Wireshark · Wireshark-users: Re: [Wireshark-users] fragmented IP packets

[Marcin <buscin@xxxxxxxxxx>]

Ok thanks! Another question is:

My case is bit particular. My trace consists of:

1)      UDP packets of interest, identified by the particular payload 
bytes (most of them are fragmented)
2)      All the IP packets that are fragmented (this is done in such way 
to be able to catch all the parts)

So my trace is huge, can I make tshark to reassemble only the packets 
that interest me? I’m worried about the performance in other case.

Also what I will see in the output trace? Only reassembled packets or 
also the fragmented parts?

Marcin

Joerg Mayer pisze:
> On Wed, Sep 19, 2007 at 11:09:41AM +0200, Marcin wrote:
>   
> > Is there a way to merge all the fragmented IP packets and them output 
> > them into separate trace? I Would need smth. like:
> > tshark ???r intrace ???w outrace
> > to have all the packets merged inside the outrace. I then need to access 
> > full payload of the merged packets.
> >     
>
> In a newly installed setting wireshark (and tshark) will automagically
> reassemble fragmented ip packets: The last fragment will dissect like
> the whole packet. This behaviour can be changed via preferences.
>
>  ciao
>     Joerg
>   



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