Re: Split Kismet log file

[Phil Ames <pentest () una-cerveza com>]

You can use tcpdump's -C option to split large packet captures:

-C
Before writing a raw packet to a  savefile, check whether the file  is
currently  larger than file_size and, if so, close the current savefile
and open a new one.  Savefiles after the  first savefile will  have the
name specified with the -w flag, with a number after it, starting at 1
and continuing upward.  The units of  file_size  are  millions  of bytes
 (1,000,000  bytes, not 1,048,576 bytes).

so:

tcpdump -r big.pcap -w little.pcap -C 35

would give you little.pcap, little.pcap1, little.pcap2, and so on.

-Phil

Matheus Michels wrote:
> Hey guys,
>
> Is there any way to split up a Kismet (tcpdump/libpcap format) log file in two 
> or more pieces? I left Kismet sniffing in a high-traffic network and ended up 
> with a huge 300 MB log file (about 600.000 packets), which freezes Wireshark 
> if I try to dissect it. I cannot use a faster machine now, so I need to split 
> this file in, at most, several 30-40 MB files.
>
> Thanks in advance.
>
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