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  • networking monitor tool

    hi,
    my company's neworking keep going down, I suspect one of the computer got virus and keep ping the router ,let it exhausted , and down, does any body know a good networking monitor tool to find out this computer?
    thanks in adance!

  • #2
    in windows 2000 there's a network sniffer... else you can user sniffer pro van mcafee..
    but, what antivirus product are you using?

    also you can run stinger (from mcafee) from a logon script. maybe that will help..
    Marcel
    Technical Consultant
    Netherlands
    http://www.phetios.com
    http://blog.nessus.nl

    MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
    "No matter how secure, there is always the human factor."

    "Enjoy life today, tomorrow may never come."
    "If you're going through hell, keep going. ~Winston Churchill"

    Comment


    • #3
      I would start at the basics-
      What actually 'Goes Down"?

      All communications- printers, file sharing, mail. etc?

      Or is the Internet access the only thing causing problems?

      An easy way to determine if there is a workstation causing the Internet access to fail would be to disconnect the Internet connection from the LAN and then place a single workstation on the Internet connection. See if you can connect and stay stable. If you cannot then you have other issues, probably in your router or your ISP connection.

      Good Luck
      Pete C

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      • #4
        what's the network sniffer in windows 2000 ? where I can find it?
        my network is only internet get down, others are fine, I have two internet access,one is DSL, one is T1, I have to keep switch btwn them, once I switched ,at beginning ,it works fine, then the internet access speed get slow down and finally, totally unaccessible.

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        • #5
          When the Internet connections go down- do you check the network connectivity before switching to the secondary internet?

          I would like to verifiy that the connections are still alive before wasting time on trying to figure out if you have a user or beconing issue.

          How many users on the LAN?

          Do you run any spyware blocking programs or cleaners? (Spybot or Adaware)

          If you are worried about video/mp3 downloads- block the download ports at your router.

          Comment


          • #6
            Originally posted by mncoughlin
            If you are worried about video/mp3 downloads- block the download ports at your router.
            What port do you use to block MP3's being downloaded over a HTTP connection?????
            Server 2000 MCP
            Development: ASP, ASP.Net, PHP, VB, VB.Net, MySQL, MSSQL - Check out my blog http://tonyyeb.blogspot.com

            ** Remember to give credit where credit is due and leave reputation points sigpic where appropriate **

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            • #7
              Re: networking monitor tool

              Originally posted by jimmyjiang
              does any body know a good networking monitor tool to find out this computer?
              You could use the Netmon capturing tool in W2K/Win2003, but that's only good for capturing packets that are either targetted at that specific server, or broadcasts.

              To get all the packets on a net you need to go into promisuos mode, that is to make the adapter capture all packets, regardless of their hardware destination address.

              A few of these tools are:

              Microsoft Network Monitor SMS - SMS version
              Ethereal - Good and free - http://www.ethereal.com
              NDG NetBoy Suite - Good but not free
              Commview - Not free
              Network Associates Sniffer Pro - One of the best, but also not free
              WildPackets EtherPeek - Nice one, not as detailed as the others
              Angry IP scanner - Quite nice

              Google these tools and find a d/l link.

              Most tools also have an analyzing option, where they take the captured data and tell you which device made the most boradcasts, which one made the most file d/l and so on.

              If you use the Microsoft .CAP files to save your captures you can also use a tool called "Dice" (free) that can do the analyzing for you.

              Get Dice from here:

              http://www.ngthomas.co.uk/dice.htm
              Cheers,

              Daniel Petri
              Microsoft Most Valuable Professional - Active Directory Directory Services
              MCSA/E, MCTS, MCITP, MCT

              Comment


              • #8
                I can't seem to find the Sniffer Pro anywhere, but I have found Sniffer Portable. Are these the same application? It appears they may have just changed the name of the product at some point.
                also does the Sniffer pro require special NIC card in windows to operate ?

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                • #9
                  just use ethereal..
                  its just as good... and free.. why wanting for mcafee then..
                  (i cant find it either anymore.. )
                  Marcel
                  Technical Consultant
                  Netherlands
                  http://www.phetios.com
                  http://blog.nessus.nl

                  MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
                  "No matter how secure, there is always the human factor."

                  "Enjoy life today, tomorrow may never come."
                  "If you're going through hell, keep going. ~Winston Churchill"

                  Comment

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