Monitoring network, LAN and bandwith activity for server

Posted on 2007-10-17
Last Modified: 2013-11-09
Is there any good software free or commercial that anyone can recommend to monitor our server.
We host over 100 websites on a dedicated server and all the 100 IP's are on the single NIC.  What I want to do is monitor traffic to each IP and total network traffic to the server.  We had a few issues with downtime intermittently and I'm trying to isolate the problem.  Any suggestions or recommendation would be really helpful.
Question by:Cobraiti
    LVL 5

    Expert Comment

    If you are hosting that many sites, you may want to consider a good hardware firewall solution.
    Check out the watchguard family of products.
    Their logfile, bandwidth monitors, and reporting is wonderful!
    Hope that helps.

    Author Comment

    The webserver sits behind our ISP's hardware firewall (Cisco) has been reliable. Except we don't get any reports. I was thinking more of software that runs on the server itself that monitors processes, LAN, system health, network traffic etc.
    LVL 63

    Accepted Solution

    Monitor bandwidth, some provide more details than others.

    Here is a summary of the recommendations:
    1.  PRTG (two recommendations) -
    2.  Websense -
    3.  8e6  -
    4.  mrtg -
    5.  ntop-xtra -
    6.  iPrism -
    7.  NetFlow Analyzer -

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