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ZyXEL P-660H-T1 v3s User Guide - Page 105

Network Address Translation (NAT), 8.1 Overview, 8.1.1 What You Can Do in the NAT Screens, 8.1.2

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Page 105 highlights

CHAPTER 8 Network Address Translation (NAT) 8.1 Overview This chapter discusses how to configure NAT on the P-660H-T1v3s. NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a host in a packet, for example, the source address of an outgoing packet, used within one network to a different IP address known within another network. 8.1.1 What You Can Do in the NAT Screens • Use the NAT General Setup screen (Section 8.2 on page 107) to configure the NAT setup settings. • Use the Port Forwarding screen (Section 8.3 on page 108) to configure forward incoming service requests to the server(s) on your local network. • Use the Address Mapping screen (Section 8.4 on page 112) to change your P660H-T1v3s's address mapping settings. • Use the SIP ALG screen (Section 8.5 on page 115) to enable and disable the SIP (VoIP) ALG in the P-660H-T1v3s. 8.1.2 What You Need To Know About NAT Inside/Outside Inside/outside denotes where a host is located relative to the P-660H-T1v3s, for example, the computers of your subscribers are the inside hosts, while the web servers on the Internet are the outside hosts. Global/Local Global/local denotes the IP address of a host in a packet as the packet traverses a router, for example, the local address refers to the IP address of a host when the packet is in the local network, while the global address refers to the IP address of the host when the same packet is traveling in the WAN side. P-660H-T1v3s User's Guide 105

Section	Page
P-660H-T1v3s	1
About This User's Guide	3
Document Conventions	5
Safety Warnings	7
Contents Overview	9
Table of Contents	11
User’s Guide	19
Introduction	21
1.1 Overview	21
1.2 Ways to Manage the P-660H-T1v3s	21
1.2.1 Good Habits for Device Management	22
1.3 Applications	22
1.3.1 Internet Access	22
1.4 LEDs (Lights)	23
1.5 The RESET Button	24
1.5.1 Using the Reset Button	25
The Web Configurator	27
2.1 Overview	27
2.1.1 Accessing the Web Configurator	27
2.2 Main Screen	29
2.2.1 Title Bar	30
2.2.2 Navigation Panel	30
2.2.3 Main Window	32
2.2.4 Status Bar	32
Status Screens	33
3.1 Overview	33
3.2 The Status Screen	33
Tutorials	37
4.1 Overview	37
4.2 Configuring the MAC Address Filter	37
4.3 Setting Up NAT Port Forwarding	38
4.3.1 Default Server	39
4.3.2 Port Forwarding	40
4.3.3 Special Note	42
4.4 Access the P-660H-T1v3s Using DDNS	43
4.4.1 Registering a DDNS Account on www.dyndns.org	43
4.4.2 Configuring the P-660H-T1v3s for Remote Management	44
4.4.3 Testing the DDNS Setting	45
4.5 Configuring Static Route for Routing to Another Network	46
4.6 Multiple Public and Private IP Address Mappings	48
4.6.1 Full Feature NAT + Many-to-Many No Overload Mapping	49
4.6.2 Full Feature NAT + One-to-One Mapping	51
4.7 Multiple WAN Connections Example	52
4.8 Multiple PVCs with QoS	53
4.8.1 Configuring Multiple PVCs and ATM-QoS	54
Setup Wizard	57
5.1 Overview	57
5.2 Internet Access Wizard Setup	57
5.2.1 Manual Configuration	60
Technical Reference	67
WAN Setup	69
6.1 Overview	69
6.1.1 What You Can Do in the WAN Screens	69
6.1.2 What You Need to Know	69
6.1.3 Before You Begin	70
6.2 The Internet Access Setup Screen	71
6.2.1 Advanced Internet Access Setup	75
6.3 The More Connections Screen	77
6.3.1 More Connections Edit	78
6.3.2 Configuring More Connections Advanced Setup	81
6.4 WAN Technical Reference	82
6.4.1 Encapsulation	82
6.4.2 Multiplexing	83
6.4.3 VPI and VCI	84
6.4.4 IP Address Assignment	84
6.4.5 Keep Alive/Nailed-Up Connection (PPP)	84
6.4.6 NAT	85
6.5 Traffic Shaping	85
6.5.1 ATM Traffic Classes	86
LAN Setup	89
7.1 Overview	89
7.1.1 What You Can Do in the LAN Screens	89
7.1.2 What You Need To Know	89
7.1.3 Before You Begin	91
7.2 The IP Screen	91
7.2.1 The Advanced LAN IP Setup Screen	92
7.3 The DHCP Setup Screen	93
7.4 The Client List Screen	94
7.5 The IP Alias Screen	96
7.5.1 Configuring the LAN IP Alias Screen	96
7.6 LAN Technical Reference	98
7.6.1 LANs, WANs and the ZyXEL Device	98
7.6.2 DHCP Setup	98
7.6.3 DNS Server Addresses	99
7.6.4 LAN TCP/IP	99
7.6.5 RIP Setup	101
7.6.6 Multicast	101
7.6.7 Any IP	102
Network Address Translation (NAT)	105
8.1 Overview	105
8.1.1 What You Can Do in the NAT Screens	105
8.1.2 What You Need To Know About NAT	105
8.2 The NAT General Setup Screen	107
8.3 The Port Forwarding Screen	108
8.3.1 Configuring the Port Forwarding Screen	109
8.3.2 The Port Forwarding Rule Edit Screen	111
8.4 The Address Mapping Screen	112
8.4.1 The Address Mapping Rule Edit Screen	114
8.5 The SIP ALG Screen	115
8.6 NAT Technical Reference	116
8.6.1 NAT Definitions	116
8.6.2 What NAT Does	116
8.6.3 How NAT Works	117
8.6.4 NAT Application	118
8.6.5 NAT Mapping Types	118
8.6.6 Port Translation	119
Firewalls	121
9.1 Overview	121
9.1.1 What You Can Do in the Firewall Screens	121
9.1.2 What You Need to Know	121
9.2 The Firewall Screen	123
Filters	125
10.1 Overview	125
10.1.1 What You Can Do in the Filter Screens	125
10.1.2 What You Need to Know	125
10.2 The URL Filter Screen	126
10.3 The Application Filter Screen	127
10.4 The IP/MAC Filter Screen	128
Static Route	131
11.1 Overview	131
11.1.1 What You Can Do in the Static Route Screens	131
11.2 The Static Route Screen	132
11.2.1 Static Route Edit	133
802.1Q/1P	135
12.1 Overview	135
12.1.1 What You Can Do in the 802.1Q/1P Screens	135
12.1.2 What You Need to Know	135
12.2 The Group Setting Screen	137
12.2.1 Editing 802.1Q/1P Group Setting	138
12.3 The 802.1Q/1P Port Setting Screen	140
Quality of Service (QoS)	141
13.1 Overview	141
13.1.1 What You Can Do in the QoS Screens	142
13.1.2 What You Need to Know	142
13.2 The QoS Screen	143
13.2.1 The QoS Settings Summary Screen	145
13.3 QoS Technical Reference	146
13.3.1 IEEE 802.1p	146
13.3.2 IP Precedence	147
13.3.3 Automatic Priority Queue Assignment	147
Dynamic DNS Setup	149
14.1 Overview	149
14.1.1 What You Can Do in the DDNS Screen	149
14.1.2 What You Need To Know About DDNS	149
14.2 The Dynamic DNS Screen	150
Remote Management	151
15.1 Overview	151
15.1.1 What You Can Do in the Remote Management Screens	152
15.1.2 What You Need to Know	152
15.2 The WWW Screen	153
15.2.1 Configuring the WWW Screen	153
15.3 The Telnet Screen	154
15.4 The FTP Screen	155
15.5 The SNMP Screen	156
15.6 The DNS Screen	157
15.7 The ICMP Screen	158
Universal Plug-and-Play (UPnP)	161
16.1 Overview	161
16.1.1 What You Can Do in the UPnP Screen	161
16.1.2 What You Need to Know	161
16.2 The UPnP Screen	163
16.2.1 Installing UPnP in Windows	164
16.2.2 Using UPnP in Windows XP	166
System Settings	171
17.1 Overview	171
17.1.1 What You Can Do in the System Settings Screens	171
17.1.2 What You Need to Know	171
17.2 The General Screen	172
17.3 The Time and Date Screen	173
Logs	177
18.1 Overview	177
18.1.1 What You Can Do in the Log Screens	177
18.1.2 What You Need To Know	177
18.2 The System Log Screen	178
Tools	179
19.1 Overview	179
19.1.1 What You Can Do in the Tool Screens	179
19.1.2 What You Need To Know About Tools	180
19.1.3 Before You Begin	181
19.1.4 Tool Examples	181
19.2 The Firmware Screen	187
19.3 The Configuration Screen	189
19.4 The Restart Screen	192
Diagnostic	193
20.1 Overview	193
20.1.1 What You Can Do in the Diagnostic Screens	193
20.2 The General Diagnostic Screen	193
20.3 The DSL Line Diagnostic Screen	194
Troubleshooting	197
21.1 Power, Hardware Connections, and LEDs	197
21.2 P-660H-T1v3s Access and Login	198
21.3 Internet Access	200
Product Specifications	203
22.1 Hardware Specifications	203
22.2 Firmware Specifications	204
22.3 Standards Support	207
Appendices and Index	209
Setting up Your Computer’s IP Address	211
Pop-up Windows, JavaScripts and Java Permissions	235
IP Addresses and Subnetting	245
Services	255
Legal Information	259