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Chapter 3
Advanced Configuration
12
Wireless-G Broadband Router
Security Mode > WPA Enterprise
WPA Algorithm
WPA supports two encryption methods,
TKIP and AES, with dynamic encryption keys. Select
the type of algorithm,
TKIP
or
AES
. (AES is a stronger
encryption method than TKIP.)
RADIUS Server Address
Enter the IP Address of the
RADIUS server.
RADIUS Port
Enter the port number of the RADIUS
server. The default value is
1812
.
Shared Key
Enter the key shared between the Router
and the server.
Key Renewal Timeout
Enter a Key Renewal Timeout
period, which instructs the Router how often it should
change the encryption keys. The default Key Renewal
Timeout period is
3600
seconds.
WPA2 Personal
Security Mode > WPA2 Personal
WPA
Algorithm
WPA2
supports
two
encryption
methods, TKIP and AES, with dynamic encryption keys.
Select the type of algorithm,
AES
, or
TKIP + AES
. The
default selection is
AES
.
WPA Shared Key
Enter a WPA Shared Key of 8-63
characters.
Group Key Renewal
Enter a Group Key Renewal period,
which instructs the Router how often it should change the
encryption keys. The default Group Key Renewal period is
3600
seconds.
WPA2 Enterprise
This option features WPA2 used in coordination with a
RADIUS server. (This should only be used when a RADIUS
server is connected to the Router.
Security Mode > WPA2 Enterprise
WPA
Algorithm
WPA2
supports
two
encryption
methods, TKIP and AES, with dynamic encryption keys.
Select the type of algorithm,
AES
, or
TKIP + AES
. The
default selection is
AES
RADIUS Server Address
Enter the IP Address of the
RADIUS server.
RADIUS Port
Enter the port number of the RADIUS
server. The default value is
1812
.
Shared Key
Enter the key shared between the Router
and the server.
Key Renewal Timeout
Enter a Key Renewal Timeout
period, which instructs the Router how often it should
change the encryption keys. The default Key Renewal
Timeout period is
3600
seconds.
RADIUS
This option features WEP used in coordination with a
RADIUS server. (This should only be used when a RADIUS
server is connected to the Router.)
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Chapter 3
Advanced Configuration
13
Wireless-G Broadband Router
Security Mode > RADIUS
IMPORTANT:
If you are using WEP encryption,
always remember that each device in your
wireless network MUST use the same WEP
encryption method and encryption key, or else
your wireless network will not function properly.
RADIUS Server Address
Enter the IP Address of the
RADIUS server.
RADIUS Port
Enter the port number of the RADIUS
server. The default value is
1812
.
Shared Key
Enter the key shared between the Router
and the server.
Default Transmit Key
Select a Default Transmit Key
(choose which Key to use). The default is
1
.
WEP Encryption
Select a level of WEP encryption,
64 bits 10 hex digits
or
128 bits 26 hex digits
. The
default is
64 bits 10 hex digits
.
Passphrase
Enter a Passphrase to automatically generate
WEP keys. Then click
Generate
.
Key 1-4
If you did not enter a Passphrase, enter the WEP
key(s) manually.
WEP
WEP is a basic encryption method, which is not as secure
as WPA.
Security Mode > WEP
Default Transmit Key
Select a Default Transmit Key
(choose which Key to use). The default is
1
.
WEP Encryption
Select a level of WEP encryption,
64 bits
10 hex digits
or
128 bits 26 hex digits
. The default is
64 bits 10 hex digits
.
Passphrase
Enter a Passphrase to automatically generate
WEP keys. Then click
Generate
.
Key 1-4
If you did not enter a Passphrase, enter the WEP
key(s) manually.
Click
Save Settings
to apply your changes, or click
Cancel
Changes
to cancel your changes.
Wireless > Wireless MAC Filter
Wireless access can be filtered by using the MAC addresses
of the wireless devices transmitting within your network’s
radius.
Wireless > Wireless MAC Filter
Wireless MAC Filter
Wireless MAC Filter
To filter wireless users by MAC Address,
either permitting or blocking access, click
Enable
. If you do
not wish to filter users by MAC Address, keep the default
setting,
Disable
.
Prevent
Select this
to block wireless access by MAC
Address. This button is selected by default.
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Chapter 3
Advanced Configuration
14
Wireless-G Broadband Router
Permit Only
Select this to allow wireless access by MAC
Address. This button is not selected by default.
Edit MAC Filter List
Click this to open the
MAC Address
Filter List
screen. On this screen, you can list users, by MAC
Address, to whom you wish to provide or block access. For
easy reference, click
Wireless Client MAC List
to display a list
of network users by MAC Address
.
MAC Address Filter List
Click
Save Settings
to apply your changes, or click
Cancel
Changes
to cancel your changes.
Wireless > Advanced Wireless Settings
This
Wireless > Advanced Wireless Settings
screen is used
to set up the Router’s advanced wireless functions. These
settings should only be adjusted by an expert administrator
as incorrect settings can reduce wireless performance.
Wireless > Advanced Wireless Settings
Advanced Wireless
Authentication Type
The default is set to
Auto
, which
allows either Open System or Shared Key authentication
to be used. With
Open System
authentication, the sender
and the recipient do NOT use a WEP key for authentication.
With
Shared Key
authentication, the sender and recipient
use a WEP key for authentication.
Basic Rate
The Basic Rate setting is not actually one rate
of transmission but a series of rates at which the Router
can transmit. The Router will advertise its Basic Rate to the
other wireless devices in your network, so they know which
rates will be used. The Router will also advertise that it will
automatically select the best rate for transmission. The
default setting is
Default
, when the Router can transmit
at all standard wireless rates (1-2Mbps, 5.5Mbps, 11Mbps,
18Mbps, and 24Mbps). Other options are
1-2Mbps
, for
use with older wireless technology, and
All
, when the
Router can transmit at all wireless rates. The Basic Rate
is not the actual rate of data transmission. If you want to
specify the Router’s rate of data transmission, configure
the Transmission Rate setting.
Transmission Rate
The rate of data transmission should
be set depending on the speed of your wireless network.
You can select from a range of transmission speeds, or you
can select
Auto
to have the Router automatically use the
fastest possible data rate and enable the Auto-Fallback
feature. Auto-Fallback will negotiate the best possible
connection speed between the Router and a wireless
client. The default value is
Auto
.
CTS Protection Mode
CTS (Clear-To-Send) Protection
Mode should remain disabled unless you are having severe
problems with your Wireless-G products not being able
to transmit to the Router in an environment with heavy
802.11b traffic. This function boosts the Router’s ability
to catch all Wireless-G transmissions but will severely
decrease performance.
Frame Burst
Enabling this option should provide your
network with greater performance, depending on the
manufacturer of your wireless products. To turn on the
Frame Burst option, select
Enable
. The default is
Disable
.
Beacon Interval
The default value is
100
. Enter a value
between 1 and 65,535 milliseconds. The Beacon Interval
value indicates the frequency interval of the beacon. A
beacon is a packet broadcast by the Router to synchronize
the wireless network.
DTIM Interval
This value, between 1 and 255, indicates
the interval of the Delivery Traffic Indication Message
(DTIM). A DTIM field is a countdown field informing
clients of the next window for listening to broadcast
and multicast messages. When the Router has buffered
broadcast or multicast messages for associated clients, it
sends the next DTIM with a DTIM Interval value. Its clients
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Chapter 3
Advanced Configuration
15
Wireless-G Broadband Router
hear the beacons and awaken to receive the broadcast
and multicast messages. The default value is
1
.
Fragmentation
Threshold
This
value
specifies
the
maximum size for a packet before data is fragmented
into multiple packets. If you experience a high packet
error rate, you may slightly increase the Fragmentation
Threshold. Setting the Fragmentation Threshold too low
may result in poor network performance. Only minor
reduction of the default value is recommended. In most
cases, it should remain at its default value of
2346
.
RTS Threshold
Should you encounter inconsistent data
flow, only minor reduction of the default value,
2347
, is
recommended. If a network packet is smaller than the
preset RTS threshold size, the RTS/CTS mechanism will
not be enabled. The Router sends Request to Send (RTS)
frames to a particular receiving station and negotiates
the sending of a data frame. After receiving an RTS, the
wireless station responds with a Clear to Send (CTS) frame
to acknowledge the right to begin transmission. The RTS
Threshold value should remain at its default value of
2347
.
AP Isolation
This isolates all wireless clients and wireless
devices on your network from each other. Wireless devices
will be able to communicate with the Router but not with
each other. To use this function, select
On
. AP Isolation is
turned
Off
by default.
Click
Save Settings
to apply your changes, or click
Cancel
Changes
to cancel your changes.
Security > Firewall
The
Security > Firewall
screen is used to configure a firewall
that can filter out various types of unwanted traffic on the
Router’s local network.
Security > Firewall
Firewall
Firewall Protection
To use firewall protection, keep the
default selection,
Enable
. To turn off firewall protection,
select
Disable
.
Block WAN Requests
Block
Anonymous
Internet
Requests
This
feature
makes it more difficult for outside users to work their
way into your network. This feature is selected
by default.
Deselect the feature to allow anonymous Internet
requests
.
Filter
Multicast
Multicasting
allows
for
multiple
transmissions to specific recipients at the same time. If
multicasting is permitted, then the Router will allow IP
multicast packets to be forwarded to the appropriate
computers. This feature is selected by default. Deselect
this feature to disable it.
Filter
Internet
NAT
Redirection
This
feature
uses
port forwarding to block access to local servers from
local networked computers. Select
Filter Internet NAT
Redirection
to filter Internet NAT redirection. This feature
is not selected by default.
Filter IDENT (Port 113)
This feature keeps port 113 from
being scanned by devices outside of your local network.
This feature is selected by default. Deselect this feature to
disable it.
Click
Save Settings
to apply your changes, or click
Cancel
Changes
to cancel your changes.
Security > VPN Passthrough
The
Security > VPN Passthrough
screen allows you to enable
VPN tunnels using IPSec, PPTP, or L2TP protocols to pass
through the Router’s firewall.
Security > VPN Passthrough
VPN Passthrough
IPSec Passthrough
Internet Protocol Security (IPSec) is
a suite of protocols used to implement secure exchange
of packets at the IP layer. To allow IPSec tunnels to pass
through the Router, keep the default,
Enable
.
PPTP Passthrough
Point-to-Point Tunneling Protocol
(PPTP) allows the Point-to-Point Protocol (PPP) to be
tunneled through an IP network. To allow PPTP tunnels to
pass through the Router, keep the default,
Enable
.
L2TP Passthrough
Layer 2 Tunneling Protocol is the
method used to enable Point-to-Point sessions via the
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Chapter 3
Advanced Configuration
16
Wireless-G Broadband Router
Internet on the Layer 2 level. To allow L2TP tunnels to pass
through the Router, keep the default,
Enable
.
Click
Save Settings
to apply your changes, or click
Cancel
Changes
to cancel your changes.
Access Restrictions > Internet Access
The
Access Restrictions > Internet Access
screen allows you
to block or allow specific kinds of Internet usage and
traffic, such as Internet access, designated services, and
websites during specific days and times.
Access Restrictions > Internet Access
Internet Access
Internet Access Policy
Access can be managed by a
policy. Use the settings on this screen to establish an
access policy (after
Save Settings
is clicked). Selecting a
policy from the drop-down menu will display that policy’s
settings. To delete a policy, select that policy’s number
and click
Delete
. To view all the policies, click
Summary
.
(Policies can be deleted from the
Summary
screen by
selecting the policy or policies and clicking
Delete
. To
return to the Internet Access tab, click
Close
.)
Internet Policy Summary
Status
Policies are disabled by default. To enable a policy,
select the policy number from the drop-down menu, and
select
Enable
.
To create an Internet Access policy:
Select a number from the
1.
Internet Access Policy
drop-
down menu.
To enable this policy, select
2.
Enable
.
Enter a Policy Name in the field provided.
3.
Click
4.
Edit List of PCs
to select which PCs will be affected
by the policy. The
List of PCs
screen appears. You can
select a PC by MAC Address or IP Address. You can also
enter a range of IP Addresses if you want this policy
to affect a group of PCs. After making your changes,
click
Save Settings
to apply your changes or
Cancel
Changes
to cancel your changes. Then click
Close
.
List of PCs
Select
the
appropriate
option,
5.
Deny
or
Allow
,
depending on whether you want to block or allow
Internet access for the PCs you listed on the
List of PCs
screen.
Decide which days and what times you want this policy
6.
to be enforced. Select the individual days during which
the policy will be in effect, or select
Everyday
. Then
enter a range of hours and minutes during which the
policy will be in effect, or select
24 Hours
.
Select any Blocked Services or Website Blocking you
7.
wish to use.
Click
8.
Save Settings
to save the policy’s settings, or
click
Cancel Changes
to cancel the policy’s settings.
Blocked Services
You can filter access to various services accessed over the
Internet, such as FTP or telnet, by selecting services from
the drop-down menus next to
Blocked Services
. (You can
block up to 20 services.) Then enter the range of ports you
want to filter.
If the service you want to block is not listed or you want to
edit a service’s settings, then click
Add/Edit Service
. Then
the
Port Services
screen will appear.

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