Multitech RF802EW Guida Utente Scaricare il pdf (Pagina 8)

Multi-Tech Systems, Inc. RouteFinder RF802EW User Guide

Chapter 1 - Introduction

Typical Applications

The following examples provide information about typical applications using the

RF802EW. They describe using the RF802EW to connect a remote site via a cable

modem, using the RF802EW to segment a local area network, and using the RF802EW

to connect a LAN to the Internet using one shared IP address.

Connecting a Remote Site via Cable Modem

In the following example the RF802EW is used to connect a LAN to the Internet via DSL

or a cable modem.

Kernal: NAT (outgoing TCP/IP connection sharing a single Internet IP address

or using multiple IP mapping)

 Virtual Server (allowing incoming specific TCP/IP service request

redirect to an internal server)

 Static Routing (Routing table setting to Internal Local Gateways)

 Firewall

External: Fixed External Port IP or DHCP client (Dynamic IP assigned)

Internal: Device Fixed IP

DHCP Server

Connect Remote Site via Cable Modem

Connecting a Local Site to the Internet

In this application, the RF802EW is used to connect up to 253 Internal IP addresses to

the Internet using a single shared external IP address.

Kernal: NAT (outgoing TCP/IP connection sharing single External Port IP or using

multiple IP Mapping)

 Virtual Server (allow incoming specific TCP/IP service request redirect

to internal server)

 Firewall

External: Fixed External Port IP and mask DNS IP, Gateway IP or DHCP client

(Dynamic IP for the device, DNS and Gateway assigned.)

Internal: Device Fixed IP

DHCP Server

Connect Local Site (I External IP address = 253 Internal IP addresses)

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Multitech RF802EW Guida Utente Pagina 8