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how do I unblock port 87

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I have a Barix 500, which is used to stream audio. I have the web port assigned to 87 for the GUI. it is a local port and not used over the internet. how do I unblock firefox from this port to gain access to my device?

I have a Barix 500, which is used to stream audio. I have the web port assigned to 87 for the GUI. it is a local port and not used over the internet. how do I unblock firefox from this port to gain access to my device?

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See:

To open the about:config page, type about:config in the location (address) bar and press the "Enter" key, just like you type the url of a website to open a website.
If you see a warning then you can confirm that you want to access that page.

  • Use the Filter bar at to top of the about:config page to locate a preference more easily.
  • Preferences that have been modified show as bold(user set).
  • Preferences can be reset to the default or changed via the right-click context menu.