Chapter 5 NAT Forwarding

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This chapter contains the following sections:

• UPnP Settings Overview

• Port Forwarding

• DMZ

• Hardware NAT

UPnP Settings

UPnP (Universal Plug and Play) is a network protocol designed to make connecting devices simpler and more automated. Using the UPnP protocol, devices can automatically discover each other on the network and establish communication connections without requiring manual configuration or setup.

UPnP allows devices to share resources such as files, printers, and other multimedia content. The UPnP protocol is widely used in home networks and office environments to facilitate communication and interaction between devices.

1. Access More>NAT Forwarding>UPnP.
   
2. Set ON/OFF UPnP.
   
3. Click SAVE to finish configuration.
   

note

The computer operation system and application program you used need to support the UPnP function.

Port Forwarding

Port forwarding is a network technology. It maps a specific port on a public network to a specified server on the local network, allowing Internet users to access the local network server’s service by accessing the port.

1. Access More>NAT Forwarding>Port Forwarding.
   
2. Click Add.
   
3. Enter the parameters of Server IP, External Port, and Internal Port.
   
4. Select Communication Protocol.
   
5. Click Bind to finish the configuration.
   

DMZ

Enable DMZ（Demilitarized Zone）management function, only enter one IP address that connects this device, then this device can be DMZ host. So this device can be accessed via external network and open all ports to improve fluency of corresponding communication. Please note security software and firewall on this host need to be closed temporarily when you use this function. So please consider using this function carefully.

note

DMZ is suitable for use when you are not sure of the ports that need to be opened. Computers will be completely exposed to the WAN after opening DMZ Host, which may bring security risks to computers. So please do not open it easily. Close it in time if you do not need to use DMZ Host.

1. Set the computer to a Static IP such as 192.168.20.215.
   
2. Access More>NAT Forwarding>DMZ.
   
3. Open DMZ Host.
   
4. Enter the IP address of the corresponding computer (192.168.20.215).
   
5. Click SAVE to finish the configuration.
   

Hardware NAT

Data is forwarded by hardware instead of being processed by the CPU after enabling Hardware NAT, which can improve the device’s performance. Turn off NAT if you need to calculate throughput rate, usage statistics of CPU and RAM.

1. Access More>NAT Forwarding>Hardware NAT.
   
2. Open Hardware NAT.
   
3. Click SAVE to finish the configuration.