[Iftop-users] Outputting iftop to a file

[Ryan Novosielski]

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I think you'd misunderstood -- he was saying that iftop doesn't allow
you to distinguish which user is connecting, which is true. Though
presumably what you meant is "which IP," which in many cases is good
enough.

On 09/25/2012 02:20 AM, Shannon Rodrigues wrote:
> Hi Jon,
> 
> Thank you for your reply. There seems to be some mis-understanding
> here. I am looking for a tool wherein I can view download speeds of
> a particular user/ subnet. iftop does provide me that but writing
> the output to a file is almost difficult to understand.
> 
> My requirement is not to know what the users are communicating. 
> Just the total download speed is what I am looking for, but for a 
> particular user/ subnet. vmstat gives me the WAN link download
> speed, but it does not solve my purpose.
> 
> Thanks and regards, Shannon R
> 
> On Mon, Sep 24, 2012 at 9:38 PM, Jonathan Abbey 
> <jonabbey@arlut.utexas.edu <mailto:jonabbey@arlut.utexas.edu>>
> wrote:
> 
> On Mon, 24 Sep 2012 10:51:08 -0500, Shannon Rodrigues wrote: | Hi
> Jon, | | Thank you for your reply. | In my typical setup, I want a
> tool which will display download rates of a | particular user/
> subnet. I am configuring download limiting rules to user/ | subnet
> but unfortunately have no tool to verify whether the config is |
> working or not.
> 
> iftop doesn't know anything about what user is communicating, it
> just shows what ports and IP addresses are involved.
> 
> | Manually checking output of iftop is helpful, but I would like
> to push the | output to a file so that I could verify this at the
> end of the day. Getting | it listed by ports is not a necessity.
> Traffic to and from will solve my | purpose. | I would like the
> output of download rate of a user/ subnet to be written to | a file
> for lets say a 5 second interval.
> 
> Couldn't you use netstat (or ss, on more modern Linuxes) for that?
> Or tcpdump with some after the fact filtering?
> 
> iftop's claim to fame is real time curses-style graphing of
> traffic, there are plenty of tools for doing statistics gathering
> that would be more suitable for generating reports.
> 
> Jon
> 
> -- 
> -------------------------------------------------------------------------------
>
> 
Jonathan Abbey
> jonabbey@arlut.utexas.edu <mailto:jonabbey@arlut.utexas.edu> 
> Applied Research Laboratories                 The University of 
> Texas at Austin GPG Key: 71767586 at keyserver pgp.mit.edu
> <http://pgp.mit.edu>, http://www.ganymeta.org/workkey.gpg
> 
> 


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|Y#| |  | |\/| |  \ |\ |  | |Ryan Novosielski - Sr. Systems Programmer
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