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  1. #1
    Join Date
    Apr 2009

    how to find the ddos target ip

    I have one server that is running some VPSes, if one vps is DDoSed, the network of the whole server will be unaccessable.

    the question is how can I find out which ip is attacked, so I can request a null route for that IP.


  2. #2
    Join Date
    May 2007
    Chester, UK
    You can look at the network graphs / network utilization for the specific VPSs, see if any have spiked more than the average for those VPSs.

    Just to go into each VPS and check them out yourself.
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  3. #3
    Join Date
    Apr 2009
    but if the server is DDoSed, I can not connect to the server any more.

    How can I check network graphs of each vps?

  4. #4
    Join Date
    Feb 2005
    Scotland, UK

    You could do this with a crontabbed python/bash script.

    You can account packets and bytes on a per-IP basis with iptables - you will be able to pinpoint the attack and maybe even null it with some good scripts.

    Works well for us.
    Last edited by ServerSean; 08-10-2009 at 05:41 AM. Reason: IP tables > iptables
    Sean McRobbie - Specialising in virtualisation since 2005. - We create, we host, we connect - Fully Managed VPS & Dedicated Hosting

  5. #5
    With the help of this command you can find if your server is under attack or not.

    # netstat -nat | awk '{print $6}' | sort | uniq -c | sort -n
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