**Configuring a Tunnel Interface VPN with DHCP Relay using IP Helper** Step 1: Configure the Tunnel Interface VPN Policy on each unit. This is done under VPN > Settings. On the General tab of the new VPN Policy configuration window, configure the following settings. Policy Type: Tunnel Interface Authentication Method: IKE using Preshared Secret Name: Enter a desired policy name IPSec Primary Gateway Name/Address: Enter the remote unit’s WAN IP. Enter a shared secretthat will be usedon each side of the tunnel. For more... {{ :sonicwall:vpn:configuring_a_tunnel_interface_vpn_with_dhcp_relay_using_ip_helper.pdf |}}