P-660W-Tx v2 User’s Guide
93
C
H A P T E R
8
Network Address Translation
(NAT) Screens
8.1 Overview
This chapter discusses how to configure NAT on the ZyXEL 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.
8.1.1 What You Can Do in the NAT Screen
Use the
NAT Mode
screen (
) to disable NAT, configure NAT when you
have one public IP address (SUA), or configure NAT when you have multiple public IP
addresses (Full Feature).
8.1.2 What You Need to Know About NAT
Inside/Outside
Inside/outside denotes where a host is located relative to the ZyXEL 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 P-660W-T1 v2
Страница 2: ......
Страница 8: ...Safety Warnings P 660W Tx v2 User s Guide 8 ...
Страница 10: ...Contents Overview P 660W Tx v2 User s Guide 10 ...
Страница 18: ...Table of Contents P 660W Tx v2 User s Guide 18 ...
Страница 22: ...List of Figures P 660W Tx v2 User s Guide 22 ...
Страница 25: ...25 PART I Introduction Introducing the ZyXEL Device 27 Introducing the Web Configurator 31 ...
Страница 26: ...26 ...
Страница 30: ...Chapter 1 Introducing the ZyXEL Device P 660W Tx v2 User s Guide 30 ...
Страница 36: ...Chapter 2 Introducing the Web Configurator P 660W Tx v2 User s Guide 36 ...
Страница 37: ...37 PART II Setup Wizard Connection Setup Wizard 39 Media Bandwidth Management Wizard 47 ...
Страница 38: ...38 ...
Страница 46: ...Chapter 3 Connection Setup Wizard P 660W Tx v2 User s Guide 46 ...
Страница 50: ...Chapter 4 Media Bandwidth Management Wizard P 660W Tx v2 User s Guide 50 ...
Страница 52: ...52 ...
Страница 83: ...Chapter 7 WAN Setup P 660W Tx v2 User s Guide 83 Figure 32 WAN Setup PPPoE ...
Страница 104: ...Chapter 8 Network Address Translation NAT Screens P 660W Tx v2 User s Guide 104 ...
Страница 130: ...Chapter 11 Firewall Configuration P 660W Tx v2 User s Guide 130 ...
Страница 156: ...Chapter 15 Logs Screens P 660W Tx v2 User s Guide 156 ...
Страница 169: ...169 PART IV Maintenance Maintenance 171 ...
Страница 170: ...170 ...
Страница 184: ...Chapter 17 Maintenance P 660W Tx v2 User s Guide 184 ...
Страница 185: ...185 PART V Troubleshooting and Specifications Troubleshooting 187 Product Specifications 193 ...
Страница 186: ...186 ...
Страница 192: ...Chapter 18 Troubleshooting P 660W Tx v2 User s Guide 192 ...
Страница 200: ...200 ...
Страница 208: ...Appendix A Pop up Windows JavaScripts and Java Permissions P 660W Tx v2 User s Guide 208 ...
Страница 226: ...Appendix C Common Services P 660W Tx v2 User s Guide 226 ...
Страница 232: ...Appendix D Legal Information P 660W Tx v2 User s Guide 232 ...
Страница 244: ...Index P 660W Tx v2 User s Guide 244 ...