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How do I block specific range of inbound UDP ports?

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How can I create a rule that allows all inbound UDP ports except for the range that I want to block?

I am having a problem with a SIP attack to my softphone application. Looking at my computer's console it appears that the attacks are happening on inbound UDP ports 5000-5100. I see that there is a protected System rule that allows all inbound UDP ports and I am not sure how to modify it. I need leave UDP port 5060 open for our phone system to be able to call my softphone.

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