I recommend using vnstat (with the -rx eth0 or tx eth0 options to show
quick-and-dirty bandwidth graphs for the respective interfaces) to see if
there's a problem, iptraf to work out who's doing it, and ntop to find out
what they're doing(nice shiny protocol and user breakdown via web page).
I've monitored the 'net usage at several restricted-bandwidth events (LAN
parties for example), and that's done just fine. If someone's hogging all
the bandwidth, add a DROP rule for their IP address on all protocols (DROP
net lan:11.22.33.44 all - - if I remember correctly), restart shorewall
(or you can learn how to manually add DROP-style rules to iptables, which
doesn't require a shorewall restart which can sometimes interrupt traffic),
and wait for the wailing and gnashing of teeth.
Also, if you're running dhcpd on the same box, you can look in the dhcp
leases file to figure out the machine name of the culprit - always useful if
you're potentially in the same room as them (not sure if this applies to
you).
Hope this helps,
Jan
On 05/04/07, Tom Eastep <[EMAIL PROTECTED]> wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Marcos Dione wrote:
> On Sat, Mar 31, 2007 at 02:26:17PM +0500, Asim Ahmed Khan wrote:
>> thanx for your suggestion. Being not-very-clever in linux, i would
>> appriciate if you or anyone else can suggest me some thing through that
i
>> can find out which user on my network is consuming / utilizing heavy
>> internet bandwidth. This is my major problem to find out which user on
my
>> network is choking bandwidth pipe. I m using shorewall 3.0.5 on Fedora
Core
>> 4.
>
> (3 years later) you can try to use iptraf in the router to see
what's going
> on. I think you can also use it in a workstation and it will capture all
the
> traffic in the net, but I'm not sure. hope it helps.
>
ntop also works well.
- -
Tom
- --
Tom Eastep \ Nothing is foolproof to a sufficiently talented fool
Shoreline, \ http://shorewall.net
Washington USA \ [EMAIL PROTECTED]
PGP Public Key \ https://lists.shorewall.net/teastep.pgp.key
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