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Technical Reference, Network Address Translation

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Chapter 10 Network Address Translation The following table describes the labels on this screen. Table 33 Network > NAT > Port Triggering LABEL DESCRIPTION Port Triggering Status Nat Port Trigger Click Enable radio button to enable NAT Port Trigger or Disable to inactivate it. Apply Click Apply button to apply the NAT Port Trigger status you choose above. Add Application Rule User-defined Type a unique name (up to 15 characters) for identification purposes. All characters are Application Name permitted - including spaces. Start Match Port Enter the starting port in a range of port numbers that causes (or triggers) the NBG6615 to record the IP address of the LAN computer that sent the traffic to a server on the WAN. End Match Port Enter the ending port in a range of port numbers that causes (or triggers) the NBG6615 to record the IP address of the LAN computer that sent the traffic to a server on the WAN. Trigger Protocol Specify the protocol (UDP, TCP or UDP/TCP) that causes (or triggers) the NBG6615 to record the IP address of the LAN computer that sent the traffic to a server on the WAN. Start Related Port Enter the starting port in a range of port numbers that a server on the WAN uses when it sends out a particular service. The NBG6615 forwards the traffic with this starting port to the client computer on the LAN that requested the service. End Related Port Enter the ending port in a range of port numbers that a server on the WAN uses when it sends out a particular service. The NBG6615 forwards the traffic with this ending port to the client computer on the LAN that requested the service. Open Protocol Specify the protocol (UDP, TCP or UDP/TCP) that a server on the WAN uses when it sends out a particular service. Apply Click Apply to save your changes back to the NBG6615. Reset Click Reset to begin configuring this screen afresh. Application Rules Summary Server Name This field displays the name of the application rule. Trigger Protocol This field displays the protocol that causes (or triggers) the NBG6615 to record the IP address of the LAN computer that sent the traffic to a server on the WAN. Port This field displays the port(s) that causes (or triggers) the NBG6615 to record the IP address of the LAN computer that sent the traffic to a server on the WAN. Open Protocol This field displays the protocol a server on the WAN uses when it sends out a particular service. Related Port This field displays the port(s) a server on the WAN uses when it sends out a particular service. The EMG2926-Q10A forwards the traffic with this port (or range of ports) to the client computer on the LAN that requested the service. Action Click Delete to remove the rule. 10.6 Technical Reference The following section contains additional technical information about the NBG6615 features described in this chapter. NBG6615's User's Guide 91

Section	Page
NBG6615	1
Contents Overview	3
Table of Contents	4
User’s Guide	10
Introduction	11
1.1 Overview	11
1.2 Securing the NBG6615	12
1.3 LEDs	13
1.4 The WPS Button	13
1.4.1 Using the WPS Button	14
1.5 Reboot/Reset Button	14
1.6 Wall Mounting	14
The Web Configurator	16
2.1 Overview	16
2.2 Accessing the Web Configurator	16
2.3 Resetting the NBG6615	18
Connection Wizard	20
3.1 Wizard Setup	20
3.1.1 Static IP Connection	22
3.1.2 DHCP Client	22
3.1.3 PPPoE Connection	23
3.1.4 PPTP Connection	24
Modes	28
4.1 Overview	28
4.2 Setting your NBG6615 to Router Mode	29
4.2.1 Status Screen (Router Mode)	29
4.2.2 Router Mode Navigation Panel	33
4.3 Setting your NBG6615 to AP Mode	34
4.3.1 Status Screen (AP Mode)	35
4.3.2 AP Navigation Panel	37
Tutorials	39
5.1 Overview	39
5.2 How to Connect to the Internet from an AP	39
5.3 Configure Wireless Security Using WPS on both your NBG6615 and Wireless Client	39
5.3.1 Push Button Configuration	40
5.3.2 PIN Configuration	41
5.4 Enable and Configure Wireless Security without WPS on your NBG6615	43
5.4.1 Configure Your Wireless Client	44
5.5 Using Multiple SSIDs on the NBG6615	46
5.5.1 Configuring Security Settings of Multiple SSIDs	47
5.6 Installing UPnP in Windows 7 Example	50
5.7 Using Bandwidth Management on the NBG6615	50
Technical Reference	53
Wireless LAN	54
6.1 Overview	54
6.2 What You Can Do	54
6.3 What You Should Know	55
6.3.1 Wireless Security Overview	55
6.3.2 MBSSID	55
6.3.3 MAC Address Filter	56
6.3.4 Encryption	56
6.3.5 WPS	56
6.4 General Wireless LAN Screen	57
6.4.1 No Security	58
6.4.2 WPA2-PSK or WPA-PSK/WPA2-PSK	58
6.5 MAC Filter	59
6.6 Wireless LAN Advanced Screen	60
6.7 WPS Screen	61
6.8 WPS Station Screen	63
6.9 Scheduling Screen	63
6.10 MBSSID Screen	64
WAN	67
7.1 Overview	67
7.2 What You Need To Know	67
7.2.1 Configuring Your Internet Connection	67
7.3 Internet Connection Screen	68
7.3.1 Static IP	68
7.3.2 DHCP Client	70
7.3.3 PPPoE Connection	71
7.3.4 PPTP Connection	73
7.4 Advanced Screen	75
LAN	77
8.1 Overview	77
8.2 What You Need To Know	77
8.2.1 IP Address and Subnet Mask	78
8.2.2 DNS Server Address Assignment	78
8.2.3 IP Pool Setup	79
8.2.4 LAN TCP/IP	79
8.3 LAN IP Screen	79
DHCP Server	81
9.1 Overview	81
9.2 What You Can Do	81
9.3 What You Need To Know	81
9.4 General Screen	81
9.5 Static DHCP Screen	82
9.6 Client List Screen	83
Network Address Translation	85
10.1 Overview	85
10.2 What You Can Do	85
10.2.1 What You Need To Know	86
10.3 General NAT Screen	87
10.4 NAT Application Screen	88
10.5 Port Triggering Screen	90
10.6 Technical Reference	91
10.6.1 NAT Port Forwarding: Services and Port Numbers	92
10.6.2 NAT Port Forwarding Example	92
10.6.3 Trigger Port Forwarding	92
10.6.4 Trigger Port Forwarding Example	93
10.6.5 Two Points To Remember About Trigger Ports	93
Dynamic DNS	94
11.1 Overview	94
11.2 Dynamic DNS Screen	94
Static Route	96
12.1 Overview	96
12.2 IP Static Route Screen	96
Firewall	99
13.1 Overview	99
13.2 What You Can Do	99
13.3 What You Need To Know	100
13.3.1 About the NBG6615 Firewall	100
13.3.2 VPN Pass Through Features	100
13.4 General Firewall Screen	100
13.5 Services Screen	101
13.6 MAC Filter Screen	102
Content Filter	104
14.1 Overview	104
14.2 What You Can Do	104
14.3 Filter Screen	104
Remote Management	106
15.1 Overview	106
15.1.1 Remote Management Limitations	107
15.1.2 Remote Management and NAT	107
15.1.3 System Timeout	107
15.2 WWW Screen	107
Universal Plug-and-Play (UPnP)	109
16.1 Overview	109
16.2 What You Need to Know	109
16.3 Configuring UPnP	110
16.4 Installing UPnP in Windows 7 Example	110
16.4.1 Using UPnP in Windows XP Example	112
16.4.2 Web Configurator Easy Access	114
Bandwidth MGMT	117
17.1 Overview	117
17.2 What You Can Do	117
17.3 What You Need To Know	117
17.4 Bandwidth MGMT Screen	117
17.5 Advanced Screen	118
System	120
18.1 Overview	120
18.2 What You Can Do	120
18.3 System General Screen	120
18.4 Time Setting Screen	121
Logs	123
19.1 Overview	123
19.2 What You Need to Know	123
19.3 View Log Screen	123
Tools	125
20.1 Overview	125
20.2 What You Can Do	125
20.3 Firmware Upload Screen	125
20.4 Configuration Screen	127
20.4.1 Backup Configuration	127
20.4.2 Restore Configuration	127
20.4.3 Back to Factory Defaults	128
20.5 Restart Screen	128
Sys OP Mode	130
21.1 Overview	130
21.2 General Screen	130
Language	132
22.1 Language Screen	132
Troubleshooting and Appendices	133
Troubleshooting	134
23.1 Power, Hardware Connections, and LEDs	134
23.2 NBG6615 Access and Login	135
23.3 Internet Access	136
23.4 Resetting the NBG6615 to Its Factory Defaults	137
23.5 Wireless Problems	138
IP Addresses and Subnetting	139
Pop-up Windows, JavaScripts and Java Permissions	148
Setting Up Your Computer’s IP Address	157
Wireless LANs	184
Common Services	197
Legal Information	200
Customer Support	207

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Chapter 10 Network Address Translation

NBG6615’s User’s Guide

The following table describes the labels on this screen.

10.6

Technical Reference

The following section contains additional technical information about the NBG6615 features described

in this chapter.

Table 33

Network > NAT > Port Triggering

LABEL

DESCRIPTION

Port Triggering Status

Nat Port Trigger

Click

Enable

radio button to enable NAT Port Trigger or

Disable

to inactivate it.

Apply

Click

Apply

button to apply the NAT Port Trigger status you choose above.

Add Application Rule

User-defined

Application Name

Type a unique name (up to 15 characters) for identification purposes. All characters are

permitted - including spaces.

Start Match

Port

Enter the starting port in a range of port numbers that causes (or triggers) the NBG6615 to

record the IP address of the LAN computer that sent the traffic to a server on the WAN.

End Match

Port

Enter the ending port in a range of port numbers that causes (or triggers) the NBG6615 to

record the IP address of the LAN computer that sent the traffic to a server on the WAN.

Trigger

Protocol

Specify the protocol (

UDP

TCP

UDP/TCP

) that causes (or triggers) the NBG6615 to record the

IP address of the LAN computer that sent the traffic to a server on the WAN.

Start Related

Port

Enter the starting port in a range of port numbers that a server on the WAN uses when it sends

out a particular service. The NBG6615 forwards the traffic with this starting port to the client

computer on the LAN that requested the service.

End Related

Port

Enter the ending port in a range of port numbers that a server on the WAN uses when it sends

out a particular service. The NBG6615 forwards the traffic with this ending port to the client

computer on the LAN that requested the service.

Open Protocol

Specify the protocol (

UDP

TCP

UDP/TCP

) that a server on the WAN uses when it sends out a

particular service.

Apply

Click

Apply

to save your changes back to the NBG6615.

Reset

Click

Reset

to begin configuring this screen afresh.

Application Rules Summary

Server Name

This field displays the name of the application rule.

Trigger Protocol

This field displays the protocol that causes (or triggers) the NBG6615 to record the IP address of

the LAN computer that sent the traffic to a server on the WAN.

Port

This field displays the port(s) that causes (or triggers) the NBG6615 to record the IP address of

the LAN computer that sent the traffic to a server on the WAN.

Open Protocol

This field displays the protocol a server on the WAN uses when it sends out a particular service.

Related Port

This field displays the port(s) a server on the WAN uses when it sends out a particular service.

The EMG2926-Q10A forwards the traffic with this port (or range of ports) to the client computer

on the LAN that requested the service.

Action

Click

Delete

to remove the rule.