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Hi all, I have a redhat server. At night i found that i have been attacked(dos and ddos). So I want to block it. Right now I have blocked icmp ...
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  1. #1
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    ICMP blocking from iptables


    Hi all,
    I have a redhat server. At night i found that i have been attacked(dos and ddos). So I want to block it. Right now I have blocked icmp type 0. Is this will solve my problem? PLease help??

  2. #2
    Linux Guru anomie's Avatar
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    At night i found that i have been attacked(dos and ddos).
    Could you be a bit more specific than that?

    Right now I have blocked icmp type 0. Is this will solve my problem?
    ICMP types: http://www.iana.org/assignments/icmp-parameters

    You haven't explained many details about how you were attacked, so hard to say if that will solve your problem.

    Note that if your goal is to stop responding to ICMP requests, there are also some kernel parameters you can tune using sysctl.

  3. #3
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    Thanks man... I will try this. I will write full details.

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