D-Link DSL-2740B manual Wlan Security, Wep

Channel

802.11Mode

Bandwidth

802.11n Rate Fragmentation Threshold RTS Threshold

DTIM Interval

Beacon Interval

Preamble Type

Transmit Power

Operation channel of your access point. Channel availability is different for different countries due to their regulation.

Select Mixed 802.11ng and 802.11b to operate in b/g/n mode. Or select specified mode to use.

Channel bandwidth. Maximum rate for 20 MHz is 130 Mbps. Maximum rate for 40 MHz is 270 Mbps.

Select Auto to operate in all available transmission rates. Or select specified rate to use.

Maximum frame size. Frame larger than the threshold are fragmented into multiple packets and transmitted. The range is 256~2346 bytes.

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 range is 0~2347 bytes.

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 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 message. The range is 1~255 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 value is 1~65535 milliseconds.

The preamble is used to synchronize the transmitter and receiver and derives common timing releationship. The Short preamble improves throughput but not all wireless clients support short preamble type.

5-level of transmit power are available: 20%, 40%, 60%, 80%, and 100%.

WLAN SECURITY

In the WLAN Security window, select the type of security you want to configure. The window will change to present the settings specific to the method being configured. The Router’s wireless security options include WEP, 802.1x, WPA, WPA-PSK(Pre- Shared Key), WPA2, WPA2-PSK, Mixed WPA/WPA2, Mixed WPA/WPA2-PSK.

WEP

WEP (Wireless Encryption Protocol) encryption can be enabled for security and privacy. WEP encrypts the data portion of each frame transmitted from the wireless adapter using one of the predefined keys. The router offers 64-, or 128-bit encryption with four keys available.

1.Select Network Authentication type from the drop-down list. (Shared is bettern than Open)

2.Select Encryption Strength from the drop-down list. (128-bitis stronger than 64-bit)

3.Specify the encryption key from the Current Network Key drop-down list.

4.Enter the key into the Network Key field 1~4. (Key length is outlined at the bottom of the window.)

39