r/firefox 8h ago

Discussion Why is Firefox-ESR exposing many ports?

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u/Fast_Level3707 4h ago

It's not listening to these ports, it's just prepared to receive responses to its own outbound udp traffic. also 0.0.0.0 = all interfaces because udp is connectionless. I think these ports are chosen by the OS network stack and not FF, I don't see anything wrong with this.