Product specifications

Efficient Networks
®
Router family
Command Line Interface Guide
Chapter 6: Connection Management
Efficient Networks
®
Page 6-35
Complete LNS and L2TP Client Configuration Example
The following information and illustration (Figure 6-2) provide a configuration example
of an LNS and L2TP Client.
Assumptions
IP Addresses
The LNS server’s LAN IP address is 192.168.100.1 (LNSserver) with a mask of
255.255.255.0.
The LNS has a WAN IP address of 192.168.110.1, which is used as the tunnel
endpoint.
The LNS connects to the remote internet.
The L2TP Client’s LAN IP address is 192.168.101.1 (soho) with a mask of
255.255.255.0. Additionally, 192.168.101.1 is also the tunnel endpoint within the
L2TP client. The router soho connects to the remote isp.
Secret/password
A shared tunnel secret of “tunnelsecret” will be used.
PPP Authentication
The LNS will authenticate the client using PPP. The client will not try to authenticate
the LNS using PPP. For PPP authentication, the L2TP client will be known as
“lacclient” with a password of “clientpassword”.
Tunnel
Only the L2TP client (soho) will initiate the tunnel and make the connection. The
tunnel is routed through the remote internet which is the default route. The LNS
server never calls the L2TP client (soho).
Note: The CHAP secret is “clientPassword”.
Note: The CHAP secret is “tunnelSecret”.
Note: No CHAP secret is needed; the client does not authenticate the LNS server.