Blocking access in the firewall to a connection I previously allowed

Issue abstract: How do I revoke access to a connection I previously allowed in the firewall?

Detailed description: Whenever I use FaceTime on my computer, I get a bunch of notifications that such-and-such computer wants to access my computer. I deny all of them, but this time, I hit the wrong button and allowed one. How do I find this connection and change the settings so it is blocked?

Product & version number: Norton Security 8.9.2

OS details: MacOS Sonoma 14.6.1

What is the error message you are seeing? none

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