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HotBrick Network Solutions
Special Applications
If you use Internet applications which have non-standard connections or port numbers, you may find
that they do not function correctly because they are blocked by the firewall in the Load Balancer. In
this case, you can define the application as a "Special Application" in order to make it work.
Note that the terms "Incoming" and "Outgoing" on this screen refer to traffic from the client (PC)
viewpoint
Figure 17 Special Applications
Settings – Special Applications
Select Special Application Name
Select Name Item
This lists any special applications, which are currently defined.
•
If adding a new Special Application, ignore this list.
Just enter your data in the
Special Application Configuration
section, and click the "Add" button.
•
To edit an existing entry, select it from this list, and click the "Select"
button. The data for the selected application will then be displayed
in the
Special Application Configuration
section.
Make any required changes, and then click the "Update" button.
Special Application Configuration
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HotBrick Network Solutions
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.
Buttons
•
Add
– Create a new Special Application entry.
•
Delete
– Delete the selected entry.
•
Update
– Save any changes you have made to the current entry.
•
Cancel
– Cancel any changes you have made since the last save
operation.
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 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.
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HotBrick Network Solutions
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 Load Balancer supports 2 types of service
providers:
•
Standard client, available at http://www.dyndns.org
Other sites may offer the same service, but can not be guaranteed to work.
•
TZO at
•
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 have a Domain Name (Host name) allocated to you.
3. Configure the
Dynamic DNS
screen, as described below.
4.
The Load Balancer 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 18 Dynamic DNS
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HotBrick Network Solutions
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.
•
Standard Client
– Select this to use the standard service (from
www.dyndns.org or other provider). You must configure the
Standard Client
section of this screen.
•
3322(in China)
– This is available in China. It is similar to “Standard client”
WAN Port
Binding
•
Select the WAN port on which the Dynamic DNS is used.
•
The "Force Update" button will update your record on the Dynamic DNS
Server immediately.
TZO Custom
Dynamic DNS
Service
If you have registered for this service, complete these fields.
•
Key
– Enter your Key, as recorded on the TZO Web site.
•
E-mail
– Enter your E-mail address, as recorded on the TZO Web site.
•
Domain
– Enter the domain name allocated to you by TZO.
Standard
Client or 3322
If you have registered for this service, complete these fields.
•
User Name
– Enter the user name recorded by the service provider.
•
Password
– Enter the password recorded by the service provider.
•
Verity Password
– Re-enter the password above.
•
Server
– Enter the name or IP address of the service provider's Server.
•
Host Name
- Enter the domain name allocated to you by the service provider.
Additional
Standard
Client or 3322
Settings
These options are available if using 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.
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HotBrick Network Solutions
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 19 Multi DMZ
36

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