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How can you tell it is closed? What tool(s) are you using to test? On the instance (assuming it is Linux - you don't mention your OS) you can use a few tools to see if the operating system is listening on that port because remotely initiated tests may not be reliable for UDP (no pun intended).
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Hi Thank you for your reply I am using Linux Ubuntu I used this to check https://www.yougetsignal.com/tools/open-ports/
and I used the command sudo lsof -i:5060
Does the
lsofcommand show the port to be open?