HOTSPOT GATEWAY
System Administration 137
Two subsequent events drive the secure management function of the Nomadix
gateway and the devices behind it:
1. Establishing an IPSec tunnel to a centralized IPSec termination server (for
example, Nortel Contivity). As part of the session establishment process, key
tunnel parameters are exchanged (for example, Hash Algorithm, Security
Association Lifetimes, etc.).
2. The exchange of management traffic, either originating at the NOC or from the
edge device through the IPSec tunnel. Alternatively, AAA data such as RADIUS
Authentication and Accounting traffic can be sent through the IPSec tunnel. See
also, “Defining Automatic Configuration Settings {Auto Configuration}” on
page 73.
This procedure allows system administrators to establish the peer-to-peer IPSec
connection. Basic IPSec parameters must be entered by the system administrator to
successfully establish the VPN session.
We recommend that you create different private subnets behind the VPN
termination device and the HSG.
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