On Fri, Jun 12, 2009 at 12:42 AM, Roberto Ragusa<mail@xxxxxxxxxxxxxxxx> wrote: > Steve Repo wrote: >> Hello, >> >> I have a network of 20 hosts and all of them are windows machines >> except one Fedora 10 box. One of the machines is using all the >> bandwidth and seem to be uploading something. We have a liberal >> network policy and policing the firewall is beyond my hands. >> >> What i'd like to do is identify this rogue machine that is uploading >> something and using our bandwidth. I thought I could identify the box >> that is using up the most network bandwidth. Oh, we all machines are >> on DHCP. >> >> Should I install iftop and run it on the fedora box? or do i have to >> make fedora as the router to capture all traffic? Any other tools that >> does bandwidth monitoring? > > Excuse me if what I'm going to say sounds too stupid, but... > could you have a look at the LEDs behind the machines? > could you have a look at the LEDs on your network switch? > could you unplug each machine for a few seconds and see if > the traffic slows down? > > Because it is not easy to observe the traffic on your Fedora box; > if the network is switched you have to rearrange things > so the traffic actually goes to the Fedora box, as you > already noted yourself. > > If the used bandwidth is really huge, the involved machine > could be slower in responding to pings. > Try pinging them all and see if one of them is remarkably slower. > You can ping them one by one or all together (option -b). > Thanks for all the suggestions. We found the culprit by watching LED's on NIC cards during off hours! It may have sounded a silly idea .. but it worked! Steve -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
