Penetration Testing mailing list archives

RE: Converting raw 802.11 (rfmon) capture file to standard libpcap


From: "Chris Eagle" <cseagle () redshift com>
Date: Mon, 12 Jan 2004 22:09:42 -0800

Jerry Shenk wrote:

By raw, I mean 802.11 rfmon - raw really isn't the right word.  It's
packets that are captured with a wireless care in monitor (or rfmon)
mode.  They have the 802.11 header included so tcpdump can't read them.
Neither can other utilities that I typically use to analyze sniffer
files.  I don't really need to analyze the packets themselves,
ethereal/tehtereal works quite well for that.  What I do want to do is
load them into utilities that don't know what to do with the 802.11
header.

I routinely use Ethereal to read/display packets in rfmon mode.  It decodes
packets just fine with or without prism headers.  I don't think tcpreplay
will handle 802.11 packets however.  It sounds like you are looking for a
tool that will instead rewrite each 802.11 packet as an Ethernet packet by
building an Ethernet header from the 802.11 address fields and pasting that
together with the encapsulated 802.2 data.  Is that what you have in mind?
Do you want to replay the packets over a wired network or over wireless?

Chris


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