WEP Configuration Options

User Manual for the NETGEAR RangeMax™ Wireless PC Card WPN511

The 64-bit WEP data encryption method, allows for a five-character (40-bit) input. Additionally, 24 factory-set bits are added to the forty-bit input to generate a 64-bit encryption key. (The 24 factory-set bits are not user-configurable). This encryption key will be used to encrypt/decrypt all data transmitted via the wireless interface. Some vendors refer to the 64-bit WEP data encryption as 40-bit WEP data encryption since the user-configurable portion of the encryption key is 40 bits wide.

The 128-bit WEP data encryption method consists of 104 user-configurable bits. Similar to the forty-bit WEP data encryption method, the remaining 24 bits are factory set and not user configurable. Some vendors allow passphrases to be entered instead of the cryptic hexadecimal characters to ease encryption key entry.

128-bit encryption is stronger than 40-bit encryption, but 128-bit encryption may not be available outside of the United States due to U.S. export regulations.

When configured for 40-bit encryption, 802.11 products typically support up to four WEP Keys. Each 40-bit WEP Key is expressed as 5 sets of two hexadecimal digits (0-9 and A-F). For example, “12 34 56 78 90” is a 40-bit WEP Key.

When configured for 128-bit encryption, 802.11b products typically support four WEP Keys but some manufacturers support only one 128-bit key. The 128-bit WEP Key is expressed as 13 sets of two hexadecimal digits (0-9 and A-F). For example, “12 34 56 78 90 AB CD EF 12 34 56 78 90” is a 128-bit WEP Key.

Note: Typically, 802.11 access points can store up to four 128-bit WEP Keys but some 802.11 client adapters can only store one. Therefore, make sure that your 802.11 access and client adapters configurations match.

The WEP settings must match on all 802.11 devices that are within the same wireless network as identified by the SSID. In general, if your mobile clients will roam between access points, then all of the 802.11 access points and all of the 802.11 client adapters on the network must have the same WEP settings.

Note: Whatever keys you enter for an AP, you must also enter the same keys for the client adapter in the same order. In other words, WEP key 1 on the AP must match WEP key 1 on the client adapter, WEP key 2 on the AP must match WEP key 2 on the client adapter, etc.

Note: The AP and the client adapters can have different default WEP Keys as long as the keys are in the same order. In other words, the AP can use WEP key 2 as its default key to transmit while a client adapter can use WEP key 3 as its default key to transmit. The two devices will communicate as long as the AP’s WEP key 2 is the same as the client’s WEP key 2 and the AP’s WEP key 3 is the same as the client’s WEP key 3.

B -6	W ire le ss N e tworkin g B a sics

February 2005

WPN511 specifications

The NETGEAR WPN511 is a popular wireless network card specifically designed for laptops and other portable devices, allowing users to connect to wireless networks with ease. With its IEEE 802.11g wireless standard, the WPN511 provides a high-speed connection of up to 54 Mbps, making it suitable for tasks like streaming, file sharing, and online gaming.

One of the key features of the WPN511 is its compatibility with both 802.11g and the older 802.11b standards. This backward compatibility ensures that users can connect to nearly any wireless network, providing flexibility and convenience. The device also employs advanced wireless security features, including WEP, WPA, and WPA2 encryption, which help protect users from unauthorized access and ensure data privacy.

The WPN511 is designed with a compact form factor, making it easy to install and use in various laptop models. It uses a PC Card interface, which allows for simple plug-and-play functionality. Upon inserting the card, users can quickly access an intuitive setup wizard that guides them through the configuration process.

In terms of performance, the NETGEAR WPN511 is equipped with MIMO (Multiple In, Multiple Out) technology, which enhances signal range and reduces dead spots in wireless connectivity. This feature is particularly beneficial in larger environments where a reliable wireless connection is essential. The card is engineered to minimize interference and maintain a stable connection, which is crucial for users engaged in activities requiring consistent bandwidth.

Moreover, the WPN511 supports Quality of Service (QoS) features, which prioritize network traffic to ensure that critical applications like video conferencing and online gaming receive the bandwidth they need without lag or interruption.

Overall, the NETGEAR WPN511 is a robust wireless network card that combines compatibility, security, and performance. Whether professionals need to stay connected during travel or home users want a seamless internet experience, the WPN511 offers a solid solution to meet modern wireless networking demands. Its user-friendly installation process and reliable performance have established it as a go-to choice for many laptop users seeking efficient wireless connectivity.