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Chapter 8
Advanced Configuration

This Chapter explains the settings available via the Advanced configuration section of the "Advanced" menu.

Overview

Normally, it is not necessary to use these screens, or change any settings. These screens and settings are provided to deal with non-standard situations, or to provide additional options for advanced users.

The settings available are:

PC Database
This is the list of PCs shown when you select the "DMZ PC" or a "Virtual Server". This database is maintained automatically, but you can add and delete entries for PCs which use a Fixed (Static) IP Address.
Options
Enable or Disable various options.
Printer Port
Configure the Printer port for use with AppleTalk or Unix. (For Windows, no configuration is required or possible.)
MAC Address
Set the MAC (hardware) address used on the Internet (WAN port) interface. This is required only if your ISP has recorded the MAC (hardware) address you should use.
Routing
Only required if your LAN has other Routers or Gateways.

 

PC Database Screen

The PC Database is used whenever you need to select a PC (e.g. for the "DMZ" PC). It eliminates the need to enter IP addresses. An example PC Database screen is shown below.

Figure 44: PC Database Screen

Data - PC Database Screen

PC Database

PCs
This lists all current entries. Data displayed is name (IP Address) type. The "type" indicates whether the PC is connected to the LAN or WLAN (Wireless LAN).
Name
If adding a new PC to the list, enter its name here. It is best if this matches the PC's "hostname".
IP Address
Enter the IP Address of the PC. The PC will be sent a "ping" to determine its hardware address. If the PC is not available (not connected, or not powered On) you will not be able to add it.

Buttons

Add
This will add the new PC to the list. The PC will be sent a "ping" to determine its hardware address. If the PC is not available (not connected, or not powered On) you will not be able to add it.
Delete
Delete the selected PC from the list. This should be done in 2 situations:
  • The PC has been removed from your LAN.
  • The entry is incorrect.
Refresh
Update the data on screen.
Generate Report
Display a read-only list showing full details of all entries in the PC database.

Options

This screen allows advanced users to enter or change a number of settings. For normal operation, there is no need to use this screen or change any settings.

An example Options screen is shown below.

Figure 45: Options Screen

Data - Options Screen

Backup DNS

IP Address
Enter the IP Address of the DNS (Domain Name Servers) here. These DNS will be used only if the primary DNS is unavailable.

TFTP

Enable Firmware Upgrade using TFTP
  • If enabled, TFTP (Trivial FTP) can be used to upgrade the firmware in this device. This is normally not required; a Windows utility is available for this purpose.
  • You must obtain the firmware upgrade file first; instructions for using TFTP will be available with the upgrade.

UPnP

Enable UPnP
Services
  • UPnP (Universal Plug and Play) allows automatic discovery and configuration of equipment attached to your LAN. UPnP is by supported by Windows ME, XP, or later.
  • If Enabled, this device will be visible via UPnP.
  • If Disabled, this device will not be visible via UPnP.
Allow Configuration...
  • If checked, then UPnP users can change the configuration.
  • If Disabled, UPnP users can only view the configuration. But currently, this restriction only applies to users running Windows XP, who access the Properties via UPnP. (e.g. Right - click the LevelOne Wireless Broadband Router in My Network Places, and select Properties)
Allow Internet access to be disabled
  • If checked, then UPnP users can disable Internet access via this device.
  • If Disabled, UPnP users can NOT disable Internet access via this device. But currently, this restriction only applies to users running Windows XP, who access the Properties via UPnP. (e.g. Right - click the LevelOne Wireless Broadband Router in My Network Places, and select Properties)

Firewall

Enable DoS
Firewall
If enabled, DoS (Denial of Service) attacks will be detected and blocked. The default is enabled. It is strongly recommended that this setting be left enabled.
Note:
  • A DoS attack does not attempt to steal data or damage your PCs, but overloads your Internet connection so you cannot use it - the service is unavailable.
  • The LevelOne Wireless Broadband Router uses "Stateful Inspection" technology. This system can detect situations where individual TCP/IP packets are valid, but collectively they become a DoS attack.
Threshold
This setting affects the number of "half-open" connections allowed.
  • A "half-open" connection arises when a remote client contacts the Server with a connection request, but then does not reply to the Server's response.
  • While the optimum number of "half-open" connections allowed (the "Threshold") depends on many factors, the most important factor is the available bandwidth of your Internet connection.
  • Select the setting to match the bandwidth of your Internet connection.

 

Printer Port

Normally, these settings do not need to be changed.

Figure 46: Printer Port Screen

AppleTalk

AppleTalk zone
This determines which Apple systems can gain access to this printer. The default value is *, which allows access by all systems. If you enter another zone name, only Apple systems in that zone will be able to access the printer.
Printer Object Type
Sets the type of printer attached. The default setting is "LaserWriter".
If the "Printer Object Type" is incorrect, the printer will not be visible from your Apple system.
Communication
Protocol
You must use the same setting as your Macintosh.

Logical Printers

No (L1, L2, L3)
Logical printer configuration is only required if using LPD printing under Linux or Unix. Otherwise, these settings are ignored
There are 3 Logical Printers (Ports), named L1, L2, and L3.
These names cannot be changed, and must be used when selecting the logical printer from your Unix system.
Pre-string (HEX)
Enter (in HEX) the series of printer commands to be sent to the attached printer BEFORE each print job.
Post-string (HEX)
Enter (in HEX) the series of printer commands to be sent to the attached printer AFTER each print job.
LF to CR/LF
If checked, Unix-style LF (line feed) characters at the end of each line will be converted to CR/LF (carriage return/line feed) pairs, as used in MSDOS and Windows.

MAC Address

The MAC (hardware) address is a low-level network identifier. It may be called "MAC Address", "Hardware Address", or "Physical Address". On a PC, this address is associated with the Network card or adapter. The address on the MAC Address screen is the address on the Internet (WAN port) interface, and has no effect on the LAN interface.

MAC Address Screen

Select MAC Address from the Advanced menu to reach a screen like the example below.

Figure 47: MAC address screen

Data - MAC address Screen

MAC (hardware) Address
The current MAC (hardware) address is displayed.
If your ISP has recorded a Hardware Address, you can "spoof" that address by entering it in the address field. The hardware address consists of 12 characters, where each character is a digit (0..9) or a character between A and F.

Buttons

Default
Inserts the default MAC address into the MAC address field. You must click "Save" to actually change the address used.
Copy from PC
Inserts the MAC address from your PC into the MAC address field. You must click "Save" to actually change the address used.
Save
Save your changes to the LevelOne Wireless Broadband Router.
Cancel
Reverse any changes made since the last "Save".

 

If the MAC address is changed, the LevelOne Wireless Broadband Router must restart.

 

Routing

 

Overview

 

Routing Screen

The routing table is accessed by the Routing link on the Advanced screen.

Using this Screen

Generally, you will use either RIP (Routing Information Protocol) OR the Static Routing Table, as explained above, although is it possible to use both methods simultaneously.

Static Routing Table

 

Figure 48: Routing Screen

Data - Routing Screen

RIP

Enable RIP
Check this to enable the RIP (Routing Information Protocol) feature of the LevelOne Wireless Broadband Router.
The LevelOne Wireless Broadband Router supports RIP 1 only.

Static Routing

Static Routing
Table Entries
This list shows all entries in the Routing Table.
  • The "Properties" area shows details of the selected item in the list.
  • Change any the properties as required, then click the "Update" button to save the changes to the selected entry.
Properties
  • Destination Network - The network address of the remote LAN segment. For standard class "C" LANs, the network address is the first 3 fields of the Destination IP Address. The 4th (last) field can be left at 0.
  • Network Mask - The Network Mask for the remote LAN segment. For class "C" networks, the default mask is 255.255.255.0
  • Gateway IP Address - The IP Address of the Gateway or Router which the LevelOne Wireless Broadband Router must use to communicate with the destination above. (NOT the router attached to the remote segment.)
  • Metric - The number of "hops" (routers) to pass through to reach the remote LAN segment. The shortest path will be used. The default value is 1.

Buttons

Save
Save the RIP setting. This has no effect on the Static Routing Table.
Add
Add a new entry to the Static Routing table, 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 Static Routing Table entry, using the data shown in the "Properties" area on screen.
Delete
Delete the current Static Routing Table entry.
Clear Form
Clear all data from the "Properties" area, ready for input of a new entry for the Static Routing table.
Generate Report
Generate a read-only list of all entries in the Static Routing table.

 

Configuring Other Routers on your LAN

It is essential that all IP packets for devices not on the local LAN be passed to the LevelOne Wireless Broadband Router , so that they can be forwarded to the external LAN, WAN, or Internet. To achieve this, the local LAN must be configured to use the LevelOne Wireless Broadband Router as the Default Route or Default Gateway.

Local Router

The local router is the Router installed on the same LAN segment as the LevelOne Wireless Broadband Router. This router requires that the Default Route is the LevelOne Wireless Broadband Router itself. Typically, routers have a special entry for the Default Route. It should be configured as follows.

Destination IP Address
Normally 0.0.0.0, but check your router documentation.
Network Mask
Normally 0.0.0.0, but check your router documentation.
Gateway IP Address
The IP Address of the LevelOne Wireless Broadband Router.
Metric
1

 

Other Routers on the Local LAN

Other routers on the local LAN must use the LevelOne Wireless Broadband Router 's Local Router as the Default Route. The entries will be the same as the LevelOne Wireless Broadband Router 's local router, with the exception of the Gateway IP Address.

Static Routing - Example

Figure 49: Routing Example

For the LevelOne Wireless Broadband Router 's Routing Table

For the LAN shown above, with 2 routers and 3 LAN segments, the LevelOne Wireless Broadband Router requires 2 entries as follows.

Entry 1 (Segment 1)

Destination IP Address
192.168.1.0
Network Mask
255.255.255.0 (Standard Class C)
Gateway IP Address
192.168.0.100 (LevelOne Wireless Broadband Router 's local Router)
Metric
1

Entry 2 (Segment 2)

Destination IP Address
192.168.2.0
Network Mask
255.255.255.0 (Standard Class C)
Gateway IP Address
192.168.0.100
Metric
2

For Router A's Default Route

Destination IP Address
0.0.0.0
Network Mask
0.0.0.0
Gateway IP Address
192.168.0.1 (LevelOne Wireless Broadband Router 's IP Address)

For Router B's Default Route

Destination IP Address
0.0.0.0
Network Mask
0.0.0.0
Gateway IP Address
192.168.1.80 (LevelOne Wireless Broadband Router 's local router)



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