I generated traffic and checked where the queued bytes are going, also used torch to verify that it is indeed port 51820Then only one question remains, how sure are you that indeed it was matched by the Rule because of that specific port ?
Using latest version: v6.46.6 on hAP ac^2I can't be sure or guess as to why the first rule was matched by that port although it does not exist in the ports field.
What is your ROS Version ?
Is it updated to latest Version ?