Users Guide

Table Of Contents
324 | Advanced Security Dell PowerConnect ArubaOS 5.0 | [User Guide
Securing Client Traffic
You can secure wireless or wired client traffic with xSec. On the client, install the Odyssey Client software. The
xSec client must complete 802.1x authentication. to connect to the network. The client indicates the use of the
xSec protocol during 802.1x exchanges with the controller. (Dell controllers support 802.1x for both wired and
wireless clients.) Upon successful client authentication, an xSec tunnel is established between the controller and
the client.
The authenticated client is placed into a configured VLAN, which determines the client’s DHCP server, IP
address, and Layer-2 connection. For wireless xSec clients, the VLAN is the user VLAN configured for the
WLAN. For wired xSec clients and wireless xSec clients that connect to the controller through a non-Dell AP, the
VLAN is a designated xSec VLAN. The VLAN can also be derived from configured RADIUS server-derivation
rules or from Vendor-Specific Attributes (VSAs). Once an xSec tunnel is established, a DHCP server assigns the
xSec client an IP address from the address pool on the VLAN to which the client is assigned. All traffic between
the client and the controller is then encrypted.
The following sections describe how to configure xSec on the controller for wireless and wired clients.
Securing Wireless Clients
The following are the basic steps for configuring the controller for xSec wireless clients:
1. Configure the user VLAN to which the authenticated clients will be assigned. See Chapter 2, “Network
Parameters” for more information.
2. Configure the user role for the authenticated xSec clients. See Chapter 10, “Roles and Policies” for
information.
3. Configure the server group that will be used to authenticate clients using 802.1x. See Chapter 8,
“Authentication Servers” for more information
4. Configure the AAA profile to specify the 802.1x default user role. Specify the 802.1x authentication server
group.
5. Configure the virtual AP profile for the WLAN. Specify the previously-configured user VLAN. Only xSec
clients will be allowed to connect to the WLAN and non-xSec connections are dropped.
a. Specify the previously-configured AAA profile.
b. Configure the SSID profile with xSec as the authentication.
6. Install and set up the Odyssey Client on the wireless client.
Figure 46 is an example network where a wireless xSec client is assigned to the user VLAN 20 and the user role
“employee” upon successful 802.1x authentication. VLAN 1 includes the port on the controller that connects to
the wired network on which the AP is installed. (APs can connect to the controller across either a Layer-2 or
Layer-3 network.)
Figure 46 Wireless xSec Client Example
The following sections describe how to use the WebUI or CLI to configure the AAA profile and virtual AP profile
for this example. Other chapters in this manual describe the configuration of the user role, VLAN, authentication
servers and server group, and 802.1x authentication profile.
Note: You can configure the 802.1x authentication profile if necessary. See Chapter 9, “802.1x Authentication” for more
information.
Controller Dell AP xSec Client
VLAN 1
VLAN 20 VLAN 20