VOIP over OpenVPN

nialllynch01

Hi,

I am having trouble getting VOIP to work over OPENVPN.
When connected to OPENVPN I can dial using my softphone on my laptop and the phone on the other end rings. When they pick up they can hear no audio and can hear no audio. All works fine when I am connected to the LAN.

The set up is as follows:
LAN 192.168.8.0/24
VOIP LAN 192.168.5.0/24
OPENVPN Server 192.168.8.197
OPENVPN Clients 10.8.0.0/24
OPENVPN Static Client addresses 10.5.0.0/24

I can access my LAN fine when connected and I can ping th IPBX card 192.168.5.200

When I view the firewall logs my client machines show up as 192.168.8.197 (OPENVPN Server IP Address)

Do I need to add in anything for routing, or is there a way that client IP addresses can be seen by the firewall as opposed to hiding behind the OPENVPN IP address 192.168.8.197.

Kind regards,

Niall Lynch

maikcat

hi there,

not sure about what this mean..

OPENVPN Clients 10.8.0.0/24
OPENVPN Static Client addresses 10.5.0.0/24

do you mean that your clients lan is 10.5.0.0?

can you post your configs?
the server/client is linux?
please post iptables -L -t nat on both..

Michael.

janjust

Are you 100% certain that your VPN itself is functioning correctly?

VoIP often requires tinkering with some QoS parameters; try adding

passtos

to the server config and adjust your firewall settings to give higher priority to VoIP and OpenVPN packets.

Another thing that sometimes helps is to add

fragment 900

(for OpenVPN over UDP) .

jimm1909

nialllynch01 wroteHi,

I am having trouble getting VOIP to work over OPENVPN.
When connected to OPENVPN I can dial using my softphone on my laptop and the phone on the other end rings. When they pick up they can hear no audio and can hear no audio. All works fine when I am connected to the LAN.

The set up is as follows:
LAN 192.168.8.0/24
VOIP LAN 192.168.5.0/24
OPENVPN Server 192.168.8.197
OPENVPN Clients 10.8.0.0/24
OPENVPN Static Client addresses 10.5.0.0/24

I can access my LAN fine when connected and I can ping th IPBX card 192.168.5.200

When I view the firewall logs my client machines show up as 192.168.8.197 (OPENVPN Server IP Address)

Do I need to add in anything for routing, or is there a way that client IP addresses can be seen by the firewall as opposed to hiding behind the OPENVPN IP address 192.168.8.197.

Kind regards,

Niall Lynch

Niall,

I am having a very similar issue and I am wondering if you ever resolved it. Please let me know, as I don't see your response here.

Would be appreciative of learning what you did so i can get my Cheapest Voip system at my business in working order.

Thanks,

Jim