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Port Based Tunnelling with CX switches

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Port-based tunnelling (PBT) provides a method to tunnel the traffic of wired devices directly to a cluster of gateway /VPN concentrator (VPNC) without requiring an authentication server. By utilising this approach, authentication and network policies can be enforced at the gateway/VPNC side for tunnelled wired traffic. Centralising policies at the VPNC simplifies the management and enforcement of these policies. The use cases are many such as using it in SCADA/OT networks where they may not require any form of authentication.

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