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RTSP 'SETUP' request packets are dropped by Security Gateway
Symptoms
  • RTSP 'SETUP' request packets are dropped by Security Gateway.

  • Kernel debug shows:

    ;fw_conn_post_inspect: handler function returned action REJECT
    ;fw_log_drop: Packet proto=6 Source_IP:Source_Port - > Dest_IP:Dest_Port dropped by fw_conn_post_inspect Reason: Handler drop/reject
    
Cause

The 'client_port' field in RTSP 'SETUP' packet contains a range where the start port and the end port are identical numbers.


Solution
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