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ZyXEL P-660RU-T3 v2 User Guide - Page 54

DNS Server Addresses, 5.3 LAN TCP/IP, 5.3.1 Factory LAN Defaults, 5.3.2 IP Address and Subnet Mask

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Page 54 highlights

Chapter 5 LAN Setup 5.2 DNS Server Addresses DNS (Domain Name System) maps a domain name to its corresponding IP address and vice versa. The DNS server is extremely important because without it, you must know the IP address of a computer before you can access it. The DNS server addresses you enter when you set up DHCP are passed to the client machines along with the assigned IP address and subnet mask. There are two ways that an ISP disseminates the DNS server addresses. • The ISP tells you the DNS server addresses, usually in the form of an information sheet, when you sign up. If your ISP gives you DNS server addresses, enter them in the DNS Server fields in the LAN Setup screen. • Some ISPs choose to disseminate the DNS server addresses using the DNS server extensions of IPCP (IP Control Protocol) after the connection is up. If your ISP did not give you explicit DNS servers, chances are the DNS servers are conveyed through IPCP negotiation. The ZyXEL Device supports the IPCP DNS server extensions through the DNS proxy feature. The ZyXEL Device acts as a DNS proxy when the Primary and Secondary DNS Server fields are left blank in the LAN Setup screen. Please note that DNS proxy works only when the ISP uses the IPCP DNS server extensions. It does not mean you can leave the DNS servers out of the DHCP setup under all circumstances. If your ISP gives you explicit DNS servers, make sure that you enter their IP addresses in the LAN Setup screen. 5.3 LAN TCP/IP The ZyXEL Device has built-in DHCP server capability that assigns IP addresses and DNS servers to systems that support DHCP client capability. 5.3.1 Factory LAN Defaults The LAN parameters of the ZyXEL Device are preset in the factory with the following values: • IP address of 192.168.1.1 with subnet mask of 255.255.255.0 (24 bits) • DHCP server enabled with 32 client IP addresses starting from 192.168.1.33. These parameters should work for the majority of installations. If your ISP gives you explicit DNS server address(es), read the embedded web configurator help regarding what fields need to be configured. 5.3.2 IP Address and Subnet Mask Refer to Section 3.2 on page 39 for this information. 54 P-660RU-T v2 User's Guide

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 5 LAN Setup

P-660RU-T v2 User’s Guide

5.2

DNS Server Addresses

DNS (Domain Name System) maps a domain name to its corresponding IP address and vice

versa. The DNS server is extremely important because without it, you must know the IP

address of a computer before you can access it. The DNS server addresses you enter when you

set up DHCP are passed to the client machines along with the assigned IP address and subnet

mask.

There are two ways that an ISP disseminates the DNS server addresses.

•

The ISP tells you the DNS server addresses, usually in the form of an information sheet,

when you sign up. If your ISP gives you DNS server addresses, enter them in the DNS

Server fields in the

LAN Setup

screen.

•

Some ISPs choose to disseminate the DNS server addresses using the DNS server

extensions of IPCP (IP Control Protocol) after the connection is up. If your ISP did not

give you explicit DNS servers, chances are the DNS servers are conveyed through IPCP

negotiation. The ZyXEL Device supports the IPCP DNS server extensions through the

DNS proxy feature.

The ZyXEL Device acts as a DNS proxy when the

Primary

and

Secondary

DNS Server

fields are left blank in the

LAN Setup

screen.

Please note that DNS proxy works only when the ISP uses the IPCP DNS server

extensions. It does not mean you can leave the DNS servers out of the DHCP setup under

all circumstances. If your ISP gives you explicit DNS servers, make sure that you enter

their IP addresses in the

LAN Setup

screen.

5.3

LAN TCP/IP

The ZyXEL Device has built-in DHCP server capability that assigns IP addresses and DNS

servers to systems that support DHCP client capability.

5.3.1

Factory LAN Defaults

The LAN parameters of the ZyXEL Device are preset in the factory with the following values:

•

IP address of 192.168.1.1 with subnet mask of 255.255.255.0 (24 bits)

•

DHCP server enabled with 32 client IP addresses starting from 192.168.1.33.

These parameters should work for the majority of installations. If your ISP gives you explicit

DNS server address(es), read the embedded web configurator help regarding what fields need

to be configured.

5.3.2

IP Address and Subnet Mask

Refer to

Section 3.2 on page 39

for this information.