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 sniffer

AirSnort is a passive WEP key recovery tool that only listens to existing traffic and does not transmit probe frames, so it would never produce the active frame signature or payload string found in the log.

Kismet operates entirely in passive monitor mode, capturing existing wireless frames without injecting any probe requests, and therefore cannot generate the LLC OUI/PID pattern or the NetStumbler payload string.

AiroPeek is a commercial wireless packet capture and analysis tool used for monitoring 802.11 traffic - it does not inject probe frames into the network and would not produce the NetStumbler-specific signatures visible in the log.

NetStumbler is a Windows-based 802.11 network scanner that transmits active probe requests carrying a distinctive LLC OUI of 0x00601d and PID of 0x0001, exactly matching the Ethereal display filter shown. The embedded payload string 'All your 802.11b are belong to us' is a well-documented fingerprint specific to NetStumbler frames, making it unambiguously identifiable in any wireless packet capture log.