The computer "239.255.255.250" trying to access Firefox.app on your computer. Do you want to allow this connection?

What is this for? And if it's harmless, I say allow? Just started in the last 2 weeks (end of February 2015). It's bugging the heck out of me. Thank you.

Hello kvoliver23, this is due to the "Send to the video device" feature which has landed in firefox 36 - if you are not using that you can block safely of these applications.
More information is available at How to stop Firefox from auto manufacturing connections (under 'media capabilities' in particular).

Tags: Firefox

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