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Settings – Special Applications

Special Application

Configuration

•

Enable

– Use this to Enable or Disable this Special

Application as required.

•

Name

– Enter a descriptive name to identify this

Special Application.

•

Outgoing Protocol

– Select the protocol used by this

application, when sending data to the remote server or

PC.

•

Outgoing Port Range

– Enter the beginning and end

of the range of port numbers used by the application

server, for data you send. If the application uses a

single port number, enter it in both fields

•

Incoming Protocol

– Select the protocol used by this

application, when receiving data from the remote

server or PC.

•

Incoming Port Range

– Enter the beginning and end

of the range of port numbers used by the application

server, for data you receive. If the application uses a

single port number, enter it in both fields.

Special Application

List

This shows details of all Special Applications which are

currently defined.

Using a Special Application on your PC

•

Once the

Special Applications

screen is configured correctly, you can use the

application on your PC normally. Remember that only one (1) PC can use each Special

application at any one time.

•

Also, when 1 PC is finished using a particular Special Application, there may need to

be a "Time-out" period before another PC can use the same Special Application.

•

If an application still cannot function correctly, try using the "DMZ" feature, if possible.

5.5

Dynamic DNS

Dynamic DNS is very useful when combined with the Virtual Server feature. It allows

Internet users to connect to your Virtual Servers using a URL, rather than an IP Address.

This also solves the problem of having a dynamic IP address. With a dynamic IP address,

your IP address may change whenever you connect to your ISP, which makes it difficult to

connect to you.

You must register for the Dynamic DNS service. The Router supports 3 types of service

providers:

y

Standard client, available at http://www.dyndns.org

Other sites may offer the same service, but can not be guaranteed to work.

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y

TZO at

y

3322 is available in China at http://www.3322.org

To use the Dynamic DNS feature

1.

Register for the service from your preferred service provider.

2.

Follow the service provider's procedure to get a Domain Name (Host name) allocated

to you.

3.

Configure the

Dynamic DNS

screen, as shown below.

4.

The Router will then automatically update your IP Address recorded by the Dynamic

DNS service provider.

5.

From the Internet, users will now be able to connect to your Virtual Servers (or DMZ

PC) using your Domain name.

Figure: Dynamic DNS

Settings – Dynamic DNS

Dynamic

DNS Service

Use this to Enable/Disable the Dynamic DNS feature, and select the

required service provider.

•

Disable

– Dynamic DNS is not used.

•

TZO

– Select this to use the TZO service (www.tzo.com). You

must configure the

TZO

section of this screen.

•

DynDNS

– Select this to use the DynDNS service (from

www.dyndns.org). You must configure the DynDNS section of

this screen.

•

3322(in China)

– This is available in China. It is similar to

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“DynDNS”

•

User Defined DDNS Server

– This is the user defined DDNS

server. If the DDNS other than TZO, dyndns.org and 3322.

Additional

Settings

These options are available to the standard client.

•

Enable Wildcard

– If selected, traffic sent to sub-domains (of

your Domain name) will also be forwarded to you.

•

Enable backup MX

– If enabled, you must enter the

Mail

Exchanger

address below.

•

Mail Exchanger

– If the setting above is enabled, enter the

address of the backup Mail Exchanger.

5.6

Multi DMZ

This feature allows each WAN port IP address to be associated with one (1) computer on

your LAN. All outgoing traffic from that PC will be associated with that WAN port IP address.

Any traffic sent to that IP address will be forwarded to the specified PC, allowing

unrestricted 2-way communication between the "DMZ PC" and other Internet users or

Servers.

Note:

The "DMZ PC" is effectively outside the Firewall, making it more vulnerable to attacks. For

this reason, you should only enable the DMZ feature when required

Figure: Multi DMZ

Settings – Multi DMZ

Multi DMZ Edit

•

Enable

– To activate or deactivate the current DMZ entry.

•

WAN

– The WAN port applied to the current DMZ entry.

•

Name

–

To identify the current DMZ entry.

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•

Public IP

– The public IP (or PPPoE session) that the current

DMZ entry is bound on.

•

Private IP (LAN)

– The IP address of the server in the DMZ

•

Access Group

– To specify which Access Group will be

applied. Each Access Group has its own access rules.

±

Default:

Applies the access rules for the Default Group.

±

Group1

~

Group4:

Applies the access rules for

Group1~Group4, respectively

•

Direction

– To specify in which direction the Access Group

will be applied: Outgoing,

Incoming,

Both.

Multi DMZ List

The List shows details of all DMZ that are currently defined.

5.7

UPnP

With UPNP (Universal Plug & Play) function, it can easily setup and configure an entire

network, enable discovery and control of the network devices and services.

Figure: UPnP

Settings – UPnP

UPnP Option

UPnP (Universal Plug & Play) function makes it easy to set up

and configure an entire network, enable discovery and control

of the network devices and services

UPnP Port Mapping

List

You can set the dynamic port mappings to Internet gateway

via UPnP on Windows XP. This will allow you make a

connection between applications and the defined device

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5.8

NAT Setup

NAT (Network Address Translation) is the technology which allows one (1) WAN (Internet)

IP address to be used by many LAN users.

Figure: NAT

Settings – NAT

NAT

Configuration

•

NAT Routing

–Enables or disables NAT routing by checking

or un-checking the checkbox. If you disable NAT routing, this

device will act as a Bridge or Static Router. Most features,

including Load Balance, will be unavailable. If some packets

have port numbers which cannot be translated for special

applications, you must input value in port range for

Disable

Port Translation

.

•

TCP Timeout

–The time during which TCP expects to

receive the acknowledgement from the destination. The

default is 300 seconds.

•

UDP Timeout

–The time during which UDP expects to

receive the acknowledgement from the destination. The

default is 120 seconds.

•

TCP Window Limit

–The maximum number of outstanding