Configuration manual

Dell PowerConnect W-AirWave 7.4 | Configuration Guide Configuration Reference | 139
Select Add to complete the configuration of the BW Contract profile, or click Save to complete the editing of an
existing profile. The new BW contract appears on the Security > User Roles page.
Security > User Roles > VPN Dialers
The VPN dialer can be downloaded using Captive Portal. For the user role assigned through Captive Portal,
configure the dialer by the name used to identify the dialer. For example, if the captive portal client is assigned
the guest role after logging on through captive portal and the dialer is called mydialer, configure mydialer as the
dialer to be used in the guest role.
Select a dialer from the drop-down list and assign it to the user role. This dialer will be available for download
when a client logs in using captive portal and is assigned this role.
The Security > User Roles > Add New VPN Dialer page contains the following fields, as described in Table 68:
Table 68 Security > User Roles > Add VPN Dialer Fields and Descriptions
Field Default Description
General Settings
Folder Top Set the folder with which the VPN Dialer is associated. The drop-down menu displays
all folders available for association with the profile.
Name Blank Enter the name of the profile.
Other Settings
Enable PPTP No Enable PPTP with this setting as desired.
Point-to-Point Tunneling Protocol (PPTP) is an alternative to L2TP/IPSec. Like L2TP/
IPSec, PPTP provides a logical transport mechanism to send PPP frames as well as
tunneling or encapsulation so that the PPP frames can be sent across an IP network.
PPTP relies on the PPP connection process to perform user authentication and
protocol configuration.
With PPTP, data encryption begins after PPP authentication and connection process
is completed. PPTP connections use Microsoft Point-to-Point Encryption (MPPE),
which uses the Rivest-Shamir-Aldeman (RSA) RC-4 encryption algorithm. PPTP
connections require user-level authentication through a PPP-based authentication
protocol (MSCHAPv2) is the currently-supported method).
Enable L2TP Yes Enable L2TP with this setting as desired.
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 the L2TP-encapsulated data.
 User-level authentication through a PPP-based authentication protocol using
passwords, SecureID, digital certificates, or smart cards after successful
creation of the SAs.
Send traffic to the
direct network in clear
No Use this setting if no encryption is to be used and packets passing between the
wireless client and controller are to be in clear text.
Disable wireless
devices when client is
wired
No Use this setting to disable wireless clients when a wired device is known to be on the
VPN.