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ZyXEL P-660RU-T3 v2 User Guide - Page 95

SUA Server, 12.3.1 Default Server IP Address, 12.3.2 Port Forwarding: Services and Port Numbers

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Page 95 highlights

Chapter 12 Network Address Translation (NAT) Screens 12.3 SUA Server A SUA server set is a list of inside (behind NAT on the LAN) servers, for example, web or FTP, that you can make visible to the outside world even though SUA makes your whole inside network appear as a single computer to the outside world. You may enter a single port number or a range of port numbers to be forwarded, and the local IP address of the desired server. The port number identifies a service; for example, web service is on port 80 and FTP on port 21. In some cases, such as for unknown services or where one server can support more than one service (for example both FTP and web service), it might be better to specify a range of port numbers. You can allocate a server IP address that corresponds to a port or a range of ports. Many residential broadband ISP accounts do not allow you to run any server processes (such as a Web or FTP server) from your location. Your ISP may periodically check for servers and may suspend your account if it discovers any active services at your location. If you are unsure, refer to your ISP. 12.3.1 Default Server IP Address " In addition to the servers for specified services, NAT supports a default server IP address. A default server receives packets from ports that are not specified in this screen. If you do not assign an IP address in Server Set 1 (default server) the ZyXEL Device discards all packets received for ports that are not specified here or in the remote management setup. 12.3.2 Port Forwarding: Services and Port Numbers The most often used port numbers are shown in the following table. Please refer to RFC 1700 for further information about port numbers. Table 21 Services and Port Numbers SERVICES PORT NUMBER ECHO 7 FTP (File Transfer Protocol) 21 SMTP (Simple Mail Transfer Protocol) 25 DNS (Domain Name System) 53 Finger 79 HTTP (Hyper Text Transfer protocol or WWW, Web) 80 POP3 (Post Office Protocol) 110 NNTP (Network News Transport Protocol) 119 SNMP (Simple Network Management Protocol) 161 SNMP trap 162 PPTP (Point-to-Point Tunneling Protocol) 1723 P-660RU-T v2 User's Guide 95

Section	Page
User’s Guide	1
About This User's Guide	3
Document Conventions	4
Safety Warnings	6
Contents Overview	9
Table of Contents	11
List of Figures	17
List of Tables	21
Introduction	23
Introducing the ZyXEL Device	25
1.1 Overview	25
1.2 Ways to Manage the ZyXEL Device	26
1.3 Good Habits for Managing the ZyXEL Device	27
1.4 ZyXEL Device Hardware Installation and Connection	27
1.5 LEDs	27
Introducing the Web Configurator	29
2.1 Web Configurator Overview	29
2.1.1 Accessing the ZyXEL Device Web Configurator	29
2.2 Resetting the ZyXEL Device	30
2.3 Navigating the ZyXEL Device Web Configurator	31
2.4 The Site Map Screen	32
Wizard	35
Wizard Setup	37
3.1 Introduction	37
3.1.1 Encapsulation	37
3.1.2 Multiplexing	38
3.1.3 VPI and VCI	38
3.1.4 Internet Access Wizard Setup: First Screen	38
3.2 IP Address and Subnet Mask	39
3.2.1 IP Address Assignment	39
3.2.2 Nailed-Up Connection (PPP)	40
3.2.3 NAT	41
3.2.4 Internet Access Wizard Setup: Second Screen	41
3.2.5 DHCP Setup	45
3.2.6 Internet Access Wizard Setup: Third Screen	45
3.2.7 Internet Access Wizard Setup: Connection Test	46
Advanced	49
Password Setup	51
4.1 Password Overview	51
4.1.1 Configuring Password	51
LAN Setup	53
5.1 LAN Overview	53
5.1.1 LANs, WANs and the ZyXEL Device	53
5.2 DNS Server Addresses	54
5.3 LAN TCP/IP	54
5.3.1 Factory LAN Defaults	54
5.3.2 IP Address and Subnet Mask	54
5.3.3 RIP Setup	55
5.3.4 Multicast	55
5.4 Any IP	56
5.4.1 How Any IP Works	56
5.5 Configuring the LAN	57
WAN Setup	59
6.1 WAN Overview	59
6.2 Metric	59
6.3 PPPoE Encapsulation	60
6.4 Traffic Shaping	60
6.5 Zero Configuration Internet Access	61
6.6 Configuring WAN Setup	61
6.7 Traffic Redirect	64
6.8 Configuring WAN Backup	65
Security	69
7.1 Configuring Internet Security	69
Dynamic DNS Setup	71
8.1 Dynamic DNS	71
8.1.1 DYNDNS Wildcard	71
8.2 Configuring Dynamic DNS	71
Time and Date	73
9.1 Configuring Time and Date	73
Remote Management Configuration	75
10.1 Remote Management Overview	75
10.1.1 Remote Management Limitations	75
10.1.2 Remote Management and NAT	76
10.1.3 System Timeout	76
10.2 Telnet	76
10.3 FTP	76
10.4 Web	76
10.5 Configuring Remote Management	76
Universal Plug-and-Play (UPnP)	79
11.1 Introducing Universal Plug and Play (UPnP)	79
11.1.1 How do I know if I'm using UPnP?	79
11.1.2 NAT Traversal	79
11.1.3 Cautions with UPnP	79
11.2 UPnP and ZyXEL	80
11.2.1 Configuring UPnP	80
11.3 Installing UPnP in Windows	80
11.3.1 Installing UPnP in Windows Me	81
11.3.2 Installing UPnP in Windows XP	82
11.4 Using UPnP in Windows XP: Example	84
11.4.1 Web Configurator Easy Access	87
Network Address Translation (NAT) Screens	91
12.1 NAT Overview	91
12.1.1 NAT Definitions	91
12.1.2 What NAT Does	92
12.1.3 How NAT Works	92
12.1.4 NAT Application	93
12.1.5 NAT Mapping Types	93
12.2 SUA (Single User Account) Versus NAT	94
12.3 SUA Server	95
12.3.1 Default Server IP Address	95
12.3.2 Port Forwarding: Services and Port Numbers	95
12.3.3 Configuring Servers Behind SUA (Example)	96
12.4 Selecting the NAT Mode	96
12.5 Configuring SUA Server	97
12.6 Configuring Address Mapping	98
12.7 Editing an Address Mapping Rule	99
Maintenance and Troubleshooting	101
Maintenance	103
13.1 Maintenance Overview	103
13.2 System Status Screen	103
13.2.1 System Statistics	105
13.3 DHCP Table Screen	106
13.4 Any IP Table Screen	107
13.5 Diagnostic Screens	108
13.5.1 Diagnostic General Screen	108
13.5.2 Diagnostic DSL Line Screen	109
13.6 Firmware Screen	110
13.7 Configuration Screen	111
13.7.1 Backup Configuration	112
13.7.2 Restore Configuration	112
13.7.3 Reset to Factory Defaults	114
Troubleshooting	115
14.1 Power, Hardware Connections, and LEDs	115
14.2 ZyXEL Device Access and Login	116
14.3 Internet Access	117
Appendices and Index	119
Product Specifications	121
Setting up Your Computer’s IP Address	125
IP Addresses and Subnetting	141
Pop-up Windows, JavaScripts and Java Permissions	149
Virtual Circuit Topology	155
Legal Information	157
Customer Support	161

Match case Limit results 1 per page

Chapter 12 Network Address Translation (NAT) Screens

P-660RU-T v2 User’s Guide

12.3

SUA Server

A SUA server set is a list of inside (behind NAT on the LAN) servers, for example, web or

FTP, that you can make visible to the outside world even though SUA makes your whole

inside network appear as a single computer to the outside world.

You may enter a single port number or a range of port numbers to be forwarded, and the local

IP address of the desired server. The port number identifies a service; for example, web

service is on port 80 and FTP on port 21. In some cases, such as for unknown services or

where one server can support more than one service (for example both FTP and web service),

it might be better to specify a range of port numbers. You can allocate a server IP address that

corresponds to a port or a range of ports.

Many residential broadband ISP accounts do not allow you to run any server processes (such

as a Web or FTP server) from your location. Your ISP may periodically check for servers and

may suspend your account if it discovers any active services at your location. If you are

unsure, refer to your ISP.

12.3.1

Default Server IP Address

In addition to the servers for specified services, NAT supports a default server IP address. A

default server receives packets from ports that are not specified in this screen.

If you do not assign an IP address in Server Set 1 (default server) the ZyXEL

Device discards all packets received for ports that are not specified here or in

the remote management setup.

12.3.2

Port Forwarding: Services and Port Numbers

The most often used port numbers are shown in the following table. Please refer to RFC 1700

for further information about port numbers.

Table 21

Services and Port Numbers

SERVICES

PORT NUMBER

ECHO

FTP (File Transfer Protocol)

SMTP (Simple Mail Transfer Protocol)

DNS (Domain Name System)

Finger

HTTP (Hyper Text Transfer protocol or WWW, Web)

POP3 (Post Office Protocol)

110

NNTP (Network News Transport Protocol)

119

SNMP (Simple Network Management Protocol)

161

SNMP trap

162

PPTP (Point-to-Point Tunneling Protocol)

1723