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NAT Forwarding - port forwarding

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Chapter 10 NAT Forwarding Router's NAT (Network Address Translation) feature makes the devices in the LAN use the same public IP address to communicate on the Internet, which protects the local network by hiding IP addresses of the devices. However, it also brings about the problem that external host cannot initiatively communicate with the specified device in the local network. With forwarding feature the router can penetrate the isolation of NAT and allows the external hosts on the Internet to initiatively communicate with the devices in the local network, thus to realize some special functions. TP-LINK router includes four forwarding rules. If two or more rules are set, the priority of implementation from high to low is Virtual Servers, Port Triggering, UPnP and DMZ. This chapter contains the following sections: • Share Local Resources on the Internet by Virtual Servers • Open Ports Dynamically by Port Triggering • Make Applications Free from Port Restriction by DMZ • Make Xbox Online Games Run Smoothly by UPnP

Section	Page
About This Guide	5
Get to Know About Your Router	6
1. 1. Product Overview	7
1. 2. Main Features	8
1. 3. Panel Layout	9
1. 3. 1. Top View	9
1. 3. 2. The Back Panel	11
1. 4. Position Your router	11
Connect the Hardware	13
2. 1. Position Your Router	14
2. 2. Connect Your Router	14
Log into Your Router	17
Set Up Internet Connection	19
4. 1. Quick Setup	20
4. 2. Manually Configure Your Internet Connection Settings	23
4. 3. Setting Up an IPv6 Internet Connection	26
Guest Network	31
5. 1. Create Guest Network	32
5. 2. Customize Guest Network Options	32
USB Application	34
6. 1. Local Storage Sharing	35
6. 1. 1. Access the USB Disk	35
6. 1. 2. Customize Your Settings	37
6. 2. Remote Access via FTP Server	40
6. 2. 1. Access the USB Disk	40
6. 2. 2. Customize Your Settings	43
6. 3. Media Sharing	44
6. 3. 1. Access the USB Disk	45
6. 3. 2. Customize Your Settings	46
6. 4. Printer Sharing	47
6. 5. Offline Download	50
Parental Controls	53
QoS	57
8. 1. Prioritize Internet Traffic with QoS	58
8. 2. Update the Database	61
Network Security	63
9. 1. Protect the Network from Cyber Attacks	64
9. 2. Access Control	65
9. 3. IP & MAC Binding	67
NAT Forwarding	68
10. 1. Share Local Resources on the Internet by Virtual Servers	69
10. 2. Open Ports Dynamically by Port Triggering	70
10. 3. Make Applications Free from Port Restriction by DMZ	71
10. 4. Make Xbox Online Games Run Smoothly by UPnP	72
VPN Server	74
11. 1. Use OpenVPN to Access Your Home Network	75
11. 2. Use PPTP VPN to Access Your Home Network	76
Customize Your Network Settings	82
12. 1. Change the LAN Settings	83
12. 2. Configure to Support IPTV Service	83
12. 3. Specify DHCP Server Settings	85
12. 4. Set Up a Dynamic DNS Service Account	86
12. 5. Create Static Routes	87
12. 6. Specify Wireless Settings	89
12. 7. Use WPS for Wireless Connection	91
12. 7. 1. Set the Router’s PIN	91
12. 7. 2. Use the WPS Wizard for Wi-Fi Connections	91
Manage the Router	93
13. 1. Set Up System Time	94
13. 2. Test the Network Connectivity	95
13. 3. Upgrade the Firmware	97
13. 3. 1. Online Upgrade	97
13. 3. 2. Local Upgrade	97
13. 4. Backup and Restore Configuration Settings	98
13. 5. Change the Administrator Account	99
13. 6. Password Recovery	100
13. 7. Local Management	101
13. 8. Remote Management	102
13. 9. System Log	103
13. 10. Monitor the Internet Traffic Statistics	105
13. 11. Control LEDs	106
FAQ	107

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Chapter

NAT Forwarding

Router’s NAT (Network Address Translation) feature makes the devices in the LAN

use the same public IP address to communicate on the Internet, which protects the

local network by hiding IP addresses of the devices. However, it also brings about the

problem that external host cannot initiatively communicate with the specified device

in the local network.

With forwarding feature the router can penetrate the isolation of NAT and allows the

external hosts on the Internet to initiatively communicate with the devices in the local

network, thus to realize some special functions.

TP-LINK router includes four forwarding rules. If two or more rules are set, the priority

of implementation from high to low is Virtual Servers, Port Triggering, UPnP and DMZ.

This chapter contains the following sections:

•

Share Local Resources on the Internet by Virtual Servers

•

Open Ports Dynamically by Port Triggering

•

Make Applications Free from Port Restriction by DMZ

•

Make Xbox Online Games Run Smoothly by UPnP