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Module Requirements

To create IPSec-secured tunnels, you must install an IPSec Service module (ISM) in the ERX router. The ISM is a security gateway and functions as one of the endpoints for secure tunnels. The tunnel endpoints are the tunnel source and the tunnel destination IP addresses. For an L2TP/IPSec tunnel, the source is the L2TP network server (LNS) and the destination is the L2TP access concentrator (LAC).

For information about installing ISMs in the ERX routers, see the ERX Hardware Guide.

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