Gre Tunnels; Configuring A Pppoe Client - D-Link NetDefend DFL-210 User Manual

3.3.5. GRE Tunnels

• The IP address specified, or possibly the address assigned by the PPPoE server when
unnumbered PPPoE is not forced, will serve as the IP address of the PPPoE client interface. This
will be used as the local IP address for traffic leaving the interface when the traffic is originated
or NATed by the D-Link Firewall.
Example 3.12. Configuring a PPPoE client
This example shows how to configure a PPPoE client on the wan interface with traffic routed over PPPoE.
CLI
gw-world:/> add Interface PPPoETunnel PPPoEClient EthernetInterface=wan
Web Interface
1. Go to Interfaces > PPPoE > Add > PPPoE Tunnel
2. Then enter:
• Name: PPPoEClient
• Physical Interface: wan
• Remote Network: all-nets (as we will route all traffic into the tunnel)
• Service Name: Service name provided by the service provider
• Username: Username provided by the service provider
• Password: Password provided by the service provider
• Confirm Password: Retype the password
• Under Authentication specify which authentication protocol to use
(the default settings will be used if not specified)
• Disable the option Enable dial-on-demand
• Under Advanced, if Add route for remote network is enabled then a new route will be added for the
interface
3. Click OK
3.3.5. GRE Tunnels
Overview
The Generic Router Encapsulation (GRE) protocol is a simple, encapsulating protocol that can be
used whenever there is a need to tunnel traffic across networks and/or through network devices.
GRE does not provide any security features but this means that its use has extremely low overhead.
Using GRE
GRE is typically used to provide a method of connecting two networks together across a third
Network=all-nets Username=exampleuser Password=examplepw
Note
To provide a point-to-point connection over Ethernet, each PPP session must learn the
Ethernet address of the remote peer, as well as establish a unique session identifier.
PPPoE includes a discovery protocol that provides this.
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Chapter 3. Fundamentals