Re: Scripts for filtering a directory file captures to only include specific Subnet packets in new files in a new directory

[Kevin C <ckevinj () gmail com>]

Are you using full paths for the files and directories? Often an error like this is just because it can't locate the 
file or directories and this happens more often when wrapped by the sudo layer. 

-kc 

On Sep 30, 2010, at 3:58 PM, Phil_Deming () mechanicsbank com wrote:

> Estani, thank you so much for getting me started. That was Great Help !
> but now:
>
> The Script ran perfectly with the obvious changes needed !
> I new the Script  was working, B U T, tcpdump comes back with Permission
> Denied. I chmod to 777 and 755 with no effect.
> I ran it on Ubuntu 9.10 and 10.04, same results. I googled it and did the
> 9.04 fix and it didn't fix it.
>    (aa-complain /usr/sbin/tcpdump - This will change it to complain)
>    (aa-enforce /usr/sbin/tcpdump - This will renable the AppArmor profile
> for tcpdump)
> When I changed the Script to use tshark it ran perfectly and gave good
> results.
> What do I do to fix tcpdump on Ubuntu?
>
>
>
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>  Re: [Wireshark-users] Scripts for filtering a directory file captures to  
>  only include specific Subnet packets in new files in a new directory      
>  (Document link: Phil Deming)                                              
>
>
>  Phil Deming                                                               
>             to:                                                            
>                Estanislao Gonzalez                                         
>                                                        09/29/2010 09:25 AM 
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> Thanks. I'll try it now.  Phil
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>   Re: [Wireshark-users] Scripts for filtering a directory file captures to 
>   only include specific Subnet packets in new files in a new directory     
>
>
>   Estanislao Gonzalez                                                      
>                      to:                                                   
>                        Community support list for Wireshark                
>                                                        09/29/2010 07:42 AM 
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>   Cc:                                                                      
>      Phil_Deming                                                           
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>  From:  Estanislao Gonzalez <estanislao.gonzalez () zmaw de>                         
>
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>  To:    Community support list for Wireshark <wireshark-users () wireshark org>      
>
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>  Cc:    Phil_Deming () mechanicsbank com                                             
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>  Hi Phil,
>
> I think you could use something like:
>
> for file in second_dir/*; do
>     tcpdump -r $file src net a.a.a.a/x dst net b.b.b.b/y >> $file.filtered
> done
>
> You could join all resulting files for a given amount of time with
> tcpslice if that simple append does not do the trick.
>
> I haven't tested this out, but it should give you a clue as to where to
> go from this point.
>
> Cheers,
> Estani
>
> On 09/29/2010 12:04 AM, Phil_Deming () mechanicsbank com wrote:
> >       I am running Ubuntu 9.10 Server and am collecting  packets with
> > TShark 1.4 from about 40 Subnets (Offices)  traversing  my aggregation
> > Subnet (the Datacenter). There are 9000  64meg files collected per day
> > before overwriting begins. When a Network question arises, I copy the 1
> to
> > 3 hours of files to a 2nd Directory so that they won't be overwritten
> > later. That's about 180+  64 meg files.
> >       I need to filter all of the files in the 2nd Directory to create
> new
> > files only containing packets from 1 to 4 transmitting or receiving
> > Subnets. I need all of the IPs from each subnet.
> >       Next, want to see the "Top Talkers" during this period.  That
> should
> > be the easy part.
> >
> >       I presume grep, bash, awk editcap, tshark, tcpdump are the tools.
> Can
> > someone get me started with some scripts / examples?
> >
> >
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>
> --
> Estanislao Gonzalez
>
> Max-Planck-Institut für Meteorologie (MPI-M)
> Deutsches Klimarechenzentrum (DKRZ) - German Climate Computing Centre
> Room 108 - Bundesstrasse 45a, D-20146 Hamburg, Germany
>
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> We commit our personal best to you, every day!
>
> The information transmitted may contain confidential material and is intended only for the person or entity to which 
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> entities other than the intended recipient is prohibited. If you are not the intended recipient, please delete the 
> information from your system and contact the sender.
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