TD-W8970N 
Wireless N ADSL2+ Modem Router User Guide
Figure
¾IPSec Connection Name: Enter a name for your VPN.
¾Remote IPSec Gateway Address (IP or Domain Name): Enter the destination gateway IP address in the box which is the public WAN IP or Domain Name of the remote VPN server endpoint. (For example: Input 219.134.112.247 in Device1, Input 219.134.112.246 in Device 2)
¾Tunnel access from local IP addresses: Choose Subnet if you want the Whole LAN to join the VPN network, or else choose Single Address if you want single IP to join the VPN network.
¾IP Address for VPN: Enter the IP address of your LAN. (For example: Input 192.168.1.1 in Device1, Input 192.168.2.1 in Device2)
¾IP Subnetmask: Enter the Subnet mask of your LAN. ( For example: Input 255.255.255.0 in both Device1 and Device2)
¾Tunnel access from remote IP addresses: Choose Subnet if you want the Remote Whole LAN to join the VPN network, or else choose Single Address if you want single IP to join the VPN network.
¾IP Address for VPN: Enter the IP address of the Remote LAN. ( For example: Input 192.168.2.1 in Device1,Input 192.168.1.1 in Device2)
¾IP Subnetmask: Enter the subnetmask of the remote LAN. ( For example: Input 255.255.255.0 in both Device1 and Device2)
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