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Free network monitoring tool

  • 23-01-2008 4:54pm
    #1
    paulusdu
    Registered Users, Registered Users 2 Posts: 514 ✭✭✭


    Anybody got a suggestion for a free network monitoring tool to monitor network usage on pc's on a LAN.
    I'm experiencing slowdowns at certain times of the day and no one is owning up to it.
    I just need to monitor network usuage from eiher IP addresses or Mac Addresses. I know a few apps that can do this, but are prety pricey, so im looking for a free one to see will that do the job for me first


Comments

  • #2
    Moonbeam
    Moderators, Education Moderators, Society & Culture Moderators Posts: 18,986 Mod ✭✭✭✭Moonbeam


    Cactai
    Cricket or
    Mrtg

    Should do the trick.


  • #3
    po0k
    Registered Users, Registered Users 2 Posts: 15,817 ✭✭✭✭po0k


    What gateway/router do you have?
    You'll need to check if it supports SNMP (Simple Network Management Protocol), and configure the Read-Only community string (change it to something other than 'public'). It's advisable to change the Read-Write community string too (normally 'private').
    It then depends on what you want to monitor and what the router exposes via SNMP.
    Monitoring bandwidth usage by MAC, IP or physical port should be easy. Determining which is WAN-bound or which is just local to the LAN (Windows filesharing) could be a little more difficult.
    If you're connected via a switch to the router, and it supports SNMP, you should be able to monitor the bandwidth on each port.

    The best thing about monitoring from the devices rather than the PCs is that it's passive and they won't know it's happening.


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