Cace Technologies AirPcap Wireless Capture Adapters manual WEP Keys

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specification). PPI and radio information includes additional information not contained in the 802.11 frame: transmit rate, signal power, signal quality, channel, and (for PPI) multiple antenna information.

•Include 802.11 FCS in Frames: if checked the captured frames will include the 802.11 4-bytes Frame Check Sequence. This option can be disabled if an application has difficulty decoding the packets that have the Frame Check Sequence.

•FCS Filter: this drop-down list allows you to configure the kind of Frame Check Sequence filtering that the selected adapter will perform:

oAll Frames: the adapter will capture all the frames regardless of whether the FCS is valid or not.

oValid Frames: the adapter will only capture frames that have a valid FCS.

oInvalid Frames: the adapter will only capture frames that have an invalid FCS.

Note:

AirPcap stores the configuration information on a per-adapter

 

basis. This means that changing the configuration of an adapter

 

does not affect the settings of any of the other adapters.

 

 

WEP Keys

The AirPcap driver is able to use a set of WEP keys to decrypt traffic that is WEP encrypted. If a frame is WEP encrypted, the driver will attempt to decrypt the frame using the user-supplied set of WEP keys – the driver will try all of the WEP keys for each frame until it finds one that decrypts the frame. If the decryption is successful, the unencrypted frame is passed to the user application, otherwise the original frame is passed along. By configuring the AirPcap driver with multiple WEP keys, it is possible to decrypt traffic coming from multiple access points that are using different WEP keys, but transmitting on the same channel.

The list of keys can be edited by selecting the Keys tab in the AirPcap control panel (Figure 3).

To add or remove a key, use the “Add New Key” or “Remove Key” buttons, respectively. “Edit Key” allows you to change the value of an existing key. “Move Key Up” and “Move Key Down” can be used to change the order of the keys. This may be an important performance

AirPcap User’s Guide

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Contents Family of Wireless Capture Adapters User’s Guide Copyrights Contents and Figures Figures AirPcap AirPcap Tx AirPcap Ex AirPcap N AirPcap Product FamilyTerminology Brief Introduction toStandards Channels Types of Frames Http//standards.ieee.org/getieee802/802.11.html How AirPcap Adapters OperateMultiple Channel Capture applies to USB adapters only Identifying the AirPcap Adapters Configuring the Adapters the AirPcap Control PanelAirPcap N and Extension ChannelSetting SettingsWEP Keys List improves performance Multi-Channel Aggregator Identifying the AirPcap Adapters in Wireshark AirPcap and WiresharkWireless Toolbar Wireless toolbar has the following controls Wireless Settings Dialog Parameters that can be configured are Decryption Keys Management Dialog Decryption Keys Management Dialog in WiresharkAirPcap User’s Guide Transmit Raw 802.11 Frames on Your Network Where to Learn More 4GHz Band Appendix a 802.11 Frequencies5GHz 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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