AMG1302-T10A User’s Guide
127
C
H A P T E R
9
Network Address Translation (NAT)
9.1 Overview
This chapter discusses how to configure NAT on the Device. 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 to a different IP address known within
another network.
9.1.1 What You Can Do in the NAT Screens
• Use the
NAT General Setup
screen (
) to configure the NAT setup
settings.
• Use the
Port Forwarding
screen (
) to configure forward incoming
service requests to the server(s) on your local network.
• Use the
Address Mapping
) to change your Device’s address
mapping settings.
• Use the
ALG
screen (
) to enable and disable the SIP (VoIP) ALG in the
Device.
9.1.2 What You Need To Know About NAT
Inside/Outside
Inside/outside denotes where a host is located relative to the Device, for example, the computers
of your subscribers are the inside hosts, while the web servers on the Internet are the outside
hosts.
Global/Local
Global/local denotes the IP address of a host in a packet as the packet traverses a router, for
example, the local address refers to the IP address of a host when the packet is in the local
network, while the global address refers to the IP address of the host when the same packet is
traveling in the WAN side.
NAT
In the simplest form, NAT changes the source IP address in a packet received from a subscriber
(the inside local address) to another (the inside global address) before forwarding the packet to the
WAN side. When the response comes back, NAT translates the destination address (the inside
global address) back to the inside local address before forwarding it to the original inside host.
Содержание AMG1302-T10A
Страница 4: ...Contents Overview AMG1302 T10A User s Guide 4 ...
Страница 12: ...Table of Contents AMG1302 T10A User s Guide 12 ...
Страница 13: ...13 PART I User s Guide ...
Страница 14: ...14 ...
Страница 20: ...Chapter 1 Introduction AMG1302 T10A User s Guide 20 ...
Страница 52: ...Chapter 4 Tutorials AMG1302 T10A User s Guide 52 ...
Страница 53: ...53 PART II Technical Reference ...
Страница 54: ...54 ...
Страница 126: ...Chapter 8 Wireless LAN AMG1302 T10A User s Guide 126 ...
Страница 140: ...Chapter 9 Network Address Translation NAT AMG1302 T10A User s Guide 140 ...
Страница 158: ...Chapter 11 Filters AMG1302 T10A User s Guide 158 ...
Страница 162: ...Chapter 12 Static Route AMG1302 T10A User s Guide 162 ...
Страница 166: ...Chapter 13 Port Binding AMG1302 T10A User s Guide 166 ...
Страница 176: ...Chapter 15 Quality of Service QoS AMG1302 T10A User s Guide 176 ...
Страница 198: ...Chapter 18 Universal Plug and Play UPnP AMG1302 T10A User s Guide 198 ...
Страница 202: ...Chapter 19 CWMP AMG1302 T10A User s Guide 202 ...
Страница 206: ...Chapter 20 System Settings AMG1302 T10A User s Guide 206 ...
Страница 216: ...Chapter 21 Logs AMG1302 T10A User s Guide 216 ...
Страница 266: ...Appendix C Pop up Windows JavaScripts and Java Permissions AMG1302 T10A User s Guide 266 ...
Страница 280: ...Appendix D Wireless LANs AMG1302 T10A User s Guide 280 ...
Страница 290: ...Appendix E IPv6 AMG1302 T10A User s Guide 290 ...
Страница 322: ...Appendix G Legal InformationSafety Warnings AMG1302 T10A User s Guide 322 ...
Страница 331: ...Index AMG1302 T10A User s Guide 331 ...
Страница 332: ...Index AMG1302 T10A User s Guide 332 ...