This Chapter explains when and how to use the LevelOne Broadband Router's "Advanced" Features.
The following advanced features are provided.
This screen allows configuration of all advanced features relating to Internet access.
An example screen is shown below.
Most applications are supported transparently by the LevelOne Broadband Router. But sometimes it is not clear which PC should receive an incoming connection. This problem could arise with the following Conferencing & Telephony applications:
If this problem arises, you can use this screen to set which PC should receive an incoming connection, as described below.
Conferencing & Telephony |
|
Select an Application
|
This lists applications which may generate incoming connections, where the
destination (on your local LAN) is unknown.
|
Send incoming calls to
|
This lists the PCs on your LAN.
|
If you use Internet applications which use non-standard connections or port numbers, you may find that they do not function correctly because they are blocked by the LevelOne Broadband Router's firewall. In this case, you can define the application as a "Special Application".
This screen can be reached by clicking the Special Applications button on the Internet screen.
You can then define your Special Applications. You will need detailed information about the application; this is normally available from the supplier of the application.
Also, note that the terms "Incoming" and "Outgoing" on this screen refer to traffic from the client (PC) viewpoint
Figure 35: Special Applications Screen
Use this to Enable or Disable this Special Application as required.
|
|
Name
|
Enter a descriptive name to identify this Special Application.
|
Incoming
Ports |
|
Outgoing
Ports |
|
![]() |
If an application still cannot function correctly, try using the "DMZ" feature. |
This feature, if enabled, allows one (1) computer on your LAN to be exposed to all users on the Internet, allowing unrestricted 2-way communication between the "DMZ PC" and other Internet users or Servers.
![]() |
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. |
The URL Filter allows you to block access to undesirable Web site
Click the "Configure URL Filter" button on the Internet screen to access the URL Filter screen. An example screen is shown below.
Filter Strings |
|
Current Entries
|
This lists any existing entries. If you have not entered any values, this
list will be empty.
|
Add Filter String
|
To add an entry to the list, enter it here, and click the "Add"
button.
An entry may be a Domain name (e.g. www.trash.com) or simply a string. (e.g. ads/ ) Any URL which contains ANY entry ANYWHERE in the URL will be blocked. |
Buttons |
|
Delete/Delete All
|
Use these buttons to delete the selected entry or all entries, as required.
Multiple entries can be selected by holding down the CTRL key while
selecting.(On the Macintosh, hold the SHIFT key while selecting.)
|
Add
|
Use this to add the current Filter String to the site list.
|
This feature allows you to make Servers on your LAN accessible to Internet users. Normally, Internet users would not be able to access a server on your LAN because:
The "Virtual Server" feature solves these problems and allows Internet users to connect to your servers, as illustrated below.
Note that, in this illustration, both Internet users are connecting to the same IP Address, but using different protocols.
To Internet users, all virtual Servers on your LAN have the same IP Address. This IP Address is allocated by your ISP.
This address should be static, rather than dynamic, to make it easier for Internet users to connect to your Servers.
However, you can use the DDNS (Dynamic DNS) feature to allow users to connect to your Virtual Servers using a URL, instead of an IP Address.
The Virtual Servers screen is reached by the Virtual Servers link on the Advanced screen. An example screen is shown below.
Figure 38: Virtual Servers Screen
This screen lists a number of pre-defined Servers, and allows you to define your own Servers. Details of the selected Server are shown in the "Properties" area.
Data - Virtual Servers Screen
Servers |
|
Servers
|
This lists a number of pre-defined Servers, plus any Servers you have
defined. Details of the selected Server are shown in the "Properties"
area.
|
Properties |
|
Enable
|
Use this to Enable or Disable support for this Server, as required.
|
PC (Server)
|
Select the PC for this Server. The PC must be running the appropriate
Server software.
|
Protocol
|
Select the protocol (TCP or UDP) used by the Server.
|
Internal Port No.
|
Enter the port number which the Server software is configured to use.
|
External Port No.
|
The port number used by Internet users when connecting to the Server. This
is normally the same as the Internal Port Number. If it is different, this
device will perform a "mapping" or "translation" function, allowing the server
to use one port address, while clients use a different port address.
|
Buttons |
|
Defaults
|
This will delete any Servers you have defined, and set the pre-defined
Servers to use their default port numbers.
|
Disable All
|
This will cause the "Enable" setting of all Virtual Servers to be set
OFF.
|
Add
|
Add a new entry to the Virtual Server list, using the data shown in the
"Properties" area on screen. The entry selected in the list is ignored, and has
no effect.
|
Update
|
Update the current Virtual Server entry, using the data shown in the
"Properties" area on screen.
|
Delete
|
Delete the current Virtual Server entry. Note that the pre-defined Servers
can not be deleted. Only Servers you have defined yourself can be deleted.
|
Clear Form
|
Clear all data from the "Properties" area, ready for input of a new Virtual
Server entry.
|
![]() |
For each entry, the PC must be running the appropriate Server software. |
If the type of Server you wish to use is not listed on the Virtual Servers screen, you can define and manage your own Servers:
Create a new Server:
|
|
Modify (Edit) a Server:
|
|
Delete a Server:
|
Note: You can only delete Servers you have defined. Pre-defined
Server cannot be deleted.
|
![]() |
From the Internet, ALL Virtual Servers have the IP Address allocated by your ISP. |
Once configured, anyone on the Internet can connect to your Virtual Servers.
They must use the Internet IP Address (the IP Address allocated to you by your
ISP).
e.g.
http://203.70.212.52
ftp://203.70.212.52
It is more convenient if you are using a Fixed IP Address from your ISP,
rather than Dynamic. However, you can use the Dynamic DNS feature,
described in the following section, to allow users to connect to your Virtual
Servers using a URL, rather than an IP Address.
This free service 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, which makes it difficult to connect to you.
The Service works as follows:
Select Advanced on the main menu, then Dynamic DNS, to see a screen like the following:
Data - Dynamic DNS Screen
DDNS Service |
|
DDNS Service
|
|
DDNS Data |
|
User Name
|
Enter the "User name" specified at the www.dyndns.org Web site when you
registered.
|
Password
|
Enter your current password for www.dyndns.org
|
Domain
|
|
DDNS Status
|
This message is returned by the DDNS Server at www.dyndns.org
|
This feature allows you to manage the LevelOne Broadband Router via the Internet.
Figure 40: Remote Management Screen
Remote Management |
|
Enable Remote Management
|
Enable to allow management via the Internet. If Disabled, this device will
ignore management connection attempts from the Internet.
|
Port Number
|
Enter a port number between 1024 and 65535 (8080 is recommended). This port
number must be specified when you connect (see below).
Note: The default port number for HTTP (Web) connections is port 80,
but using port 80 here will prevent the use of a Web "Virtual Server" on your
LAN. (See Advanced Internet - Virtual Servers)
|
Current IP Address
|
You must use this IP Address to connect (see below).
This IP Address is allocated by your ISP. But if using a Dynamic IP
Address, this value can change each time you connect to your ISP. So it is
better if your ISP allocates you a Fixed IP Address.
|
To connect from a remote PC via the Internet
HTTP://123.123.123.123:8080
This example assumes the WAN IP Address is 123.123.123.123, and the port number is 8080.