User`s guide
Table Of Contents
- About This User's Guide
- Document Conventions
- Safety Warnings
- Table of Contents
- Part I: Introduction
- 1. Getting to Know Your MWR222
- 2.
- 2. Introducing the Web Configurator
- 3. Monitor
- 4.
- 4.
- 4. MWR222 Modes
- 5. Router Mode
- 6. Access Point Mode
- 5.
- 5.
- 7. WISP Mode
- 7
- 7
- 8 Tutorials
- 8.3 Connecting to Internet from an Access Point
- 8.4 Configuring Wireless Security Using WPS
- 9 Wireless LAN
- 9.1 Overview
- 9.2 What You Can Do
- Use the General screen to enable the Wireless LAN, enter the SSID and select the wireless security mode.
- 9.3 What You Should Know
- 9.4 General Wireless LAN Screen
- 9.5 Security
- 9.6 MAC Filter
- 9.7 Wireless LAN Advanced Screen
- 9.8 Quality of Service (QoS) Screen
- 9.9 WPS Screen
- 9.10 WPS Station Screen
- 9.11 Scheduling Screen
- 9.12 WDS Screen
- 10.1 Overview
- 10.2 What You Can Do
- 10.3 What You Need To Know
- 10.2
- 10.3
- 10.4 Internet Connection
- 10.5 Mobile WAN
- 10.7 IGMP Snooping Screen
- 11 LAN
- 12 DHCP Server
- 13. Network Address Translation (NAT)
- 14 Dynamic DNS
- 15. OpenDNS
- 16 Static Route
- 17.
- 17.
- 17. Routing Information Protocol
- Part III
- Part V
- Maintenance and Troubleshooting
- Part VI
- Appendices and Index
- Appendix A
- Pop-up Windows, JavaScripts and Java Permissions
- End-User License Agreement for “MWR222”
- NOTE: Some components of this product incorporate free software programs covered under the open source code licenses which allows you to freely copy, modify and redistribute the software. For at least three (3) years from the date of distribution of t...
- Notice
- Information herein is subject to change without notice. Companies, names, and data used in examples herein are fictitious unless otherwise noted. No part may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any p...
- Notice
- GNU GENERAL PUBLIC LICENSE
- GNU LESSER GENERAL PUBLIC LICENSE
MWR211 User’s Guide
136
13. Network Address
Translation (NAT)
13.1 Overview
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP
address of a host in a packet. For example, the source address of an outgoing
packet, used within one network is changed to a different IP address known
within another network.
Each packet has two addresses – a source address and a destination address. For
outgoing packets, NAT maps private (local) IP addresses to globally unique ones
required for communication with hosts on other networks. It replaces the original
IP source address in each packet and then forwards it to the Internet. The
MWR222 keeps track of the original addresses and port numbers so incoming
reply packets can have their original values restored. The following figure
illustrates this.
Figure 69 NAT Example (use 192.168.10.x to be consistent with default value)
For more information on IP address translation, refer to RFC 1631, The IP
Network Address Translator (NAT).
13.2 What You Can Do
• Use the General screen to enable NAT and set a default server.
• Use the Application screen to forward incoming service requests to the server(s)
on your local network.
• Use the Advanced screen to change your MWR222’s trigger port settings.