[vpn-help] VPN setup

[Morten Brix Pedersen]

Hi,

I'm pretty new to VPN so I am looking for much appreciated help.

We need to connect to an external system/API, which requires a
VPN-connection.
>From the provider we have received information on the ip address on the VPN
peer and a preshared key. Further we had to give them our public ip in
order to restrict connections from just our ip.

I setup an AWS EC2 Instance (Windows) and installed Shrew Soft VPN. I am
then trying to connect to their ip with the preshared key using IPSec, but
the only thing showing up is:

    bringing up tunnel ...
    negotiation timout occurred
    tunnel disabled

One thing I notice in the VPN Trace tool is that "Destination" is our
servers private ip address and not the public ip address that we gave them.
On AWS EC2, it does not seem possible to register the network interface
with the public ip. Is there a way to override this destination ip?

How can I debug this further?

Thanks

 - Morten.
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