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Chapter 5: Configuring the Wireless-G Travel Router with SpeedBooster
The Wireless Tab - Advanced Wireless Settings
Wireless-G Travel Router with SpeedBooster
DTIM Interval
. This value 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 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
.
Change these settings as described here and click the
Save Settings
button to apply your changes or
Cancel
Changes
to cancel your changes. Help information is shown on the right-hand side of the screen.
beacon interval
: data transmitted on your wireless
network that keeps the network synchronized.
fragmentation
: breaking a packet into smaller units
when transmitting over a network medium that
cannot support the original size of the packet.
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26
Chapter 5: Configuring the Wireless-G Travel Router with SpeedBooster
The Security Tab - Firewall
Wireless-G Travel Router with SpeedBooster
The Security Tab - Firewall
The
Firewall
screen offers Filters and the option to Block WAN Requests. Filters block specific Internet data types
and block anonymous Internet requests. To enable a feature, select
Enabled
from the drop-down menu. To
disable a feature, select
Disabled
from the drop-down menu.
Firewall
•
SPI Firewall Protection. Enable this feature to employ Stateful Packet Inspection (SPI) for more detailed
review of data packets entering your network environment.
•
Filter Anonymous Internet Requests. When enabled, this feature keeps your network from being “pinged,” or
detected, by other Internet users. It also reinforces your network security by hiding your network ports. Both
functions of this feature make it more difficult for outside users to work their way into your network. This
feature is enabled by default. Select
Disabled
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. Select Enable to filter multicasting, or Disable to disable this feature.
•
Filter Internet NAT Redirection. This feature uses port forwarding to block access to local servers from local
networked computers. Check the box to enable filter Internet NAT redirection, or uncheck the box to disable
this feature.
•
Web Filters
Proxy. Use of WAN proxy servers may compromise the Gateway's security. Denying Filter Proxy will disable
access to any WAN proxy servers. To enable proxy filtering, click the checkbox.
Java. Java is a programming language for websites. If you deny Java, you run the risk of not having access to
Internet sites created using this programming language. To enable Java filtering, click the checkbox.
ActiveX. ActiveX is a programming language for websites. If you deny ActiveX, you run the risk of not having
access to Internet sites created using this programming language. To enable ActiveX filtering, click the
checkbox.
Cookies. A cookie is data stored on your computer and used by Internet sites when you interact with them. To
enable cookie filtering, click the checkbox.
Change these settings as described here and click the
Save Settings
button to apply your changes or
Cancel
Changes
to cancel your changes. Help information is shown on the right-hand side of the screen.
Figure 5-25: Security Tab - Firewall
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27
Chapter 5: Configuring the Wireless-G Travel Router with SpeedBooster
The Security Tab - VPN Passthrough
Wireless-G Travel Router with SpeedBooster
The Security Tab - VPN Passthrough
Use the settings on this tab to allow VPN tunnels using IPSec, L2TP, or PPTP protocols to pass through the
Router’s firewall.
VPN Passthrough
IPSec Passthrough
. Internet Protocol Security (IPSec) is a suite of protocols used to implement secure exchange
of packets at the IP layer.
IPSec Pass-Through is enabled by default. To disable IPSec Passthrough, select
Disabled
.
L2TP Passthrough
. Layer 2 Tunneling Protocol is the method used to enable Point-to-Point sessions via the
Internet on the Layer 2 level. L2TP Pass-Through is enabled by default. To disable L2TP Passthrough, select
Disabled
.
PPTP Passthrough
. Point-to-Point Tunneling Protocol (PPTP) allows the Point-to-Point Protocol (PPP) to be
tunneled through an IP network. PPTP Pass-Through is enabled by default. To disable PPTP Passthrough, select
Disabled
.
Change these settings as described here and click the
Save Settings
button to apply your changes or
Cancel
Changes
to cancel your changes. Help information is shown on the right-hand side of the screen.
ipsec
: a VPN protocol used to implement
secure exchange of packets at the IP layer.
pptp
: a VPN protocol that allows the Point to Point
Protocol (PPP) to be tunneled through an IP network.
This protocol is also used as a type of broadband
connection in Europe.
Figure 5-26: Security Tab - VPN Passthrough
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28
Chapter 5: Configuring the Wireless-G Travel Router with SpeedBooster
The Access Restrictions Tab - Internet Access Policy
Wireless-G Travel Router with SpeedBooster
The Access Restrictions Tab - Internet Access Policy
The
Internet Access Policy
screen allows you to block or allow specific kinds of Internet usage and traffic, such as
Internet access, designated applications, websites, and inbound traffic during specific days and times.
Internet Access Policy
Access Policy
. Access can be managed by a policy. Use the settings on this screen to establish an access policy
(after the
Save Settings
button 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 the
Delete This Policy
button. To view all the
policies, click the
Summary
button.
On the
Summary
screen, the policies are listed with the following information: No., Policy Name, Access, Days,
Time, and status (Enabled). You can change the type of access, days, and times of a policy. To activate a policy,
click the
Enabled
checkbox. To delete a policy, click its
Delete
button. Click the
Save Settings
button to save
your changes, or click the
Cancel Changes
button to cancel your changes. To return to the Internet Access Policy
tab, click the
Close
button. To view the list of PCs for a specific policy, click the
PCs List
button.
On the
Internet Access PCs List
screen, 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 the
Save
Settings
button to apply your changes or
Cancel Changes
to cancel your changes. Click the
Close
button to exit
this screen.
To create an Internet Access policy:
1.
Select a number from the
Access Policy
drop-down menu.
2.
Enter a Policy Name in the field provided.
3.
To enable this policy, select
Enable
from the
Status
drop-down menu.
4.
Click the
Edit List
button to select which PCs will be affected by the policy. The
Internet Access PCs List
screen will appear. 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 the
Save Settings
button to apply your changes or
Cancel Changes
to cancel your changes. Then click the
Close
button.
5.
Click the appropriate option,
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.
Figure 5-27: Access Restrictions Tab - Internet Access
Policy
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29
Chapter 5: Configuring the Wireless-G Travel Router with SpeedBooster
The Access Restrictions Tab - Internet Access Policy
Wireless-G Travel Router with SpeedBooster
Figure 5-28: Access Restrictions Tab - Summary
Figure 5-29: Access Restrictions Tab - Internet Access
PCs List
6.
Decide which days and what times you want this policy 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
.
7.
You can filter access to various applications accessed over the Internet, such as FTP or telnet, by selecting up
to three applications from the drop-down menus under
Applications
.
The Blocked List menu offers a choice of ten preset applications. For the preset applications you select, the
appropriate range of ports will automatically be displayed. Click the
>>
button to add to the Blocked Services
list.
If the application you want to block is not listed or you want to edit an application’s settings, then create a
new one by entering an Application Name, Port Range, and Protocol. Then, click
Add
.
8.
You can also block access by URL address by entering it in the
Website Blocking by URL
Address field or by
Keyword by entering it in the
Website Blocking by Keyword
field.
9.
Click the
Save Settings
button to save the policy’s settings. To cancel the policy’s settings, click the
Cancel
Changes
button.
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