![background image](http://html1.mh-extra.com/html/zyxel-communications/p-320w/p-320w_user-manual_945264099.webp)
P-320W User’s Guide
Chapter 8 Network Address Translation (NAT)
99
C
H A P T E R
8
Network Address Translation
(NAT)
This chapter discusses how to configure NAT on the Prestige.
8.1 NAT 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.
8.1.1 NAT Definitions
Inside/outside denotes where a host is located relative to the Prestige. For example, the
computers of your subscribers are the inside hosts, while the web servers on the Internet are
the outside hosts.
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.
Note that inside/outside refers to the location of a host, while global/local refers to the IP
address of a host used in a packet. Thus, an inside local address (ILA) is the IP address of an
inside host in a packet when the packet is still in the local network, while an inside global
address (IGA) is the IP address of the same inside host when the packet is on the WAN side.
The following table summarizes this information.
Содержание P-320W
Страница 1: ...P 320W 802 11g Wireless Firewall Router User s Guide Version 1 00 11 2005 Edition 1...
Страница 2: ......
Страница 10: ...P 320W User s Guide 10 Customer Support...
Страница 24: ...P 320W User s Guide 24...
Страница 34: ...P 320W User s Guide 34 Chapter 1 Getting to Know Your Prestige...
Страница 44: ...P 320W User s Guide 44 Chapter 2 Introducing the Web Configurator...
Страница 60: ...P 320W User s Guide 60 Chapter 3 Connection Wizard...
Страница 80: ...P 320W User s Guide 80 Chapter 4 Wireless LAN...
Страница 92: ...P 320W User s Guide 92 Chapter 5 WAN...
Страница 118: ...P 320W User s Guide 118 Chapter 10 Static Route Screens...
Страница 140: ...P 320W User s Guide 140 Chapter 13 System...
Страница 149: ...P 320W User s Guide Chapter 15 Tools 149 Figure 99 System Restart...
Страница 150: ...P 320W User s Guide 150 Chapter 15 Tools...
Страница 162: ...P 320W User s Guide 162 Chapter 16 Troubleshooting Figure 109 Security Setting ActiveX Controls...
Страница 172: ...P 320W User s Guide 172 Appendix B IP Subnetting...
Страница 194: ...P 320W User s Guide 194 Appendix E PPTP...