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Tools 4 monitoring network traffic

Discussion in 'Networking' started by Carldica, May 10, 2007.

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  1. Carldica

    Carldica Thread Starter

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    hi guys,

    any of you happened to know a tool that can be used for monitoring network traffic <Freeware hopefully ^_^> that can monitor all internet traffic, LAN traffic, WAN, Router <both FastEthernet and Serial>, etc ?
     
  2. invalidusername

    invalidusername

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  3. Carldica

    Carldica Thread Starter

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    hi invalidusername,

    the tool is great, thx 4 the tool.
     
  4. JohnWill

    JohnWill Retired Moderator

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    If you're running a typical SOHO router, you'll have GREAT difficulty monitoring all the traffic through the box. Since the addressed traffic only goes to the destination port, you'd have to have tapped into the middle of the router to see all the traffic. Also, think about the wireless, addressed traffic there doesn't show up on any of the wired switch ports. For certain, no tool running on a single workstation is going to be able to do this.
     
  5. Cosinus

    Cosinus

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    As I already wrote in other posts here, the best ever existing technology for capturing detailed network traffic statistics is Netflow, developed by Cisco originally. Instead of using Cisco equipment it's easy to install a PC router with a netflow probe, e.g. ipcad or ndsad. It will intercept all network packets and generate Netflow data (transmitted via Netflow protocol to a Netflow collector). For collecting and analyzing Netflow packets it can be used, e.g., Flowtools.
     
  6. Carldica

    Carldica Thread Starter

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    is it freeware?
     
  7. Cosinus

    Cosinus

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    Yes, it's freeware and opensource. However in the past is was commercial, but then the company that was developing it (NetUP Inc., www.netup.biz) shared it's code and made it opensource.
     
  8. JohnWill

    JohnWill Retired Moderator

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    I'd like to see any software intercept addressed packets passing through an unmanaged switch... Unless the packet makes it to your PC based router, it's not going to be seen. ;)
     
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