Avaya Configuring BFE Services Bedienungsanleitung PDF herunterladen (Seite 133)

305753-A Rev 00

5-1

Chapter 5

Connecting the Router to a Blacker Front End

Blacker front end devices provide encryption services for connections over the

unsecured portions of packet-switched networks (Figure 5-1

). Hosts with Blacker

front ends are part of a red virtual network. The packet-switched network that

carries both the data secured by BFE devices and any other unsecured data is

known as the black network.

Figure 5-1. Blacker Front-End Network Configuration

BFE devices receive authorization and address translation services from an access

control center (ACC) residing on the black network. The ACC makes access

control decisions that determine which hosts are allowed to communicate with

each other. A key distribution center (KDC) residing on the black network

provides encryption keys and key management services. A BFE device uses these

encryption keys for encrypting traffic between itself and other BFE devices.

Router

BFE

Router

BFE

Router

BFE

Black network

Red network

Key

X.25 DDN

IP0015A

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Avaya Configuring BFE Services Bedienungsanleitung Seite 133