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Overview

You can use the E-series router to terminate users on multiple VPNs (that is, a private intranet where users can log in and access private servers). For the E-series router, VPNs appear as VRs or VRFs. Users that connect to the VPN terminate on the associated VR or VRF. The router contains a link between the VR or VRF and the private intranet containing the resources. This link can be a direct connection, or a tunnel (IPSec, IP-in-IP, GRE, or MPLS). Once establishing a connection, the router can pass traffic between the VPN and connected users.

The E-series router already supports termination of secure remote access subscribers using L2TP and IPSec. In this model, IPSec uses transport mode to “ protect” PPP subscribers that use L2TP tunnels as described in RFC 3193. However, because they are handled by the PPP and L2TP application, IPSec has no direct information about the subscribers. By terminating dynamic IPSec subscribers, the IPSec protocol manages the subscribers completely.

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