Tenda W302R Router Manual PDF (Setup & Configuration Guide)

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Wireless-N Broadband Router

where you want to set the applications.

Protocol:

Select the protocol (TCP/UDP/Both)

for the application.

Well-Known Service Port:

Select the well-known

services as DNS, FTP from the drop-down menu

to add to the configured one above.

Delete/Enable:

Click to check it for corresponding

operation.

NOTE

:

If you set the virtual server of the

service port as 80, you must set the

Web management port on

Remote Web Management page to

be any value except 80 such as

8080. Otherwise, there will be a

conflict to disable the virtual server.

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Wireless-N Broadband Router

Port Range Forwarding

This section deals with the port range forwarding

mainly. The Port Range Forwarding allows you to

set up a range of public services such as web

servers, ftp, e-mail and other specialized Internet

applications to an assigned IP address on your

LAN.

Start/End Port:

Enter the start/end port number

which ranges the External ports used to set the

server or Internet applications.

IP Address:

Enter the IP address of the PC

where you want to set the applications.

Protocol:

Select the protocol (TCP/UDP/Both)

for the application.

Well-Known Service Port:

Select the well-known

services as DNS, FTP from the drop-down menu

to add to the configured one above.

Delete/Enable:

Click to check it for corresponding

operation.

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Wireless-N Broadband Router

Port Trigger Settings

When internal clients have access to external

server in the Internet for some application, the

clients request to connect with severs, and the

server will also ask to connect with client. But in

the default setting, router will refuse to accept any

request from WAN, which will bring

communication halt. The

port triggering

is used

to define triggering rules. So when clients have

access to the server, the device will open the port

through which the server sends the request to

client.

IP Range:

The internal IP address range for

requesting external server application.

Trigger Port:

The port range through which the

internal clients send request traffics to external

server with the range of 1

～

65535. Note that the

low number first and two blanks can keep the

same number if needed.

External Port:

The port range through which the

external server send request traffics to internal

clients with the range of 1

～

65535. Note that the

low number first and two blanks can keep the

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Wireless-N Broadband Router

44

same number if needed.

Apply:

To enable or disable the rule.

Add:

After edit the rule, click the “add” button to

add the current entry to port triggering list.

Apply:

Click “Apply” to activate the current rule.

Cancel:

Click “Cancel” to drop all setting saved

last time.

It is allowed to delete or modify the previous rules

in the list table.

Note: The special application can be only

used in one PC. If there is more than one PC

to open the same triggering port, the external

port will be connected to the last PC for the

application.

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Wireless-N Broadband Router

ALG Service Settings

ALG(Application Layer Gateway)

In the context of computer networking, an ALG or

application layer gateway consists of a security

component that augments a firewall or NAT

employed in a computer network. It allows

customized NAT traversal filters to be plugged

into the gateway to support address and port

translation for certain application layer

"control/data" protocols such as FTP, BitTorrent,

SIP, RTSP, file transfer applications etc.

In order for these protocols to work through NAT

or a firewall, either the application has to know

about an address/port number combination that

allows incoming packets, or the NAT has to

monitor the control traffic and open up port

mappings (firewall pinhole) dynamically as

required. Legitimate application data can thus be

passed through the security checks of the firewall

or NAT that would have otherwise restricted the

traffic for not meeting its limited filter criteria.

Usually allowing client applications to use

dynamic ephemeral TCP/ UDP ports to

communicate with the known ports used by the

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