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ZyXEL P-660R-T1 v3s User Guide - Page 83

The DMZ Screen, Advanced Setup > NAT

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Chapter 10 Network Address Translation (NAT) Table 21 Network > NAT > General (continued) LABEL DESCRIPTION Number of IPs Select Single if you have just one public WAN IP address for your ZyXEL Device. Select Multiple if you have multiple public WAN IP addresses for your ZyXEL Device. DMZ Click this to configure the DMZ settings. See Section 10.3 on page 83 for more details. Virtual Server Click this to configure port forwarding rules for your ZyXEL Device. See Section 10.4 on page 84 for more details. IP Address Mapping This is available only when you select Multiple in the Number of IPs field. Click this to configure address mapping rules for your ZyXEL Device. See Section 10.5 on page 86 for more details. 10.3 The DMZ Screen The DeMilitarized Zone (DMZ) provides a way for public servers (Web, e-mail, FTP, etc.) to be visible to the outside world (while still being protected from DoS (Denial of Service) attacks such as SYN flooding and Ping of Death). These public servers can also still be accessed from the secure LAN. By default the firewall allows traffic between the WAN and the DMZ, traffic from the DMZ to the LAN is denied, and traffic from the LAN to the DMZ is allowed. Internet users can have access to host servers on the DMZ but no access to the LAN, unless special filter rules allowing access were configured by the administrator or the user is an authorized remote user. Use this screen to configure a separate independent network from the LAN in which you can put your servers. Click Advanced Setup > NAT > DMZ to open the following screen. Figure 35 Advanced Setup > NAT > DMZ The following table describes the labels in this screen. Table 22 Advanced Setup > NAT > DMZ LABEL DESCRIPTION DMZ setting for This field displays the PVC you want to configure. DMZ Use this field to enable or disable DMZ. DMZ Host IP Address Type the IP address for DMZ in dotted decimal notation. Note: Make sure the IP addresses of the LAN, WAN and DMZ are on separate subnets. SAVE Click this to save your settings. BACK Click this to return to the previous screen without saving. P-660R-Tx v3s User's Guide 83

Section	Page
User’s Guide	1
About This User's Guide	3
Document Conventions	5
Safety Warnings	7
Contents Overview	9
Table of Contents	11
List of Figures	19
List of Tables	23
Introduction	25
Introducing the ZyXEL Device	27
1.1 Overview	27
1.2 Ways to Manage the ZyXEL Device	27
1.3 Good Habits for Managing the ZyXEL Device	28
1.4 Applications for the ZyXEL Device	28
1.4.1 Internet Access	28
1.5 LEDs (Lights)	29
1.6 The RESET Button	30
1.6.1 Using the Reset Button	30
Introducing the Web Configurator	31
2.1 Overview	31
2.1.1 Accessing the Web Configurator	31
2.2 Web Configurator Main Screen	32
2.2.1 Navigation Panel	33
2.2.2 Main Window	34
Status	35
Device Information	37
3.1 Overview	37
3.2 The Device Info Screen	37
System Logs	39
4.1 Overview	39
4.2 The System Log Screen	39
Traffic Statistics	41
5.1 Overview	41
5.2 The Statistics Screen	41
Quick Start Wizard	43
Quick Start Wizard	45
6.1 Overview	45
6.2 Quick Start Wizard	45
Interface Setup	51
Internet Setup	53
7.1 Overview	53
7.1.1 What You Can Do in the Internet Screens	53
7.1.2 What You Need to Know About ADSL Internet Access	53
7.1.3 Before You Begin	54
7.2 The Internet Screen	55
7.2.1 Dynamic IP Address	56
7.2.2 Static IP Address	58
7.2.3 PPPoA/PPPoE	60
7.2.4 Bridge Mode	62
7.2.5 The PVCs Summary Screen	62
7.3 WAN Technical Reference	63
7.3.1 Encapsulation	63
7.3.2 Multiplexing	64
7.3.3 VPI and VCI	64
7.3.4 IP Address Assignment	64
7.3.5 Always-On Connection (PPP)	65
7.3.6 ATM QoS	65
7.3.7 ATM Traffic Classes	66
LAN Setup	67
8.1 Overview	67
8.1.1 What You Can Do in the LAN Screens	67
8.1.2 What You Need To Know About LAN	67
8.2 The LAN Screen	68
8.2.1 The DHCP IP Pool Summary Screen	70
8.3 LAN Technical Reference	71
8.3.1 LANs, WANs and the ZyXEL Device	71
8.3.2 DHCP Setup	71
8.3.3 DNS Server Addresses	72
8.3.4 LAN TCP/IP	72
8.3.5 RIP Setup	73
8.3.6 Multicast	74
Advanced Setup	75
Static Route	77
9.1 Overview	77
9.1.1 What You Can Do in the Static Route Screens	77
9.2 The Routing Table List Screen	78
9.2.1 The Static Route Screen	78
Network Address Translation (NAT)	81
10.1 Overview	81
10.1.1 What You Can Do in the NAT Screens	81
10.1.2 What You Need To Know About NAT	81
10.2 The NAT Screen	82
10.3 The DMZ Screen	83
10.4 The Virtual Server Screen	84
10.4.1 Configuring Servers Behind Port Forwarding (Example)	84
10.4.2 Configuring the Virtual Server Screen	85
10.5 The IP Address Mapping Screen	86
10.6 NAT Technical Reference	88
10.6.1 NAT Definitions	88
10.6.2 What NAT Does	89
10.6.3 How NAT Works	89
Quality of Service (QoS)	91
11.1 Overview	91
11.1.1 What You Can Do in the QoS Screens	92
11.1.2 What You Need to Know About QoS	92
11.2 The QoS Screen	93
11.2.1 The QoS Settings Summary Screen	95
11.3 QoS Technical Reference	96
11.3.1 IEEE 802.1p	96
11.3.2 IP Precedence	96
11.3.3 Automatic Priority Queue Assignment	97
ADSL	99
12.1 Overview	99
12.2 The ADSL Screen	99
Firewall	101
13.1 Overview	101
13.1.1 What You Can Do in the Firewall Screens	101
13.1.2 What You Need to Know About Firewall	101
13.2 The Firewall Screen	102
Access Management	103
Access Control	105
14.1 Access Control Overview	105
14.1.1 The Access Control Setup Screen	105
14.1.2 Access Control Interfaces	105
14.1.3 System Timeout	106
14.1.4 Configuring the Access Control Setup Screen	106
Filters	109
15.1 Overview	109
15.1.1 What You Can Do in the Filter Screens	109
15.1.2 What You Need to Know About Filtering	109
15.2 The IP/MAC Filter Screen	110
15.3 The Application Filter Screen	112
15.4 The URL Filter Screen	113
SNMP	115
16.1 Overview	115
16.1.1 Supported MIBs	116
16.2 The SNMP Screen	116
Universal Plug-and-Play (UPnP)	117
17.1 Overview	117
17.1.1 What You Can Do in the UPnP Screen	117
17.1.2 What You Need to Know About UPnP	117
17.2 The UPnP Screen	118
17.3 Installing UPnP in Windows Example	119
17.4 Using UPnP in Windows XP Example	122
Dynamic DNS Setup	129
18.1 Overview	129
18.1.1 What You Can Do in the DDNS Screen	129
18.1.2 What You Need To Know About DDNS	129
18.2 The Dynamic DNS Screen	130
CWMP	131
19.1 Overview	131
19.2 The CWMP Setup Screen	132
Maintenance	135
Administrator Settings	137
20.1 Overview	137
20.2 The Administrator Screen	137
Time Zone	139
21.1 Overview	139
21.2 The Time Zone Screen	139
Firmware	141
22.1 Overview	141
22.1.1 What You Need To Know About Firmware	141
22.1.2 Before You Begin	142
22.1.3 Firmware and Configuration Files Examples	142
22.2 The Firmware Screen	146
System Restart	149
23.1 Overview	149
23.2 The System Restart Screen	149
Diagnostic	151
24.1 Overview	151
24.2 The Diagnostic Screen	151
Troubleshooting and Product Specifications	153
Troubleshooting	155
25.1 Power, Hardware Connections, and LEDs	155
25.2 ZyXEL Device Access and Login	156
25.3 Internet Access	157
Product Specifications	159
26.1 Hardware Specifications	159
26.2 Firmware Specifications	159
26.3 Power Adaptor Specifications	162
Appendices and Index	165
Setting up Your Computer’s IP Address	167
Pop-up Windows, JavaScripts and Java Permissions	189
IP Addresses and Subnetting	197
Services	205
Legal Information	209

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Chapter 10 Network Address Translation (NAT)

P-660R-Tx v3s User’s Guide

10.3

The DMZ Screen

The DeMilitarized Zone (DMZ) provides a way for public servers (Web, e-mail, FTP, etc.) to

be visible to the outside world (while still being protected from DoS (Denial of Service)

attacks such as SYN flooding and Ping of Death). These public servers can also still be

accessed from the secure LAN.

By default the firewall allows traffic between the WAN and the DMZ, traffic from the DMZ to

the LAN is denied, and traffic from the LAN to the DMZ is allowed. Internet users can have

access to host servers on the DMZ but no access to the LAN, unless special filter rules

allowing access were configured by the administrator or the user is an authorized remote user.

Use this screen to configure a separate independent network from the LAN in which you can

put your servers. Click

Advanced Setup > NAT

DMZ

to open the following screen.

Figure 35

Advanced Setup > NAT > DMZ

The following table describes the labels in this screen.

Number of IPs

Select

Single

if you have just one public WAN IP address for your ZyXEL Device.

Select

Multiple

if you have multiple public WAN IP addresses for your ZyXEL

Device.

DMZ

Click this to configure the DMZ settings. See

Section 10.3 on page 83

for more

details.

Virtual Server

Click this to configure port forwarding rules for your ZyXEL Device. See

Section

10.4 on page 84

for more details.

IP Address

Mapping

This is available only when you select

Multiple

in the

Number of IPs

field. Click

this to configure address mapping rules for your ZyXEL Device. See

Section 10.5

on page 86

for more details.

Table 21

Network > NAT > General (continued)

LABEL

DESCRIPTION

Table 22

Advanced Setup > NAT > DMZ

LABEL

DESCRIPTION

DMZ setting for

This field displays the PVC you want to configure.

DMZ

Use this field to enable or disable DMZ.

DMZ Host IP

Address

Type the IP address for DMZ in dotted decimal notation.

Note: Make sure the IP addresses of the LAN, WAN and DMZ are

on separate subnets.

SAVE

Click this to save your settings.

BACK

Click this to return to the previous screen without saving.