Re: PPTP VPN fails to work after installing Motorolla NVG510
11-06-2011 12:57:27 PM
If the settings Bangbak recommends don't work for you, like they didn't for me, here's details how I made it work:
1. Find the WAN IP address.
a. Go to your NVG settings page, which by default is at http://192.168.1.254
b. Click "Broadband", and copy the IP address next to "Broadband IPv4 Address"
c. Note the router address next to "Gateway IPv4 Address".
d. Note the DNS servers next to : "Primary DNS" and "Secondary DNS"
2. Following Bangbak, go to the Firewall, IP Passthrough page on your NVG control page. Set 'Passthrough Mode" to Manual. Other settings there can be left blank. Hit "Save" and "reboot" the NVG.
3. Making sure your computer can still talk to your local router, on your local router, set it's WAN IP to "static" using the copied IP address.
a. If you have an Apple Airport Extreme, start the Airport Utility, click Manual Setup, then Internet, and then TCP/IP tab. I set mine to:
Configure IPv4: manually
IP address: <as copied in step 1b. >
Subnet mask : 255.255.128.0 worked for me (see note b)
Router address: <as copied in step 1c>
DNS Server(s): <as copied in step 1d, or use another DNS provider like OpenDNS>
b. My assigned "Gateway IPv4 Address" was 184.108.40.206, but my assigned WAN IP was in 108.209.177.x, so the netmask is not the typical 255.255.255.0. The 176 and 177 don't match. But they both are greater than 128, so 128.0 matches both. I had set the typical three 255s first, but that didn't work.
3. I also set my Airport "Internet Connection" this way, per Bangbak's suggestions:
Connect using: Ethernet (It is the only thing plugged into my NVG's Ethernet ports. All else is plugged into the Airport's ports.)
Ethernet WAN Port: Automatic
Connection Sharing: Share a public IP address