ZyXEL ARMOR G1 User Guide - Page 92

Chapter 9 WAN

NBG6818 User’s Guide

92

The following table describes the labels in this screen.

9.7

Port Trigger Screen

Some services use a dedicated range of ports on the client side and a dedicated range of ports on the

server side. With regular port forwarding, you set a forwarding port in NAT to forward a service (coming

in from the server on the WAN) to the IP address of a computer on the client side (LAN). The problem is

that port forwarding only forwards a service to a single LAN IP address. In order to use the same service

on a different LAN computer, you have to manually replace the LAN computer's IP address in the

forwarding port with another LAN computer's IP address.

Trigger port forwarding addresses this problem. Trigger port forwarding allows computers on the LAN to

dynamically take turns using the service. The Zyxel Device records the IP address of a LAN computer that

sends traffic to the WAN to request a service with a specific port number and protocol (a "trigger" port).

When the Zyxel Device's WAN port receives a response with a specific port number and protocol

("open" port), the Zyxel Device forwards the traffic to the LAN IP address of the computer that sent the

request. After that computer’s connection for that service closes, another computer on the LAN can use

the service in the same manner. This way you do not need to configure a new IP address each time you

want a different LAN computer to use the application.

Table 27

Settings > Internet > Passthrough

LABEL

DESCRIPTION

ALG Setup

FTP

Select

Enable

to allow TCP packets with a specified port destination to pass through.

H.323

Select

Enable

to allow peer-to-peer H.323 calls.

SIP

Select

Enable

to make sure SIP (VoIP) works correctly with port-forwarding and address-

mapping rules.

SNMP

Select

Enable

to allow a manager station to manage and monitor the NBG6818 through the

network via SNMP.

RTSP

Select

Enable

to have the NBG6818 detect RTSP traffic and help build RTSP sessions through

its NAT.

IRC

Select

Enable

to allow clients to have real-time communications with others on the Internet.

VPN Passthrough

PPTP

Select

Enable

to allow VPN clients to make outbound PPTP connections. It is required in order

to connect to a PPTP VPN account. If

PPTP

is disabled, then when a client sends a request to

a VPN server, the server will reply to the NBG6818 and the NBG6818 will drop the request.

When

PPTP

is enabled, the NBG6818 will forward the reply from the VPN server to the client

that initiated the request, and the connection will establish successfully.

L2TP

Select

Enable

to allow VPN clients to make outbound L2TP connections. It is required in order

to connect to a L2TP VPN account. If

L2TP

is disabled, then when a client sends a request to a

VPN server, the server will reply to the NBG6818 and the NBG6818 will drop the request. When

L2TP

is enabled, the NBG6818 will forward the reply from the VPN server to the client that

initiated the request, and the connection will establish successfully.

IPSEC

Select

Enable

to allow VPN clients to make outbound IPSec connections. It is required in

order to connect to a IPSec VPN account. If

IPSEC

is disabled, then when a client sends a

request to a VPN server, the server will reply to the NBG6818 and the NBG6818 will drop the

request. When

IPSEC

is enabled, the NBG6818 will forward the reply from the VPN server to

the client that initiated the request, and the connection will establish successfully.

Apply

Click

Apply

to save your changes back to the NBG6818.

Cancel

Click

Cancel

to begin configuring this screen afresh.

Section	Page
ARMOR G1	1
Document Conventions	3
Contents Overview	4
Table of Contents	5
User’s Guide	10
Introduction	11
1.1 Overview	11
1.2 Applications	11
1.3 Ways to Manage the NBG6818	12
1.4 Good Habits for Managing the NBG6818	12
1.5 Resetting the NBG6818	13
1.5.1 How to Use the RESET Button	13
1.6 The WPS Button	13
1.7 LEDs	14
1.8 Desk Mounting	15
1.9 Wall Mounting	15
Wizard	17
2.1 Overview	17
2.2 Accessing the Wizard	17
The Web Configurator	27
3.1 Overview	27
3.2 Accessing the Web Configurator	27
3.3 Navigation Panel	29
3.3.1 Standard Mode Navigation Panel	30
3.3.2 Bridge Mode Navigation Panel	32
NBG6818 Modes	34
4.1 Overview	34
4.2 Modes	34
Standard Mode	36
5.1 Overview	36
5.2 What You Can Do	36
5.3 Standard Mode Status Screen	36
Bridge Mode	39
6.1 Overview	39
6.2 What You Can Do	39
6.3 Setting your NBG6818 to Bridge Mode	39
6.3.1 Accessing the Web Configurator in Bridge Mode	40
6.4 Bridge Mode Status Screen	41
Tutorials	42
7.1 Overview	42
7.2 Run a Speed Test	42
7.3 Configure the NBG6818’s WiFi Networks	43
7.4 Enable or Disable a WiFi Network	45
7.5 Add Clients to a Profile	46
7.6 Set a Profile’s WiFi Schedule	47
7.7 Pause or Resume Internet Access on a Profile	49
7.8 Turn on or off the NBG6818’s LED (Light)	50
7.9 Change Your NBG6818 Operating Mode	51
7.10 Configure a Port Forwarding Rule	52
Technical Reference	55
Applications	56
8.1 Overview	56
8.1.1 What You Can Do	56
8.1.2 What You Need To Know	56
8.1.3 Before You Begin	57
8.2 Parental Control	57
8.2.1 Device Screen	57
8.3 OpenVPN Server/Client	61
8.3.1 OpenVPN Server Screen	61
8.3.2 OpenVPN Account Screen	63
8.3.3 OpenVPN Client Screen	65
8.4 USB Application	67
8.4.1 SAMBA Server Screen	67
8.4.2 FTP Server Screen	69
8.4.3 USB Media Sharing Screen	71
8.5 Access Your Shared Files From a Computer	73
8.5.1 Using Windows Explorer	73
8.5.2 Using FTP Program	74
WAN	77
9.1 Overview	77
9.2 What You Can Do	77
9.3 What You Need To Know	78
9.3.1 Configuring Your Internet Connection	78
9.4 Internet Connection Screen	79
9.4.1 IPoE Encapsulation	79
9.4.2 PPPoE Encapsulation	82
9.4.3 PPTP Encapsulation	85
9.5 NAT & Port Forwarding Screen	87
9.5.1 Add Port Forwarding Rule Screen	89
9.6 Passthrough Screen	91
9.7 Port Trigger Screen	92
9.7.1 Add Port Trigger Rule Screen	94
9.8 Dynamic DNS Screen	95
9.9 UPnP Screen	96
9.9.1 Turning On UPnP in Windows 7 Example	97
9.9.2 Turning on UPnP in Windows 10 Example	99
Wireless LAN	102
10.1 Overview	102
10.1.1 What You Can Do	102
10.1.2 What You Should Know	103
10.2 Main WiFi Screen	106
10.3 Guest WiFi Screen	108
10.4 MAC Filter Screen	108
10.4.1 Add MAC Address Screen	109
10.5 WPS Screen	110
10.6 Scheduling Screen	112
LAN	113
11.1 Overview	113
11.2 What You Can Do	113
11.3 What You Need To Know	113
11.4 LAN IP Screen	114
11.4.1 Static DHCP Table-Add/Edit Rule Screen	117
11.4.2 Configure LAN Screen in Bridge Mode	119
11.5 IPv6 LAN Screen	120
Security	123
12.1 Overview	123
12.1.1 What You Can Do	123
12.1.2 What You Need To Know	123
12.2 IPv4 Firewall Screen	124
12.2.1 IPv4 Firewall-Add Rule Screen	126
12.3 IPv6 Firewall Screen	127
12.3.1 IPv6 Firewall-Add Rule Screen	128
System	130
13.1 Overview	130
13.2 What You Can Do	130
13.3 Status Screen	130
13.4 General Setting Screen	133
13.5 Remote Access Screen	135
13.6 Maintenance Screen	136
13.7 Operating Mode Screen	137
13.8 Logs Screen	139
Troubleshooting	141
14.1 Overview	141
14.2 Power, Hardware Connections, and LEDs	141
14.3 NBG6818 Access and Login	142
14.4 Internet Access	143
14.5 Resetting the NBG6818 to Its Factory Defaults	144
14.6 Wireless Connections	144
14.7 USB Device Problems	146
Customer Support	147
Setting Up Your Computer’s IP Address	153
Common Services	172
Legal Information	175

ZyXEL ARMOR G1 User Guide - Page 92

Port Trigger Screen

Page 92 highlights