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

[Robert Oldham]

Sergey,

Thank you. Your suggested solution worked perfectly. I really appreciate
your taking the time to help me!

Robert

On 02/25/2015 12:07 AM, Sergey Safarov wrote:
> 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 <mailto: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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