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Firefox is listening for incoming connections on two ports. Why?

Firefox is listening for incoming connections on two ports. Why?

TCPView and ZoneAlarm firewall reveal that Firefox is accepting incoming connections on two ports on localhost (127.0.0.1). The port numbers are not fixed.

Asked by: Guest | Views: 35
Total answers/comments: 1
Guest [Entry]

"These are local loopback ports. Firefox uses them for local communication.

A loopback connection (to IP address 127.0.0.1) can be made by Firefox on non-Unix machines. In this case the browser is communicating with itself as expected, and it is not recommended that this communication be blocked.

Take a look at this: Connections established on startup - Firefox

And the bug report ""Connections opened on loopback (127.0.0.1) show in NETSTAT and ZoneAlarm has ""server rights"" alerts"" explains:

Whenever Mozilla is running there are two connections to the loopback address
that are connected to each other. The ports change but they are usually
lower-numbered unregistered ports."