Connecting a local site to the internet, 11 chapter 1 - introduction – Multi-Tech Systems RF500S User Manual
Page 11
11
Chapter 1 - Introduction
Connecting a Local Site to the Internet
In this application, the RF500S 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
Workstation
IP Address
192.168.0.106
NAT
Hidden Clients and Servers
Workstation
IP Address
192.168.0.105
Workstation
IP Address
192.168.1.101
Workstation
IP Address
192.168.1.100
Workstation
IP Address
192.168.0.104
Major
Segment
Gateway
Internet
RouteFinder
RF500S
IP Address
192.168.0.1
Server
IP Address
192.168.0.103
Server
IP Address
192.168.1.102
Connect Local Site (I External IP address = 253 Internal IP addresses)