Advanced Services > Vpn Services > L2Tp - Dell PowerConnect W-AirWave 7.6 Configuration Manual

Advanced Services > VPN Services > L2TP
The combination of Layer-2 Tunneling Protocol and Internet Protocol Security (L2TP/IPSec) is a highly secure
technology that enables VPN connections across public networks such as the Internet. L2TP/IPSec provides both a
logical transport mechanism on which to transmit PPP frames as well as tunneling or encapsulation so that the PPP
frames can be sent across an IP network. L2TP/IPSec relies on the PPP connection process to perform user
authentication and protocol configuration. With L2TP/IPSec, the user authentication process is encrypted using the
Data Encryption Standard (DES) or Triple DES (3DES) algorithm.
L2TP/IPSec requires two levels of authentication:
Computer-level authentication with a preshared key to create the IPSec security associations (SAs) to protect
l
the L2TP-encapsulated data.
User-level authentication through a PPP-based authentication protocol using passwords, SecureID, digital
l
certificates, or smart cards after successful creation of the SAs.
Navigate to the Advanced Services > VPN Services > L2TP page from the Dell PowerConnect W Configuration
navigation pane. This page lists all L2TP profiles that are currently available. Select Add to create a new L2TP
profile, or click the pencil icon next to an existing profile to modify settings. The Advanced Services > VPN
Services > L2TP Add/Edit Details page contains the following fields, as described in
Table 32:
Advanced Services > VPN Services > L2TP Add/Edit Details Fields and Descriptions
Field
General Settings
Folder
Name
Other Settings
Enable L2TP
PPP Authentication Modes
Primary DNS Server
Secondary DNS Server
Primary WINS Server
Secondary WINS Server
Hello Timeout
(10-1440 secs)
SecurID Token Persistence
Timeout (15-10080 Mins)
Select Add to complete the L2TP profile, or click Save to retain changes to an existing L2TP profile.
Dell PowerConnect W-AirWave 7.6 | Configuration Guide
Default Description
Set the folder with which the L2TP profile is associated. The drop-down
Top
menu displays all folders available for association with the L2TP profile.
Blank Enter the name of the L2TP profile.
Yes Enable or disable this L2TP profile.
PAP Select one or more authentication modes to support this L2TP profile.
Enter the IP address of the primary DNS server.
Enter the IP address of the secondary DNS server.
Enter the IP address of the primary Windows Internet Naming Service
(WINS) server.
Enter the IP address of the secondary WINS server.
60 Enter the time, in seconds, at which L2TP authentication times out.
Enter the time, in minutes, at which the SecurID Token expires. requiring
1440
reauthentication.
Table 32.
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