[Freeswitch-users] server to NAT'd server gateways

[Sergey Safarov]

1) Create VPN connection betwen Sip_B (client) and Sip_A (server);
2) On VPN interface configure static IP address;
3) Configure station on Sip_B and gateway on Sib_A;
4) Route call from Sip_A to Sip_B like you has configured routing call
 Sip_B to Sip_A;
5) To allow FS listen on VPN IP when VPN connection is down cconfigure
sysctl variable "net.ipv4.ip_nonlocal_bind = 1"
https://wiki.freeswitch.org/wiki/Freeswitch_HA

On Wed, Feb 25, 2015 at 5:37 AM, Robert Oldham <robert at oldhamtechnology.com>
wrote:

> I have two FreeSWITCH servers that I need to gateway calls between.
> Sip_A is on a public network with a static IP address. Sip_B is on a
> private network that is NAT'd. I am trying to pass calls from devices
> connected to Sip_B, through Sip_A and on to another server. I am also
> trying to pass calls from Sip_A into Sip_B. I don't have access to the
> firewall at the location of Sip_B so I am not able to forward standard
> ports into Sip_B.
>
> I am fairly new to FreeSWITCH, so I'm not certain how to solve this
> problem well. Many of the documents I have read online recommend using
> ACLs and port forwards for this. However, the private network does not
> have a static IP address that I can give access to and, as mentioned, I
> cannot make port forwards. Instead, I have created an extension on Sip_A
> and a gateway on Sip_B that registers using the extension on Sip_A. That
> works fine for passing calls from Sip_B through Sip_A and on. Sip_B has
> been maintaining a registered connection to Sip_A through the NAT'd
> connection for several days now without trouble.
>
> Not knowing a better solution, I have been searching for a gateway
> configuration on Sip_A that would allow it to route calls back over the
> registered extension from Sip_B. I have not found a way to accomplish it
> yet. As an alternative, I have also tried without success to create a
> passive gateway on Sip_A that the gateway on Sip_B could register with.
>
> Any help is appreciated!
>
> Thanks,
> Robert
>
>
>
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