Virtual Private Networking Using IPSec Connections
303
ProSecure Unified Threat Management (UTM) Appliance
Configure the L2TP Server (UTM9S Only)
As an alternate solution to IPSec VPN and PPTP tunnels, you can configure a Layer 2
Tunneling Protocol (L2TP) server on the UTM9S to allow users to access L2TP clients over
L2TP tunnels.
An L2TP Access Concentrator (LAC) typically initiates a tunnel to fullfil a connection request
from an L2TP user; the L2TP server accommodates the tunnel request and assigns an IP
address to the user. After an L2TP tunnel is established, the user can connect to an L2TP
client that is located behind the UTM9S.
Note: IPSec VPN and PPTP provide stronger authentication and
encryption than L2TP. (Packets that traverse the L2TP tunnel are
not encapsulated by IPSec or MPPE.)
You need to enable the L2TP server on the UTM9S, specify an L2TP server address pool,
and create L2TP user accounts. For information about how to create L2TP user accounts,
see Configure User Accounts on page 362.
 To enable the L2TP server and configure the L2TP server pool and authentication:
1. Select VPN > L2TP Server. The L2TP Server screen displays:
Figure 186.
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