RADIUS

Remote Authentication Dial-In User Service (RADIUS) is an authentication

 

and accounting system that verifies users credentials and grants access to

 

requested resources.

RF

Radio Frequency. The international unit for measuring frequency is Hertz

 

(Hz), which is equivalent to the older unit of cycles per second. One Mega-

 

Hertz (MHz) is one million Hertz. One Giga-Hertz (GHz) is one billion Hertz.

 

For reference: the standard US electrical power frequency is 60 Hz, the AM

 

broadcast radio frequency band is 0.55 -1.6 MHz, the FM broadcast radio

 

frequency band is 88-108 MHz, and microwave ovens typically operate at

 

2.45 GHz.

Roaming

Movement of a wireless node between two micro cells. Roaming usually

 

occurs in infrastructure networks built around multiple access points.

RTS threshold

The number of frames in the data packet at or above which an RTS/CTS

 

(request to send/clear to send) handshake is turned on before the packet

 

is sent. The default value is 2347.

Shared Key

An encryption key known only to the receiver and sender of data.

SIM

Subscriber Identity Module card is used to validate credentials with the

 

network. A SIM card is a special smart card that is used by GSM-based

 

digital cellular networks.

Silent Mode

Silent Mode Access Points or Wireless Routers have been configured to not

 

broadcast the SSID for the wireless network. This makes it necessary to

 

know the SSID in order to configure the wireless profile to connect to the

 

access point or wireless router.

Single Sign On Single Sign On feature set allows the 802.1x credentials to match your Windows log on user name and password credentials for wireless network connections.

SSID

Service Set Identifier. A value that controls access to a wireless network.

 

The SSID for your wireless network card must match the SSID for any

 

access point that you want to connect with. If the value does not match,

 

you are not granted access to the network. Each SSID may be up to 32

 

characters long and is case-sensitive.

TKIP

Temporal Key Integrity protocol improves data encryption. Wi-Fi Protected

 

Access utilizes its TKIP. TKIP provides important data encryption

 

enhancements including a re-keying method. TKIP is part of the IEEE

 

802.11i encryption standard for wireless LANs. TKIP is the next generation

 

of WEP, the Wired Equivalency Protocol, which is used to secure 802.11

 

wireless LANs. TKIP provides per-packet key mixing, a message integrity

 

check and a re-keying mechanism, thus fixing the flaws of WEP.

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Intel 3945ABG specifications Radius
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3945ABG specifications

The Intel 3945ABG is a wireless networking adapter that played a significant role in advancing wireless connectivity in laptops and portable devices. Introduced in the mid-2000s, this adapter is notable for its dual-band capabilities and compliance with the IEEE 802.11 a/b/g standards. It supports both 2.4 GHz and 5 GHz frequency bands, enabling users to connect to a variety of wireless networks while offering improved performance and flexibility.

One of the standout features of the Intel 3945ABG is its support for MIMO technology, which stands for Multiple Input Multiple Output. This innovative technology enhances data transmission rates and increases the range of wireless connections by utilizing multiple antennas for sending and receiving data. MIMO allows the adapter to operate more efficiently in environments with obstacles, such as walls or furniture, making it an ideal choice for users who need reliable connectivity in varied settings.

The Intel 3945ABG adapter also includes Wi-Fi Protected Access (WPA) and WPA2 security protocols, ensuring that data transmitted over the wireless network remains secure. This is especially important in a time when wireless networks became progressively more vulnerable to unauthorized access and data breaches. The adapter's compatibility with these security standards aids users in establishing secure communications, whether for casual web browsing or sensitive tasks.

In terms of performance, the Intel 3945ABG offers maximum theoretical speeds of up to 54 Mbps in the 802.11a and 802.11g modes, while maintaining lower speeds in the 802.11b mode (up to 11 Mbps). In practical use, this means that users can achieve high data transfer rates in optimal conditions, making it suitable for video streaming, online gaming, and large file downloads.

The Intel 3945ABG also integrates seamlessly with Intel's Centrino mobile technology, which enhances power efficiency and optimizes the overall performance of a laptop. This synergy not only extends battery life but also provides a smooth user experience, as it allows the adapter to effectively manage network resources and maintain a stable connection.

In summary, the Intel 3945ABG wireless adapter is characterized by its dual-band support, MIMO technology, robust security features, and integration with Intel's Centrino technology. While it may now be considered outdated by modern standards, it served as an important stepping stone in the evolution of wireless networking technology and continues to be remembered for its contributions to mobile connectivity.
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