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Table 43, Label, Description

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Figure 70 Network > DHCP Server > Advanced Chapter 9 DHCP Server The following table describes the labels in this screen. Table 43 Network > DHCP Server > Advanced LABEL Static DHCP Table # MAC Address IP Address DNS Server DNS Servers Assigned by DHCP Server First DNS Server Second DNS Server DESCRIPTION This is the index number of the static IP table entry (row). Type the MAC address (with colons) of a computer on your LAN. Type the LAN IP address of a computer on your LAN. The NBG-418N passes a DNS (Domain Name System) server IP address (in the order you specify here) to the DHCP clients. If you do not configure the DNS server, the DHCP service is disabled and you must have another DHCP sever on your LAN, or else the computers must have their DNS server addresses manually configured. Select From ISP if your ISP dynamically assigns DNS server information (and the NBG418N's WAN IP address). The field to the right displays the (read-only) DNS server IP address that the ISP assigns. Select User-Defined if you have the IP address of a DNS server. Enter the DNS server's IP address in the field to the right. If you chose User-Defined, but leave the IP address set to 0.0.0.0, User-Defined changes to None after you click Apply. If you set a second choice to User-Defined, and enter the same IP address, the second UserDefined changes to None after you click Apply. Apply Reset Select DNS Relay to have the NBG-418N act as a DNS proxy. The NBG-418N's LAN IP address displays in the field to the right (read-only). The NBG-418N tells the DHCP clients on the LAN that the NBG-418N itself is the DNS server. When a computer on the LAN sends a DNS query to the NBG-418N, the NBG-418N forwards the query to the NBG-418N's system DNS server (configured in the WAN > Internet Connection screen) and relays the response back to the computer. You can only select DNS Relay for one of the three servers; if you select DNS Relay for a second or third DNS server, that choice changes to None after you click Apply. Click Apply to save your changes back to the NBG-418N. Click Reset to begin configuring this screen afresh. NBG-418N User's Guide 99

Section	Page
NBG-418N	1
Contents Overview	3
Table of Contents	5
User’s Guide	11
Introduction	13
1.1 Overview	13
1.2 Securing the NBG-418N	14
1.3 LEDs	15
1.4 The WPS Button	15
1.5 Wall Mounting	16
The Web Configurator	17
2.1 Overview	17
2.2 Accessing the Web Configurator	17
2.3 Resetting the NBG-418N	19
2.3.1 Using the RESET Button	19
Connection Wizard	21
3.1 Wizard Setup	21
3.2 Connection Wizard: STEP 1: System Information	22
3.2.1 System Name	22
3.2.2 Domain Name	23
3.3 Connection Wizard: STEP 2: Wireless LAN	23
3.3.1 WPA-PSK or WPA2-PSK Security	24
3.4 Connection Wizard: STEP 3: Internet Configuration	25
3.4.1 Ethernet Connection	26
3.4.2 PPPoE Connection	26
3.4.3 PPTP Connection	27
3.4.4 Your IP Address	28
3.4.5 WAN IP Address Assignment	29
3.4.6 IP Address and Subnet Mask	30
3.4.7 DNS Server Address Assignment	30
3.4.8 WAN IP and DNS Server Address Assignment	30
3.4.9 WAN MAC Address	31
3.5 Connection Wizard Complete	32
Modes	35
4.1 Overview	35
4.2 Setting your NBG-418N to Router Mode	36
4.2.1 Status Screen (Router Mode)	37
4.2.2 Router Mode Navigation Panel	42
4.3 Setting your NBG-418N to AP Mode	44
4.3.1 Status Screen (AP Mode)	45
4.3.2 AP Navigation Panel	47
4.4 Setting your NBG-418N to Universal Repeater Mode	48
4.4.1 Status Screen (Universal Repeater Mode)	49
4.4.2 Universal Repeater Navigation Panel	51
4.5 Setting your NBG-418N to Client Bridge Mode	52
4.5.1 Status Screen (Client Bridge Mode)	53
4.5.2 Client Bridge Navigation Panel	54
Tutorials	57
5.1 Overview	57
5.2 How to Connect to the Internet from an AP	57
5.2.1 Configure Wireless Security Using WPS on both your NBG-418N and Wireless Client	57
5.3 Enable and Configure Wireless Security without WPS on your NBG-418N	61
Technical Reference	65
Wireless LAN	67
6.1 Overview	67
6.2 What You Can Do	68
6.3 What You Should Know	69
6.3.1 Wireless Security Overview	69
6.4 General Wireless LAN Screen	70
6.4.1 No Security	72
6.4.2 WEP Encryption	73
6.4.3 WPA-PSK/WPA2-PSK	74
6.5 MAC Filter	75
6.6 Wireless LAN Advanced Screen	76
6.7 Quality of Service (QoS) Screen	78
6.8 WPS Screen	79
6.9 WPS Station Screen	80
6.10 Scheduling Screen	81
6.11 AP Select Screen	82
6.12 WLAN Info Screen	83
WAN	85
7.1 Overview	85
7.2 What You Need To Know	85
7.2.1 Configuring Your Internet Connection	85
7.3 Internet Connection	86
7.3.1 Ethernet Encapsulation	86
7.3.2 PPPoE Encapsulation	88
7.3.3 PPTP Encapsulation	90
LAN	93
8.1 Overview	93
8.2 What You Need To Know	93
8.2.1 IP Pool Setup	94
8.2.2 LAN TCP/IP	94
8.3 LAN IP Screen	94
DHCP Server	97
9.1 Overview	97
9.2 What You Can Do	97
9.3 What You Need To Know	97
9.4 General Screen	97
9.5 Advanced Screen	98
9.6 Client List Screen	100
Network Address Translation	101
10.1 Overview	101
10.2 What You Can Do	102
10.2.1 What You Need To Know	102
10.3 General NAT Screen	103
10.4 NAT Application Screen	104
10.5 Technical Reference	106
10.5.1 NAT Port Forwarding: Services and Port Numbers	106
10.5.2 NAT Port Forwarding Example	107
Dynamic DNS	109
11.1 Overview	109
11.2 Dynamic DNS Screen	109
Firewall	111
12.1 Overview	111
12.2 What You Can Do	111
12.3 What You Need To Know	112
12.3.1 About the NBG-418N Firewall	112
12.3.2 VPN Pass Through Features	112
12.4 General Firewall Screen	112
12.5 Services Screen	113
Remote Management	115
13.1 Overview	115
13.1.1 Remote Management Limitations	116
13.1.2 Remote Management and NAT	116
13.1.3 System Timeout	116
13.2 WWW Screen	116
Universal Plug-and-Play (UPnP)	119
14.1 Overview	119
14.2 What You Need to Know	119
14.3 Configuring UPnP	120
14.3.1 Using UPnP in Windows XP Example	120
14.3.2 Web Configurator Easy Access	122
System	125
15.1 Overview	125
15.2 What You Can Do	125
15.3 System General Screen	125
15.4 Time Setting Screen	126
Logs	129
16.1 Overview	129
16.2 What You Need to Know	129
16.3 View Log Screen	129
Tools	131
17.1 Overview	131
17.2 What You Can Do	131
17.3 Firmware Upload Screen	131
17.4 Configuration Screen	133
17.4.1 Backup Configuration	133
17.4.2 Restore Configuration	133
17.4.3 Back to Factory Defaults	134
17.5 Restart Screen	134
Sys OP Mode	137
18.1 Overview	137
18.2 General Screen	137
Language	139
19.1 Language Screen	139
Troubleshooting	141
20.1 Power, Hardware Connections, and LEDs	141
20.2 NBG-418N Access and Login	142
20.3 Internet Access	143
20.4 Resetting the NBG-418N to Its Factory Defaults	144
20.5 Wireless Problems	145
IP Addresses and Subnetting	147
Pop-up Windows, JavaScripts and Java Permissions	157
Setting Up Your Computer’s IP Address	167
Wireless LANs	195
Common Services	209
Legal Information	213

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Chapter 9 DHCP Server

NBG-418N User’s Guide

Figure 70

Network > DHCP Server > Advanced

The following table describes the labels in this screen.

Table 43

Network > DHCP Server > Advanced

LABEL

DESCRIPTION

Static DHCP Table

This is the index number of the static IP table entry (row).

MAC Address

Type the MAC address (with colons) of a computer on your LAN.

IP Address

Type the LAN IP address of a computer on your LAN.

DNS Server

DNS Servers

Assigned by DHCP

Server

The NBG-418N passes a DNS (Domain Name System) server IP address (in the order

you specify here) to the DHCP clients. If you do not configure the DNS server, the DHCP

service is disabled and you must have another DHCP sever on your LAN, or else the

computers must have their DNS server addresses manually configured.

First DNS Server

Second DNS Server

Select

From ISP

if your ISP dynamically assigns DNS server information (and the NBG-

418N’s WAN IP address). The field to the right displays the (read-only) DNS server IP

address that the ISP assigns.

Select

User-Defined

if you have the IP address of a DNS server. Enter the DNS server's

IP address in the field to the right. If you chose

User-Defined

, but leave the IP address

set to 0.0.0.0,

User-Defined

changes to

None

after you click

Apply

. If you set a

second choice to

User-Defined

, and enter the same IP address, the second

User-

Defined

changes to

None

after you click

Apply

Select

DNS Relay

to have the NBG-418N act as a DNS proxy. The NBG-418N's LAN IP

address displays in the field to the right (read-only). The NBG-418N tells the DHCP

clients on the LAN that the NBG-418N itself is the DNS server. When a computer on the

LAN sends a DNS query to the NBG-418N, the NBG-418N forwards the query to the

NBG-418N's system DNS server (configured in the

WAN > Internet Connection

screen) and relays the response back to the computer. You can only select

DNS Relay

for one of the three servers; if you select

DNS Relay

for a second or third DNS server,

that choice changes to

None

after you click

Apply

Click

Apply

to save your changes back to the NBG-418N.

Reset

Click

Reset

to begin configuring this screen afresh.