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Blocking / Limiting Packets Containing Substring

Discussion in 'Security' started by Faqahat, Aug 25, 2017.

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  1. #1
    I am interested to know if there is a method to block or limit Receiving Packets Containing Specific Keywords/Substring. I am receiving a large amount of flood from spoofed IP addresses.They all contain Same Substrings [​IMG]
    I know a hosting provider which i dont use anymore it provided options like that.
    [​IMG]

    I am wondering if it is possible to do that in Linux Firewall or IPtables
     
    Faqahat, Aug 25, 2017 IP