Question

Wireshark Upload Monitor Filter

Asked by: esitech

I want to use wireshark to monitor whats utilizing our upload bandwidth but was wondering what filter I need to set ... Thanks

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Asked On
2009-01-27 at 19:27:00ID24089514
Tags

Network Analyzer

Topic

Network Analysis Software

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Answers

 

by: uetian1707Posted on 2009-01-27 at 21:06:18ID: 23483664

Hi,

How is your network setup? Suppose it is setup as below;

                                                                              |
                                                                              |
                                                                              |
GatewayRouter ---------> CoreSwitch----------------| LAN
                                                                              |
                                                                              |
                                                                              |

In the above scenario, you can enable port mirroring on the core switch and check which port is causing more traffic.

More easier way is to use some SNMP-enabled application to monitor your switch ports and you will be able to see which computer is causing more traffic. Popular NMS are;

SolarWinds Orion      www.solarwinds.com      Propriety
Adventnet OP Manager      www.adventnet.com      Propriety
WhatsupGold      http://www.whatsupgold.com      Propriety
Observer      www.netinst.com      Propriety
AutoNOC      www.autonoc.com      Propriety
CommView      www.tamos.com      Propriety

Open-Source  
         
Ntop      www.ntop.org      LAMP based NMS
Bandwidthd      bandwidthd.sourceforge.net      LAMP based NMS
Etherape      etherape.sourceforge.net      LAMP based NMS
MRTG      oss.oetiker.ch/mrtg      RRDTool
Cacti      www.cacti.net      RRDTool

If your device supports Netflows, or Jflow;

Flow Analyzers            

SolarWinds NetFlow Analyzer      www.solarwinds.com      NetFlow/SFlow
Scrutinizer NetFlow/Sflow Analyzer      www.plixer.com      NetFlow/SFlow
Caligare Flow Inspector      www.caligare.com      NetFlow/SFlow
StealthWatch® Xe       www.lancope.com      SFlow
Adventnet Netflow Analyzer      www.adventnet.com      NetFlow
PRTG      www.paessler.com/prtg      NetFlow/RRDTool

Explaining the above lists, the standard SNMP based NMS will allow you to monitor the bandwidth, have support for Syslogs and some of them also support VoIP monitoring support.  The flow analyzers can be helpful to get the per protocol usage details. They can only be deployed if your network gear supports J-flow, Net-flow or S-Flow.

Personal recommendations are using Solarwinds Orion, Cacti or Ntop.

 

by: esitechPosted on 2009-01-27 at 21:38:20ID: 23483769

I really appreciate your detailed description ... Right now we are trying to find out what is using all our upload bandwidth, so I currently have the port in which the internet comes through mirrored to a PC running Wireshark... However I'm unsure what capture filters I should be applying as I only want to log the source and the destination using our upload bandwidth... Thanks in advance,.

 

by: uetian1707Posted on 2009-01-27 at 21:47:29ID: 23483802

What is the gateway on your LAN machines? I guess if you make the ipfilter of your gateway machine as the destination then you will get to know the source.

20120131-EE-VQP-002

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