Nginx Proxy Manager local-only access list only works when credentials are required

This is a continuation of this thread.

I have an access list with the following rules:

  • Allow 192.168.1.0/24

  • Allow 127.0.0.1

  • Deny all

Assigning this list to a proxy host causes it to reject all traffic, even from within my network, with a 403 error. When I add authorization credentials (i.e. a username and password) to the list, the proxy host suddenly starts working as expected.

Does anyone know why this is and how I can make it not require credentials to work?

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