[Bro] http incomplete file extraction (Files::ANALYZER_EXTRACT) / solved

Frank Meier franky.meier.1 at gmx.de
Thu Apr 2 00:23:36 PDT 2015

Thanks to all who answered!

The -C switch did the trick. Sometimes warnings should be taken 

Have a nice day!


On Mi, Apr 1, 2015 at 5:26 , Siwek, Jon <jsiwek at illinois.edu> wrote:
>>  ~/bro-liste$ /usr/local/bro/bin/bro -r download.pcap extract.bro 
>>  1427874309.892545 warning in 
>> /usr/local/bro/share/bro/base/misc/find-checksum-offloading.bro, 
>> line 54: Your trace file likely has invalid TCP checksums, most 
>> likely from NIC checksum offloading.
> You’ll have to address this problem to get the results you expect.  
> See:
> https://www.bro.org/documentation/faq.html#why-isn-t-bro-producing-the-logs-i-expect-a-note-about-checksums
>>  The weird.log states some “above_hole_data_without_any_acks"
> In this case, this seems like it’s just a side effect of the bad 
> checksums, but in case you’re interested on how that type of 
> situation can effect file extraction in Bro there’s discussion of 
> how/why here:
> https://bro-tracker.atlassian.net/browse/BIT-1255
> - Jon
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