[Freeswitch-users] freeswtich request on port 4242?

[Steven Ayre]

It's FreeSWITCH trying to automatically detect the ${local_ipv4}
and ${local_ipv6} values.

It does this by attempting to send a packet to an IP it knows will have to
go over the Internet and seeing which local IP the packet would leave the
machine from. That means if you have multiple IPs assigned to your machine
it'll know which one will send via the default gateway. That handles the
simple single-homed case anyway.

It doesn't really matter whether NAT happens or not, it works just as well
if your machine is listening on the public IP natively.

It's just trying to auto-detect what IP you're most likely to be reachable
on.

Try a packet trace... from memory it only creates the socket, doesn't
actually send the packet (?). But I may be wrong there.

-Steve


On 23 March 2014 02:32, Terry Barnum <terry at digital-outpost.com> wrote:

> While playing with freeswitch yesterday, Little Snitch reported
> that freeswitch immediately upon launch tries to establish a connection to
> 82.45.148.209 and 2001:503:ba3e::2:30 on port 4242.
>
> A whois shows the ipv4 to be from Telewest Broadband in the UK.
>
> The only port 4242 setting I find is in
>  conf/autoload_configs/event_multicast.conf.xml but for 225.1.1.1.
>
> Blocking the connection prevents sofia from registering with flowroute so
> I'm curious what it is. I couldn't find any relevant search results.
>
> FreeSWITCH Version 1.5.11b+git~20140301T003717Z~f2331de68b~64bit (git
> f2331de 2014-03-01 00:37:17Z 64bit)
>
> Thanks,
> -Terry
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