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Exploring an open public wireless access point with Russ Herrold

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COLUG meeting - October 2002

The notes from the Owl River Company presentation to the October 2002 COLUG meeting by R P Herrold.

We met at a locally owned coffee house, which has an 'open' wireless access point. After less than ten minutes walkthrough, from the pre-meeting posts (1, 2, 3, and 4), all the units present -- NetBSD, FreeBSD, Red Hat Linux 7.3 and 8.0, and yes, even a Windows 982E -- were connected either to the shop's access point, or a backside wireless link; some attendees jacked in across a non-routed, wired private subnet on a 'victim' box running Red Hat Linux 8.0.

The web form down this link (view source) has no real userid or password -- it is structured for easy 'sniffing' with embedded tracer deadbeef markers. An annotated trace of a real 'sniffed' conversation, a pointer to a chart on the OSI stack, and a 'further reading' link.

Attendees were led through some simple tcpdump and ethereal tracing; some sniffed from their local units; others ssh'ed in to the 'victim' box, and popped a tcpdump and ethereal window back through their connection; others connected to a vncserver, either with vncviewer or the web view capability of VNC.

colug-0210-1.html - colug-0210-2.html - colug-0210-3.html - colug-0210-4.html - osi.html - smb-v-iso.png - t04124.pdf - trace.html

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