Typical applications, Connecting a remote site via cable modem, 9chapter 1 - introduction – Multi-Tech Systems RF500S User Manual
Page 9: Connect remote site via cable modem
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Chapter 1 - Introduction
Typical Applications
The following examples provide information about typical applications using the RF500S. They
describe using the RF500S to connect a remote site via a cable modem, using the RF500S to
segment a local area network, and using the RF500S to connect a LAN to the Internet using one
shared IP address.
Connecting a Remote Site via Cable Modem
In the following example the RF500S 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
Workstation
IP Address
192.168.0.106
Internet
Cable Modem
RouteFinder
RF500S
Workstation
IP Address
192.168.0.105
Workstation
IP Address
192.168.0.104
Workstation
IP Address
192.168.0.103
IP Address
192.168.0.1
Connect Remote Site via Cable Modem