You work as a Network Administrator for Infosec Inc. Nowadays, you are facing an unauthorized access in your Wi-Fi network. Therefore, you analyze a log that has been recorded by your favorite…

NetStumbler is an active 802.11 network scanning tool for Windows that sends probe frames using an LLC header with OUI 0x00601d (associated with Lucent/Agere chipsets) and PID 0x0001, and embeds the distinctive payload string 'All your 802.11b are belong to us' - both of which match exactly the filter and payload observed in the Ethereal log.

AiroPeek is a passive wireless packet capture and protocol analysis tool that does not inject active probe frames, so it would not produce the LLC OUI or payload signature seen in the log.

Kismet is a passive wireless network detector and sniffer that operates in monitor mode without transmitting frames, meaning it cannot generate the active probe traffic identified in the capture.

AirSnort is a WEP key recovery tool that passively collects encrypted packets to derive keys and does not transmit active probes or embed any such payload string in frames.