Chapter 8 Network Address Translation (NAT) Screens
P-660HW-Dx v2 User’s Guide
132
The following table summarizes these types.
8.2 SUA (Single User Account) Versus NAT
SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two
types of mapping,
Many-to-One
and
Server
. The ZyXEL Device also supports
Full
Feature
NAT to map multiple global IP addresses to multiple private LAN IP addresses of
clients or servers using mapping types as outlined in
• Choose
SUA Only
if you have just one public WAN IP address for your ZyXEL Device.
• Choose
Full Feature
if you have multiple public WAN IP addresses for your ZyXEL
Device.
8.3 SIP ALG
Some applications, such as SIP, cannot operate through NAT (are NAT un-friendly) because
they embed IP addresses and port numbers in their packets’ data payload.
Some NAT routers may include a SIP Application Layer Gateway (ALG). An Application
Layer Gateway (ALG) manages a specific protocol (such as SIP, H.323 or FTP) at the
application layer.
A SIP ALG allows SIP calls to pass through NAT by examining and translating IP addresses
embedded in the data stream.
When the ZyXEL Device registers with the SIP register server, the SIP ALG translates the
ZyXEL Device’s private IP address inside the SIP data stream to a public IP address. You do
not need to use STUN or an outbound proxy if your ZyXEL Device is behind a SIP ALG.
Table 45
NAT Mapping Types
TYPE
IP MAPPING
One-to-One
ILA1
ÅÆ
IGA1
Many-to-One (SUA/PAT)
ILA1
ÅÆ
IGA1
ILA2
ÅÆ
IGA1
…
Many-to-Many Overload
ILA1
ÅÆ
IGA1
ILA2
ÅÆ
IGA2
ILA3
ÅÆ
IGA1
ILA4
ÅÆ
IGA2
…
Many-to-Many No Overload
ILA1
ÅÆ
IGA1
ILA2
ÅÆ
IGA2
ILA3
ÅÆ
IGA3
…
Server
Server 1 IP
ÅÆ
IGA1
Server 2 IP
ÅÆ
IGA1
Server 3 IP
ÅÆ
IGA1
Содержание P-660HW-D1 V2
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Страница 7: ...Safety Warnings P 660HW Dx v2 User s Guide 7...
Страница 8: ...Safety Warnings P 660HW Dx v2 User s Guide 8...
Страница 10: ...Contents Overview P 660HW Dx v2 User s Guide 10...
Страница 19: ...Table of Contents P 660HW Dx v2 User s Guide 19 Index 351...
Страница 20: ...Table of Contents P 660HW Dx v2 User s Guide 20...
Страница 26: ...List of Figures P 660HW Dx v2 User s Guide 26...
Страница 31: ...31 PART I Introduction Introducing the ZyXEL Device 33 Introducing the Web Configurator 39...
Страница 32: ...32...
Страница 51: ...51 PART II Wizards Wizard Setup for Internet Access 53 Bandwidth Management Wizard 67...
Страница 52: ...52...
Страница 66: ...Chapter 3 Wizard Setup for Internet Access P 660HW Dx v2 User s Guide 66...
Страница 72: ...Chapter 4 Bandwidth Management Wizard P 660HW Dx v2 User s Guide 72...
Страница 73: ...73 PART III Network WAN Setup 75 LAN Setup 93 Wireless LAN 105 Network Address Translation NAT Screens 129...
Страница 74: ...74...
Страница 92: ...Chapter 5 WAN Setup P 660HW Dx v2 User s Guide 92...
Страница 128: ...Chapter 7 Wireless LAN P 660HW Dx v2 User s Guide 128...
Страница 141: ...141 PART IV Security Firewalls 143 Firewall Configuration 155 Content Filtering 177 Certificates 145...
Страница 142: ...142...
Страница 162: ...Chapter 10 Firewall Configuration P 660HW Dx v2 User s Guide 162 Figure 92 Firewall Edit Rule...
Страница 176: ...Chapter 10 Firewall Configuration P 660HW Dx v2 User s Guide 176...
Страница 180: ...Chapter 11 Content Filtering P 660HW Dx v2 User s Guide 180...
Страница 182: ...182...
Страница 186: ...Chapter 12 Static Route P 660HW Dx v2 User s Guide 186...
Страница 202: ...Chapter 14 Dynamic DNS Setup P 660HW Dx v2 User s Guide 202...
Страница 224: ...Chapter 16 Universal Plug and Play UPnP P 660HW Dx v2 User s Guide 224...
Страница 225: ...225 PART VI Maintenance and Troubleshooting System 227 Logs 233 Tools 251 Diagnostic 257 Troubleshooting 259...
Страница 226: ...226...
Страница 232: ...Chapter 17 System P 660HW Dx v2 User s Guide 232...
Страница 250: ...Chapter 18 Logs P 660HW Dx v2 User s Guide 250...
Страница 256: ...Chapter 19 Tools P 660HW Dx v2 User s Guide 256...
Страница 264: ...264...
Страница 332: ...Appendix F Internal SPTGEN P 660HW Dx v2 User s Guide 332...
Страница 346: ...Appendix J Legal Information P 660HW Dx v2 User s Guide 346...
Страница 358: ...Index P 660HW Dx v2 User s Guide 358...