I am observing that tcp connection between two hosts remaining in the same zone are not able to establish TCP connections [htts], while ICMP is successful. Tracing the traffic it shows up as application incomplete, rule intrazone default is hit.
Therefore, I was wondering whether TCP traffic within intrazone traffic is allowed.
I would appreciate any advice.
the intrazone-default has action allow by default. The application incomplete indicates that either server did not reply or there was not enough traffic to recognize the application. Here is KB for reference: Not-Applicable, Incomplete, Insufficient Data in the Application Field. To drill down into details, could you check logs from Monitor > Logs > Traffic, then search the log and click on magnifying glass on left side, then navigate to Details and check Bytes Sent & Bytes Received. If there is no Bytes Received this would indicate no response from server.
thank you for reply.
The application incomplete is expected in this case, there is no return traffic (Packet Received is 0):
As next, I would be looking into why there is no response. If you have access to server, I would check server side.
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