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Working with VPNs
Overview
Overview
Virtual private networks (VPNs) create secure tunnels across non-secure infrastructure such
as the Internet or publicly-accessible networks. The service controller features virtual private
network (VPN) capabilities that enable it to do the following:
Secure wireless client sessions with a VPN tunnel between wireless clients such as
wireless point-of-sale (POS) terminals and the service controller. IPSec, L2TP, and PPTP
are all supported. (VPN tunnel represented in green.)
Service controller
Router
Internet
port
24.1.1.4
Internet
LAN
port
7.1.1.1
VPN Server/
Gateway
(Peer)
3.1.1.2 10.0.0.0
10.0.0.2
Secure
resource
7.1.1.2
AP
Router
5.1.1.0
5.1.1.2
AP
5.1.1.3
Wireless
POS
7.1.1.3
Wireless
POS
Note For WPA-capable wireless clients, a better alternative to VPNs, is to extend WPA termination
from the AP to the service controller. See Terminate WPA at the service controller on
page 2-14.
Secure service controller communications to VPN servers, including both management
and client traffic. For example, the service controller can securely contact a remote
RADIUS server for user authentication. IPsec and PPTP are supported. (VPN tunnel
represented in blue.)
Service controller
Router
Internet
port
24.1.1.4
LAN
port
7.1.1.1
VPN Server/
Gateway
(Peer)
3.1.1.2
10.0.0.0
10.0.0.2
Secure
resource
7.1.1.2
7.1.1.2
APWireless
Client
7.1.1.3
5.1.1.2
5.1.1.2
APWireless
Client
5.1.1.3
Router
12-2