[nsp] Suggestions on tracking down bandwidth offenders

Tony Mucker Tony at tonymucker.com
Wed Jul 14 13:46:22 EDT 2004


I'm using a PIX 520, PIXOS 6.3 (sorry, forgot to mention that).  I tried 
the ip accounting for the output packets, but unfortunately all the 
traffic is going to the firewall.  Is there anything I can monitor on 
the firewall to do this?

joshua sahala wrote:

>On (14/07/04 10:24), Tony Mucker wrote:
>  
>
>>I've got a bandwidth problem (who doesn't).  Something has been 
>>saturating my poor little T1 for 24 hours straight now.  For those of 
>>you curious, here's what it looks like:
>>
>>http://www .ghideon.com/router-day.png
>>
>>Remove the white space and enjoy.  In the past I've used ethereal dumps 
>>to figure out who the big talkers were, but frankly it takes too long to 
>>crunch all the packets.  I've also tried etherApe, but the analysis 
>>makes my poor little laptop crawl.  Are there any tools out there that 
>>will speed this up?  Possibly by looking at the firewall logs?
>>
>>    
>>
>
>depends on what kind of firewall you have - there are scripts for
>various firewalls, providing you have some sort of accounting turned
>on.  for your router you can do some basic accounting too.  either
>using netflow or ip accouting.  google for top talkers scripts for
>each
>
>/joshua
>  
>



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