Avaya Configuring IP Services Bedienungsanleitung Seite 349

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117356-A Rev. A 11-1
Chapter 11
Connecting the Router to a Blacker Front End
The Blacker front end (BFE) is a classified encryption device used by hosts that
want to communicate across unsecured wide area networks. BFE devices are
typically found in government networks (for example, DSNET), which handle
sensitive data requiring a greater degree of security.
Blacker front-end support allows the router to connect to BFE devices. The BFE
device, in turn, provides the router with encryption services while acting as the
data communications equipment (DCE) end of the connection between the router
and the X.25 network (Figure 11-
1).
Hosts using attached BFE devices can communicate with each other over an
unsecured packet-switched network using data paths secured by the encryption
services of the BFEs. These hosts are part of a Red virtual network. The
packet-switched network that carries both the data secured by BFEs and any other
unsecured data is known as the Black network.
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