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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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32
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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33
“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

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