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Configuring Your Gateway
Advanced Wireless Settings Menu
Using the Advanced Wireless Settings Filtering menu, you can configure advanced wireless
settings for the Gateway.
To access the Advanced Wireless Settings menu, click
Wireless
in the menu bar and then
click the
Advanced Wireless Settings
submenu. Figure 23 shows an example of the menu
and Table 11 describes the settings you can select.
Note:
The
Advanced Wireless Settings
submenu is not available in the menu bar if wireless
operation is disabled in the Wireless Basic Settings menu (see page 35).
Figure 23. Wireless Advanced Settings Menu
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Configuring Your Gateway
Table 11. Wireless Advanced Settings Options
Option
Description
BG Protection Mode
This mode is a protection mechanism that prevents collisions among 802.11b/g modes. Choices are:
Auto = BG protection mode goes on or off automatically as needed.
Always-On = BG protection mode is always on.
Always-Off = BG protection mode is always off. (
default
)
IGMP Snooping
Enables or disables the Gateway from forwarding multicast traffic intelligently.
•
Enable = Gateway listens to IGMP membership reports, queries, and leave messages to identify the
Gateway ports that are members of multicast groups. Multicast traffic will only be forwarded to ports
identified as members of the specific multicast group or groups..
•
Disable = Gateway does not analyze all IGMP packets. (
default
)
WMM Configuration
Displays a screen for selecting Wi-Fi Multimedia (WMM) settings for your wireless access point(s).
HT Physical Mode
Operating Mode
Lets you select between Mixed Mode and Green Field.
Mixed Mode = provides backward compatibility with IEEE 802.11n/a/g/b devices. (
default
)
Green Field = used for pure network of 802.11n access points and clients, taking full advantage of the
high-throughput capabilities of the 11n MIMO architecture
Channel BandWidth
Select a channel bandwidth of 20 or 20/40.
•
20 = allows only single-channel operation (e.g., 20 MHz).
•
20/40 = allows both single channel operation (20 MHz) and the wider bandwidth operation (40 MHz) by
using two or more adjacent (contiguous channels). A 20/40 BSS is a wireless network that allows a
wider bandwidth operation mode. (
default
)
Guard Interval
The guard interval is the period in nanoseconds that the Gateway listens between packets. Choices are:
•
Long = 800 ns guard interval.
•
Short = 400 ns guard interval (
default
)
MCS
Modulation Coding Scheme (MCS) is a specification of PHY parameters consisting of modulation order
(BPSK, QPSK, 16-QAM, 64-QAM) and FEC code rate (1/2, 2/3, 3/4, 5/6). MCS is used in your Gateway to
define 32 symmetrical settings. MCS provides for potentially greater throughput. High throughput data
rates are a function of MCS, bandwidth, and guard interval. Default is auto.
Reverse Direction Grant
(RDG)
Speeds up data transmission between the Gateway and 802.11n access points and clients by allowing
wireless workstations to send/receive data simultaneously, without contending for shared medium. Default
is enable.
Extension Channel
Defines a second 20-MHz channel. 40-MHz stations can use this channel in addition to using the control
channel simultaneously.
Aggregation
MSDU(A_MSDU)
Enables or disables aggregation of multiple MSDUs in one MPDU. Default is disable.
Auto Block ACK
Enables or disables Auto Block ACL function. Default is disable.
Decline BA Request
Enables or disables the BA request function. Default is disable.
Other
HT TxStream
Select 1 or 2 from the pull-down menu. Default is 2.
HT RxStream
Select 1 or 2 from the pull-down menu. Default is 2.
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Configuring Your Gateway
Port Forwarding Menu
The Port Forwarding menu lets you configure the Gateway to provide port-forwarding
services that let Internet users access predefined services such as HTTP (80), FTP (20/21),
and AIM/ICQ (5190) as well as custom-defined services. You perform port forwarding by
redirecting the WAN IP address and the service port to the local IP address and service port.
You can configure a maximum of 100 predefined and custom-defined services.
To access the Port Forwarding menu, click
NAT
in the menu bar and then click the
Port
Forwarding
submenu in the menu bar. Figure 18 shows an example of the menu.
Figure 24. Port Forwarding Settings Menu
Adding a Port Forwarding Entry for a Predefined Service
Using the following procedure, you can select well-known services and specify the LAN host
IP address(es) that will provide the service to the Internet.
1. In the Port Forwarding menu, click the
Add
button below the
Predefined Service Table
.
The Predefined Service menu appears (see Figure 19).
2. Complete the fields in the Predefined Service menu (see Table 7). (Or click
Back
to return
to the Port Forwarding Settings menu or
Cancel
to cancel any selections you made.)
3. Click
Apply
. The Port Forwarding menu reappears, with the predefined service you
configured shown in the
Predefined Service Table
.
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Configuring Your Gateway
4. To configure additional services (up to 100, including customer-defined services), repeat
steps 1 through 3. When you finish, click
Apply
in the LAN Settings menu to save your
settings.
5. To change the settings for a predefined service, click the radio button to the left of the
service you want to change and click the
Edit
button. When the Predefined Service menu
appears, edit the settings as necessary (see Table 7) and click
Apply
. Click
Apply
in the
LAN Settings menu to save your settings.
6. To delete a predefined service, click the radio button to the left of the service you want to
delete and click the
Delete
button. No precautionary message appears before you delete a
predefined service. Click
Apply
in the LAN Settings menu to save your settings.
Figure 25. Predefined Service Menu
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Configuring Your Gateway
Table 12. Predefined Service Menu Options
Option
Description
Service
List of predefined services from which you can choose.
LAN Server IP
IP address of the LAN PC or server that is running the service.
Remote IPs
Forwards the service to any remote IP address, one remote IP address, or a range of remote IP
addresses.
Start IP
To forward to:
•
A single remote IP address, enter the remote IP address.
•
A range of remote IP addresses, enter the starting IP address here and the ending IP address
range in the next field.
This field is unavailable if the Gateway is configured for any remote IP addresses.
End IP
Enter the ending IP address in the remote IP address range. This field is unavailable if the Gateway
is configured for any remote IP addresses or for a single remote IP address.
Adding a Port Forwarding Entry for a Customer-Defined Service
Using the following procedure, you can define special application services you want to
provide to the Internet. The following example shows how to set port forwarding for a Web
server on an Internet connection, where port 80 is blocked from the WAN side, but port 8000
is available.
Name:
Web Server
Type:
TCP
LAN Server IP:
192.168.0.100
Remote IPs:
Any (allow access to any public IP)
Public Port:
8000
Private Port:
80
With this configuration, all HTTP (Web) TCP traffic on port 8000 from any IP address on the
WAN side is redirected through the firewall to the Internal Server with the IP address
192.168.0.100 on port 80.
To create your own customized port-forwarding rules:
1. In the Port Forwarding menu, click the
Add
button below the
Customer Defined Service
Table
. The Customer Defined Service menu appears (see Figure 26).
2. Complete the fields in the Customer Defined Service menu (see Table 10). (Or click
Back
to return to the Port Forwarding Settings menu or
Cancel
to cancel any selections you
made.)
3. Click
Apply
. The Port Forwarding menu reappears, with the predefined service you
configured shown in the
Customer Defined Service Table
.
4. To configure additional services (up to 100, including predefined services), repeat steps 1
through 3. When you finish, click
Apply
in the LAN Settings menu to save your settings.
45
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