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User Manual

Figure 4-33

Add or Modify a Virtual Server Entry

)

Note:

If your computer or server has more than one type of available service, please select

another service, and enter the same IP Address for that computer or server.

To modify or delete an existing entry:

1.

Click the

Modify

in the entry you want to modify. If you want to delete the entry, click

the

Delete

.

2.

Modify the information.

3.

Click the

Save

button.

Click the

Enable/Disabled All

button to make all entries enabled/disabled.

Click the

Delete All

button to delete all entries.

Click the

Next

button to go to the next page and click the

Previous

button to return the

previous page.

)

Note:

If you set the service port of the virtual server as 80, you must set the Web management

port on “

Security

→

Remote Management

” page to be any other value except 80 such

as 8080. Otherwise there will be a conflict to disable the virtual server.

4.8.2 Port Triggering

Choose menu “

Forwarding

→

Port Triggering

”, you can view and add port triggering in

the screen as shown in Figure 4-34. Some applications require multiple connections, like

Internet games, video conferencing, Internet calling and so on. These applications cannot

work with a pure NAT Router. Port Triggering is used for some of these applications that

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User Manual

can work with an NAT Router.

Figure 4-34

Port Triggering

Once the Router is configured, the operation is as follows:

1.

A local host makes an outgoing connection using a destination port number defined

in the Trigger Port field.

2. The Router records this connection, opens the incoming port or ports associated

with this entry in the Port Triggering table, and associates them with the local host.

3. When necessary

，

the external host will be able to connect to the local host using

one of the ports defined in the

Incoming Ports

field.

¾

Trigger Port -

The port for outgoing traffic. An outgoing connection using this port

will trigger this rule.

¾

Trigger Protocol -

The protocol used for Trigger Ports, either

TCP

,

UDP

, or

All

(all

protocols supported by the Router).

¾

Incoming Ports Range -

The port or port range used by the remote system when it

responds to the outgoing request. A response using one of these ports will be

forwarded to the PC that triggered this rule. You can input at most 5 groups of ports

(or port sections). Every group of ports must be set apart with ",". For example,

2000-2038, 2050-2051, 2085, 3010-3030.

¾

Incoming Protocol -

The protocol used for Incoming Ports Range, either

TCP

or

UDP

, or

ALL

(all protocols supported by the Router).

¾

Status -

The status of this entry, either

Enabled

or

Disabled

.

To add a new rule, follow the steps below.

1.

Click the

Add New…

button, the next screen will pop-up as shown in Figure 4-35.

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User Manual

2.

Select a common application from the

Common Applications

drop-down list, then

the

Trigger Port

field and the

Incoming Ports

field will be automatically filled. If the

Common Applications

do not have the application you need, enter the

Trigger

Port

and the

Incoming Ports

manually.

3.

Select the protocol used for Trigger Port from the

Trigger Protocol

drop-down list,

either

TCP

,

UDP

, or

All

.

4.

Select the protocol used for Incoming Ports from the

Incoming Protocol

drop-down

list, either

TCP

or

UDP

, or

All.

5.

Select

Enable

in

Status

field.

6.

Click the

Save

button to save the new rule.

Figure 4-35

Add or Modify a Port Triggering Entry

To modify or delete an existing entry:

1.

Click the

Modify

in the entry you want to modify. If you want to delete the entry, click

the

Delete

.

2.

Modify the information.

3.

Click the

Save

button.

Click the

Enable All

button to make all entries enabled

Click the

Disabled All

button to make all entries disabled.

Click the

Delete All

button to delete all entries

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User Manual

)

Note:

1)

When the trigger connection is released, the corresponding opening ports will be

closed.

2)

Each rule is allowed to be used only by one host on LAN synchronously. The trigger

connection of other hosts on LAN will be refused.

3)

Incoming Port Range cannot overlap each other.

4.8.3 DMZ

Choose menu “

Forwarding

→

DMZ

”, you can view and configure DMZ host in the screen

as shown in Figure 4-36. The DMZ host feature allows one local host to be exposed to the

Internet for a special-purpose service such as Internet gaming or videoconferencing. DMZ

host forwards all the ports at the same time. Any PC whose port is being forwarded must

have its DHCP client function disabled and should have a new static IP Address assigned

to it because its IP Address may be changed when using the DHCP function.

Figure 4-36

DMZ

To assign a computer or server to be a DMZ server:

1.

Check the

Enable

radio button

2.

Enter the IP Address of a local host in the

DMZ Host IP Address

field

3.

Click the

Save

button.

)

Note:

After you set the DMZ host, the firewall related to the host will not work.

4.8.4 UPnP

Choose menu “

Forwarding

→

UPnP

”, you can view the information about

UPnP

(Universal Plug and Play) in the screen as shown in Figure 4-37. The UPnP feature allows

the devices, such as Internet computers, to access the local host resources or devices as

needed. UPnP devices can be automatically discovered by the UPnP service application

on the LAN.

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Figure 4-37 UPnP

¾

Current UPnP Status -

UPnP can be enabled or disabled by clicking the

Enable

or

Disable

button.

¾

Current UPnP Settings List -

This table displays the current UPnP information.

•

App Description -

The description provided by the application in the UPnP

request.

•

External Port

-

The external port the Router opens for the application.

•

Protocol -

The type of protocol the Router opens for the application.

•

Internal Port

-

The Internal port the Router opens for local host.

•

IP Address

-

The IP address of the UPnP device that is currently accessing the

Router.

•

Status -

The status of the port is displayed here. “Enabled” means that the port

is still active. Otherwise, the port is inactive.

Click

Refresh

to update the Current UPnP Settings List.

4.9 Security

Figure 4-38 The Security menu

There are four submenus under the Security menu as shown in Figure 4-38:

Basic

Security

,

Advanced Security

,

Local Management

and

Remote Management.

Click

any of them, and you will be able to configure the corresponding function.

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