Static NAT and Dynamic NAT Usage for 2 WEBServers and Workstations for Internet AccessUsing OCR840 SDSL Router.This Application note will detail the methodology and configuration of Remote offices having MultipleWeb Servers with the Regular Internet Browser Users connecting to a central Office DSLAM site usingStatic and Dynamic NAT Technology.

3Com OfficeConnect 3C840 Application Note

Introduction

What Is the OfficeConnect Remote 840?

What is an SDSL Modem?

What is a BRouter?

What is a Remote Site?

What is RFC 1483

Benefits of Using RFC 1483

What is DNS?

What Is Default Bridge Mode?

OfficeConnect Remote 840 Panel Features

Back Panel

Configuration Overview

How to Manage the OfficeConnect Remote 840

Starting the OfficeConnect Remote 840 Manager

Using the OfficeConnect Remote 840 Manager

Online Help

Performing System Administration Tasks

Adding a Login

Modifying the Date and Time

Using the OfficeConnect Remote 840 Manager to Restore Defaults

Controlling TFTP Access

Assigning SNMP Trap Managers

Assigning Syslog Managers

Remote Site Overview

Managing a Remote Site Profile

Modifying a Remote Site Profile

Configuring Network Service Information (PPP / RFC 1483 / RFC 1490)

Frame Relay

Configuring ATM Information

Configuring Protocol Parameters

Overview

Enabling IP Routing

Adding a Local IP Network

Resetting Parameters

Configuring IP RIP on the LAN

Configuring IP for the Remote Site Connection

Configure the Remote Site IP Network Information

Configuring IP RIP on a Remote Site

Configuring IP Static and Framed Routes

Using IP Address Validation

MAC-Encapsulated Routing

Monitoring

Ping Responses

Option 2: DOS Ping to ISP or Remote Site Network

Configuring Bridging for the LAN

Modifying or Deleting a Bridge Network

Enabling Bridging

Bridge Firewall

Advanced Bridging Options

Default Bridge Mode

Installing the OfficeConnect Remote 840 Using Default Bridge Mode

Selecting Address Translation

Configuring the PAT Default Address

Configuring Static PAT Port Entries

Configuring NAT

DHCP Overview

Configuring the DHCP Mode

Configuring the DHCP Server

Configuring the DHCP Relay

DNS Overview

Configuring DNS

Configuring Static DNS Host Entries

Configuring IPX for the LAN

Modifying or Deleting an IPX Network

Configure the Remote Site IPX Network Information

Configuring IPX Static and Framed Routes

Adding a Framed IPX Route to a Remote Site (WAN)

Configuring IPX Static and Framed Services

Adding a Static IPX Service to a Local Site (LAN)

Adding a Framed IPX Service to a Remote Site (WAN)

Configuring IPX RIP and SAP

Remote Site (WAN) RIP and SAP

IPX Routing Configuration to Support MAC-Encapsulated Routing

Obtaining Updated OfficeConnect Remote 840 Software

OfficeConnect Remote 840 CD

Installing Software via DOS

Throughput Performance

Ethernet Interface

Ethernet Counters

Interface Status

SDSL Transceiver Status

Remote Site Connection

Frame Relay VC Site Counters

ARP Table

DHCP

OfficeConnect 3C840