I am trying to connect my Ubuntu PC to a remote VPN. The other users connecting to this VPN are on Macs using the IPSecuritas VPN client. I've tried many VPN clients with no success. Shrew Soft is the closest to IPSecuritas in terms of the configuration options it provides. But after setting up Shrew with the same parameters as the Mac guys I still get the following error on the VPN router.
[rv120w][IKE] ERROR: Ignore information because the message has no hash payload.
Does anyone have any idea what is wrong?