Cace Technologies AirPcap Wireless Capture Adapters Appendix a 802.11 Frequencies, 4GHz Band

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Appendix A: 802.11 Frequencies

2.4GHz Band

2312MHz to 2372 MHz in 5MHz steps.

The 802.11b/g center frequencies and corresponding channel numbers are:

(2412MHz, Channel 1) to (2472MHz, Channel 13), where the frequencies are incremented by 5MHz and the channel numbers by 1. There is an additional frequency for channel 14, namely, 2484MHz which is 12MHz beyond channel 13.

All of the 2.4GHz channels are supported by all of the adapters in the

AirPcap Product Family.

5GHz Band

The 5 GHz range which is divided into a large number of channels. The center frequency of channel 0 is 5,000 MHz, the center frequency of channel 1 is 5,005 MHz. The formula for relating channels (n) to center frequencies in the 5 GHz range is:

Center frequency (MHz) = 5000 + 5*n, where n = 0, …, 199,

Center frequency (MHz) = 5000 – 5*(256 – n), where n = 240, …, 255.

Note that channels 240 to 255 range from 4920MHz to 4995MHz.

Channels Supported by the AirPcap Product Family

All of the 2.4GHz channels are supported by all of the adapters in the

AirPcap Product Family.

AirPcap Ex

AirPcap Ex supports an extended range of center frequencies. The bandwidth associated with each center frequency is 20MHz. The center frequencies are:

•2312MHz to 2372MHz in 5 MHz increments

•2412MHz to 2472MHz in 5 MHz increments. These correspond to BG channels 1 to 13

•2484MHz corresponds to BG channel 14

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AirPcap User’s Guide

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Contents Family of Wireless Capture Adapters User’s Guide Copyrights Contents and Figures Figures AirPcap Product Family AirPcap AirPcap Tx AirPcap Ex AirPcap NBrief Introduction to TerminologyStandards Channels Types of Frames How AirPcap Adapters Operate Http//standards.ieee.org/getieee802/802.11.htmlMultiple Channel Capture applies to USB adapters only Configuring the Adapters the AirPcap Control Panel Identifying the AirPcap AdaptersSettings AirPcap N and Extension ChannelSettingWEP Keys List improves performance Multi-Channel Aggregator AirPcap and Wireshark Identifying the AirPcap Adapters in WiresharkWireless Toolbar Wireless toolbar has the following controls Wireless Settings Dialog Parameters that can be configured are Decryption Keys Management Dialog in Wireshark Decryption Keys Management DialogAirPcap User’s Guide Transmit Raw 802.11 Frames on Your Network Where to Learn More Appendix a 802.11 Frequencies 4GHz Band5GHz Band Channels Supported by the AirPcap Product FamilyAirPcap N

AirPcap Wireless Capture Adapters specifications

Cace Technologies AirPcap Wireless Capture Adapters are essential tools for network professionals aiming to monitor, analyze, and troubleshoot wireless networks. These innovative devices enable packet capture and analysis over 802.11 wireless networks, providing insights that are crucial for maintaining network integrity and performance.

One of the main features of AirPcap adapters is their ability to capture raw 802.11 packets in real time, including management, control, and data frames. This capability allows for a comprehensive view of wireless communications, assisting engineers in identifying issues like signal interference, unauthorized access points, and potential security breaches.

Another significant characteristic is the support for both 802.11a/b/g/n standards. This wide-ranging compatibility ensures that users can effectively analyze traffic across various network types, regardless of the generation of equipment being utilized. Additionally, AirPcap adapters are equipped with advanced features like packet injection, which is beneficial for testing network robustness and security defenses.

The wireless capture adapters are often praised for their seamless integration with popular analysis tools such as Wireshark. This combination provides users with a powerful interface for performing in-depth packet analysis, enabling the decoding of complex protocols and offering visualizations that aid in understanding network behaviors.

For ease of use, AirPcap adapters come equipped with a compact design and user-friendly software. They can be connected to laptops or portable devices, making them ideal for field use. Their portability ensures that field technicians or network analysts can perform assessments in various environments without the need for extensive setup or configurations.

Security is another critical aspect where AirPcap shines. These adapters allow for the capture of encrypted packets, provided the user has the appropriate decryption keys. This feature is particularly valuable for troubleshooting security protocols and ensuring that data transmitted over the network is secure.

In conclusion, Cace Technologies AirPcap Wireless Capture Adapters are versatile and powerful tools for any network engineer or security professional. With their ability to capture and analyze a wide range of wireless traffic, their compatibility with industry-standard tools, and their advanced features, AirPcap adapters are indispensable in today's increasingly wireless world. Whether used for routine monitoring, troubleshooting, or security assessments, these adapters offer a robust solution for wireless network management.
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