verification Reason: SYN on established conn response

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, 

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Employee++
Employee++

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. 

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