Enterasys Networks CSX7000 Manual do Utilizador descarregar pdf (Página 32)

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USER’S GUIDE

32 CyberSWITCH

• Data Encryption

The CyberSWITCH encryption option provides data encryption through the Data Encryption

Standard (DES) algorithm. DES provides data security for transmissions over the WAN

between encryption devices. Options are available for encrypting communications over point-

to-point, frame relay, or Internet-based WANs. For more information, refer to the Encryption

Overview and IP Security discussions.

To activate the data encryption option on the CyberSWITCH, you will need to properly install

and configure the encryption adapter on the system.

• Dial Out Capability

The CyberSWITCH system will dial out to remote devices. This feature allows the system to

accept user data received on the Ethernet LAN or ISDN network and initiate a data connection

to the remote device specified in the user data. This allows devices on the local LAN to initiate

connections to networks connected to the system over the switched digital network. The

system monitors the connection for utilization and will remove the connection when it becomes

idle.

• Digital Modem

The CyberSWITCH’s digital modem capability allows analog modems to be intermixed with

ISDN, as required, to best fit specific networking needs. The digital modem adapter combines

both hardware and software elements to support a number of modems on a single board (from

eight V.34 modems to thirty K56Flex modems, depending upon adapter model). The digital

modem feature conforms to the V.90 standard.

• Dynamic Management

Manage Mode provides a “real-time” management mechanism that allows many system

parameters to be changed without interrupting the current execution state of the system

software. This feature consists of a series of console commands that enable a user to display

current system parameters, change many parameters dynamically, and write changes to disk

files so that they remain permanent.

• High Speed Digital Connections

The CyberSWITCH system supports 56Kbps and 64Kbps connections to remote locations.

These dial-up digital connections provide reliable high throughput connections for efficient

data transfer for the same cost as analog connections. If any remote devices connected to the

system support multi-link PPP, up to 32 parallel connections can be made at either 56Kbps or

64Kbps.

• IP Filters

IP filters allow you to control the transmission of individual IP packets based on the packet

type. You can specify packet type by IP address (source or destination) or by IP protocol (TCP,

UDP, ICMP).

Once you specify a packet type, two forms of IP filtering are available:

• Forwarding Filters, applied at discrete points of the IP processing path to determine if a

packet continues its normal processing, and a

• Connection Filter, which determines if an IP packet requiring a WAN connection may con-

tinue.

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