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Chapter 3
Advanced Configuration
16
Wireless-N Home Router
Wireless-G devices are experiencing severe problems and
are not able to transmit to the Router in an environment
with heavy 802.11b traffic. This option boosts the Router’s
ability to catch all Wireless-N and Wireless-G transmissions
but severely decreases performance. To use this option,
keep the default, Auto. To disable this option, select
Disabled.
Beacon Interval 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. The default is 100 milliseconds.
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
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.
Click Save Settings to apply your changes, or click Cancel
Changes to clear your changes.
Security > Firewall
The Firewall screen is used to configure a firewall that can
filter out various types of unwanted traffic on the Routers
local network.
Security > Firewall
Firewall
SPI Firewall Protection To use firewall protection,
keep the default selection, Enabled. To turn off firewall
protection, select Disabled.
Internet Filter
For the following options, select the option to enable it, or
deselect the option to disable it.
Filter Anonymous Internet Requests This feature makes
it more difficult for outside users to work their way into
your network. This feature is enabled by default. Deselect
this option 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 this option to filter multicasting. This
option is disabled by default.
Filter Internet NAT Redirection This feature uses port
forwarding to block access to local servers from local
networked computers. Select this option to filter Internet
NAT redirection. This option is disabled by default.
Filter IDENT (Port 113) This feature keeps port 113 from
being scanned by devices outside of your local network.
This feature is enabled by default. Deselect this option to
disable it.
Web Filter
For the following options, select the option to enable it, or
deselect the option to disable it.
Proxy Use of WAN proxy servers may compromise the
Gateway’s security. Denying Proxy will disable access to
any WAN proxy servers. Select this option to enable proxy
filtering. This option is disabled by default.
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. Select
20


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