SIP port forward from WAN to OpenVPN Client

[bmmh]

Hi,

I have problems setting up port forward from pfsense WAN to PBX as OpenVPN client.

Port Forward WAN to PBX OpenVPN IP
5061 TCP
10000-20000 UDP

Outbound mode set to Hybrid with static ports for both rules. The outbound interface is OpenVPN.

SIP is able to connect and register from client but no audio.

When I connect the SIP phone to OpenVPN everything works perfectly.

PBX has defined NAT local networks and NAT on extensions.

I think the problem is the UDP traffic but I cannot see any UDP traffic coming in from WAN to PBX.

The SIP phone IP showing in the PBX is the OpenVPN gateway.

PBX is a Grandstream UCM6104.

Any help?

Thanks

[ahsunh]

@bmmh OpenVPN firewall interface allow SIP port rules then confirmed if using UDP tunnel.

[bmmh]

I can register the client to the PBX. The problem is that I have no audio at all.

Something with the RTP traffic.

When I connect the PBX and client to openvpn I have no problems. Everything works.

The problem arise when I try to use pfSense public IP. I think is something with the UDP Nat