Openvpn 53 UDP?

[tbogdan]

Hello,

I have setup, port 53 for openvpn and I saw that the server doesn't replay on that port in order to establish connection. All other openvpn ports are ok.

The port is open, and working as udp port for softether vpn over dns/icmp.

Is there a way to use port for vpn over dns and openvpn at same time?

[Freek]

tbogdan wrote:
> Hello,
>
> I have setup, port 53 for openvpn and I saw that the server doesn't replay
> on that port in order to establish connection. All other openvpn ports are
> ok.
>
> The port is open, and working as udp port for softether vpn over dns/icmp.
>
> Is there a way to use port for vpn over dns and openvpn at same time?

Use a different port for OpenVPN?

[tbogdan]

This isn't an option :(.

Another thing, the softether server, can listen only on one external ip address?

I think that if it can, I can add second ip and forward the port from iptables.

[Freek]

tbogdan wrote:
> This isn't an option :(.
>
> Another thing, the softether server, can listen only on one external ip
> address?
>
> I think that if it can, I can add second ip and forward the port from
> iptables.

So you can only use port 53, i.e. all other ports are blocked? If so, that's not possible. Only 1 service can bind to 1 port.

AFAIK SoftEther only listens to 1 external IP. OpenVPN Access Server can listen to multiple IPs.

[tbogdan]

Freek wrote:
> So you can only use port 53, i.e. all other ports are blocked? If so, that's not
> possible. Only 1 service can bind to 1 port.
> AFAIK SoftEther only listens to 1 external IP. OpenVPN Access Server can listen to multiple IPs.

I need to bypass an 'special firewall' from android.
I checked you second afirmation and SoftEther listen on all ips available to server, local and external. You can check that using netstat -l.