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NAT Forwarding

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Chapter 11 NAT Forwarding Modem router's NAT (Network Address Translation) feature makes the devices in the LAN use the same public IP address to communicate in 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. The modem router can use a forwarding feature to remove the isolation of NAT and allow external internet hosts to intuitively communicate with the devices in the local network, thus enabling some special features. TP-Link modem 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: • Translate Address and Port by ALG • Share Local Resources over the Internet by Virtual Server • 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 Your Modem Router	6
1. 1. Product Overview	7
1. 2. Physical Appearance	7
1. 2. 1. Top Panel	7
1. 2. 2. Back Panel	8
Connect the Hardware	10
2. 1. Position Your Modem Router	11
2. 2. Connect Your Modem Router	11
Log In to Your Modem Router	13
Set Up Internet Connections	15
4. 1. Use Quick Setup Wizard	16
4. 2. Manually Set Up an Internet Connection	16
4. 3. Test Internet Connectivity	17
4. 4. Set Up an IPv6 Connection	18
4. 5. Wireless Router Mode	19
TP-Link Cloud Service	21
5. 1. Register a TP-Link ID	22
5. 2. Change Your TP-Link ID Information	22
5. 3. Manage the User TP-Link IDs	23
5. 3. 1. Add an TP-Link ID to Manage the Router	24
5. 3. 2. Remove TP-Link ID(s) From Managing the Router	24
5. 4. Manage the Router via TP-Link Tether App	25
IPTV	26
Guest Network	28
7. 1. Create a Network for Guests	29
7. 2. Customize Guest Network Options	29
Parental Controls	31
Bandwidth Control	35
Network Security	38
10. 1. Firewall & DoS Protection	39
10. 2. Service Filtering	40
10. 3. Access Control	41
10. 4. IP & MAC Binding	43
10. 5. IPv6 Firewall	44
NAT Forwarding	46
11. 1. Translate Address and Port by ALG	47
11. 2. Share Local Resources over the Internet by Virtual Server	48
11. 3. Open Ports Dynamically by Port Triggering	49
11. 4. Make Applications Free from Port Restriction by DMZ	50
11. 5. Make Xbox Online Games Run Smoothly by UPnP	51
VPN Server	53
12. 1. Use IPSec VPN to Access Your Home Network	54
Specify Your Network Settings	58
13. 1. LAN Settings	59
13. 1. 1. Change the LAN IP Address	59
13. 1. 2. Use the Modem Router as a DHCP Server	60
13. 1. 3. Reserve LAN IP Addresses	61
13. 2. IPv6 LAN Settings	61
13. 2. 1. Configure the RADVD Address Type	62
13. 2. 2. Configure the DHCPv6 Server Address Type	62
13. 3. Wireless Settings	63
13. 3. 1. Specify Basic Wireless Settings	63
13. 3. 2. Use WPS for Wireless Connection	65
13. 3. 3. Schedule Your Wireless Function	67
13. 3. 4. View Wireless Information	68
13. 3. 5. Advanced Wireless Settings	68
13. 4. Set Up a Dynamic DNS Service Account	70
13. 5. Interface Grouping	71
13. 6. Create Static Routes	72
13. 7. Set Up the IPv6 Tunnel	75
13. 7. 1. Use the Public IPv6 Tunnel Service-6to4	75
13. 7. 2. Specify the 6rd Tunnel with Parameters Provided by Your ISP	76
Administrate Your Network	77
14. 1. Set System Time	78
14. 2. Update the Firmware	79
14. 2. 1. Online Upgrade	79
14. 2. 2. Local Upgrade	80
14. 3. Back up and Restore Configuration Settings	80
14. 4. Change the Administrator Account	81
14. 5. Local Management	82
14. 6. Remote Management	83
14. 7. System Log	84
14. 8. CWMP Settings	85
14. 9. SNMP Settings	87

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Chapter

NAT Forwarding

Modem router’s NAT (Network Address Translation) feature makes the devices in the

LAN use the same public IP address to communicate in 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.

The modem router can use a forwarding feature to remove the isolation of NAT and

allow external internet hosts to intuitively communicate with the devices in the local

network, thus enabling some special features.

TP-Link modem 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:

•

Translate Address and Port by ALG

•

Share Local Resources over the Internet by Virtual Server

•

Open Ports Dynamically by Port Triggering

•

Make Applications Free from Port Restriction by DMZ

•

Make Xbox Online Games Run Smoothly by UPnP