At 07:05 PM 11/13/2006, Jim Small wrote:
>Pete,
>
>I didn't even realize you could do this until I read your question, but
>here is one way (not sure if this is exactly what you want):
>Open a capture
>Narrow down the interesting packets
>(For example, I do a lot of web traffic analysis so I might use a filter
>such as http.content_length > 20000)
>Now, let's say I see a Flash file, a GIF, or a JPEG that I want to save
>- just the actual binary data, not the packet headers.
>I would click on the interesting packet (assuming I have TCP and HTTP
>reassembly enabled)
>Next, in the packet details window (middle pane) I would click on the
>relevant data portion.  So for a JPEG image this would be the part that
>reads JPEG File Interchange Format.
>Finally, I would use the File->Export->Selected Packet Bytes menu item.
>Then I would name the file and I personally change the save as type to
>*.* so I can set the file extension (not completely sure this is
>necessary but I do it out of habit).
>Now, if I open up this file with a graphics viewing I will see that I
>have a valid JPEG.
>
>Pretty cool stuff.

I think that would work for small amounts of data, but I'm dealing 
with video streams over hundreds of packets.


>You can also filter by TCP streams (but I believe you can't save as raw
>from the TCP Streams page).

You  can save as raw. It's great for video streams over TCP.
I was hoping for a similar capability for UDP streams, after I'd 
applied a filter.



Thanks

Pete 


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