Security - CNET CWR-854 User Manual

Threshold value to split the packet. The value can be set from 256 to 2346. The
default value is 2346.
- RTS Threshold: RTS Threshold is a mechanism implemented to prevent the
"Hidden Node" problem. "Hidden Node" is a situation in which two stations are
within range of the same wireless access point/router, but are not within range of
each other. Therefore, they are hidden nodes for each other. When a station starts
data transmission with the Wireless-G Router, it might not notice that the other
station is already using the wireless medium. When these two stations send data at
the same time, they might collide when arriving simultaneously at the Wireless-G
Router. The collision will most certainly result in a loss of messages of both stations.
If the "Hidden Node" problem is an issue, please specify the packet size. The RTS
mechanism will be activated if the data size exceeds the value you set. The default
value is 2347.
Beacon Interval: Beacon interval is the amount of time between beacon
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transmissions. Before a station enters power save mode, the station needs the
beacon interval to know when to wake up to receive the beacon (and learn whether
there are buffered frames at the wireless router).
Data Rate: By default, it selects the highest rate for transmission.
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Preamble Type: A preamble is a signal used in wireless environment to
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synchronize the transmitting timing including Synchronization and Start frame
delimiter. In a "noisy" network environment, the Preamble Type should be set to
Long Preamble. The Short Preamble is intended for applications where minimum
overhead and maximum performance is desired.
Broadcast SSID: Select enabled to allow all the wireless stations to detect the
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SSID of this wireless router.
IAPP: The Inter-Access Point Protocol (IAPP) can extend multi-vendor
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interoperability to the roaming function.
- 802.11g Protection: there are CCK and OFDM modulation scheme using for
802.11b and 802.11g respectively, the packet collision will increase when these two
kind devices exist at the same time. We need to enable the Protection mode to
increase the performance.
Apply Changes: Click on "Apply Changes" to save the setting.
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- Reset: Click on "Reset" button to undo your changes.
- Help: To request help information.

3.4.3 Security

Here you can define the security type and level of your wireless network. Selecting different
method will enable you to have different level of security. Please note that using any encryption
may be a significant degradation of the data throughput on the wireless link. There are five
Encryption types: "None", "WEP", "WPA(TKIP)", "WPA2(AES)", and "WPA2 Mixed".
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