[asterisk-users] Why is this happening?

[Mitch Miller]

The "moving to another port" discussion is actually what happens with 
sockets.  A socket listens on a designated port (ex: port 80) and when a 
connection is made to that socket, another socket begins to listen to 
port 80 for NEW connections.

Sockets and Ports often gets confused with each other.

-- Mitch



Eric "ManxPower" Wieling wrote:
> Time Bandit wrote:
> 
>>> Thanks for the answer, but I don't buy it.  There are currently 0
>>> calls up on that bridge, while another connection which has calls up
>>> on it is on Port 4569.. please try again.  IAX2 is suppose to run on
>>> ONLY one port.. this is why it is so nice for use in firewall
>>> situations.
>>
>>
>> It doesn't change a thing !
>>
>> Same thing happens with a webserver. It listen for connections on port
>> 80 (default port) and when a connection comes in, it is handed to
>> another free port on the server so the "main" server can continue
>> listening on port 80. Same thing with FTP, etc. All TCP servers that
>> accept more than one connection
> 
> 
> This is totally and completely wrong.
> 
> An IP connection is uniquely identified by the information of "Source IP 
> + Source Port" AND "Destination IP and Destination Port".
> 
> In the case of you example the IAX2 registration came in from the source 
> port on the far device of 1207.
> 
> Connections don't just move between ports.
> 
> When you do an "iax2 show peers" you are seeing the REMOTE IP address 
> and the REMOTE port.  It does not show anything about the local ports or 
> local IP addresses.
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