Difficulty with getting an application to be available publically
I am running a instance on the Oracle Free Tier. My instance has public IP 18.104.22.168, and a Private IP of 10.0.0.9.
I have an application listening on port 10001 UDP. However I get no response when testing.
Running a packet capture on the instance I see that the packets reach the instance's VNIC but do not reply back. I have both attempted to configure rules to allow 10001 UDP inbound and outbound through UFW and as part of my Security List. (See attached photo)
My instance is running Ubuntu 20.04.
I'm still learning the Oracle Cloud interface so please let me know if there is anything obvious I may have missed.