FVS336Gv3 VPN GRE Problem

"Since the problem occurs from “outside” the network, kindly check the Internet IP address used in the client side PPTP configuration if correct since the FVS336Gv3 was installed. Do you have a static Internet IP Address or are you using a DDNS type service?  It is possible that the settings no longer matches the old FVS338 and could prevent the connection from “outside”."

Its the correct IP / hostname, i see the connection in the log.

You could enable logging temporarily on the WAN inbound to see if the PPTP client is actually hitting the firewall when initiating the PPTP VPN.   This would also help to know if the Internet IP address is set correctly or not.

Firewall dont block anything, i've checked the logs

You also mentioned that when it works from inside the network the (PPTP forwards to 192.168.0.100), did you set the correct inbound firewall rule to pass traffic coming from the WAN onto the Server at 192.168.0.100? – again enabling and checking the inbound firewall rule logs can help determine if the traffic is hitting the firewall and being forwarded to the correct IP address.

It forwards correctly, i see the logs it's connecting to the correct server.

What is the exact error message when the PPTP client fails to connect?  It would be best that you post a screenshot or image of it.

This is the RasMan events from Event viewer, as you see the problem is with GRE.

The strange thing is this works fine with our old Netgear Prosafe.

I've tried LPTP instead of PPTP and that works fine. So i might use that instead, but then it seems i've cant use the AD at 192.168.0.100 as user authentication, i have to create the users in ProSafe.

Thanks for response.

Regards,

Tom