Wireless Security - Option Audio GlobeSurfer 3G Reference Manual

802.11b/g wireless router and internet gateway

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encounter severe communication difﬁculties between the GlobeSurfer 3G

and Wireless-G products.

Beacon interval A beacon is a packet broadcast by GlobeSurfer 3G to syn-

chronize the wireless network. The beacon interval value indicates how

often the beacon is sent.

DTIM interval The Delivery Trafﬁc Indication Message (DTIM) is a count-

down value that informs wireless clients of the next opportunity to re-

ceive multicast and broadcast messages. This value ranges between 1

and 16384.

Fragmentation threshold Packets that are larger than this threshold are frag-

mented into multiple packets. Try to increase the fragmentation thresh-

old if you encounter high packet error rates. Do not set the threshold too

low, since this can result in reduced networking performance.

RTS threshold GlobeSurfer 3G sends Request to Send (RTS) packets to the

wireless client in order to negotiate the dispatching of data. The wire-

less client responds with a Clear to Send (CTS) packet, signaling that

transmission can commence. In case packets are smaller than the pre-

set threshold, the RTC/CTS mechanism is not active. If you encounter

inconsistent data ﬂow, try a minor reduction of the RTS threshold size.

Figure 4.49: LAN Wireless Access Point Advanced Parameters

4.3.3.5 Wireless Security

To conﬁgure your wireless security, select the Enabled check-box on the Conﬁg-

ure LAN Wireless screen (see ﬁgure 4.35). The screen will refresh, displaying the

wireless security options (see ﬁgure 4.50). Click Apply to save this change.

Stations security type Select Accept WPA stations to allow wireless clients that

use WPA to communicate with the gateway. Select Accept 802.1X WEP

stations to allow wireless clients that use standard WEP to communicate

with the gateway. Select Accept Non-802.1X WEP stations to allow wireless

clients that use non-standard WEP to communicate with the gateway.

Authentication method Select the authentication method you would like to

use from the Authentication method combo box. Choose between Pre-

Shared key and 802.1x.

Pre-Shared key This entry appears only if you had selected this authentica-

tion method. Enter your encryption key in the Pre-Shared key ﬁeld. You

can use either an ASCII or a Hex value by selecting the value type in the

combo box provided.

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