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Message-ID: <Pine.LNX.4.53.0312200949460.7492@andrew.triumf.ca>
Date: Sat, 20 Dec 2003 09:59:53 -0800 (PST)
From: Andrew Daviel <advax@...umf.ca>
To: BUGTRAQ@...URITYFOCUS.COM
Subject: Multicast from Orinoco wireless stations



It seems that some Orinoco 802.11 base stations
send multicast packets on 224.0.1.76/2313 (IAPP.MCAST.NET).

By sending a multicast join (opening a socket with netcat or other tool)
to this group, one can discover other base stations on  multicast-enabled
portions of the Internet, such as the academic networks CA*net, ESnet etc.

There is administrative access to these units via telnet and http.

The group should probably be filtered at an administrative boundary as a
matter of principle.


-- 
Andrew Daviel, TRIUMF, Canada
Tel. +1 (604) 222-7376
security@...umf.ca


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