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Thread: Forum bombed by thousands of connections

  1. #1
    thinBasic author ErosOlmi's Avatar
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    Forum bombed by thousands of connections

    It is a couple of days we are fighting against a kind of connection bombing from thousands of simultaneous connections from different sources.
    Forum was unusable for 2 days because cpu and max background process were to the limit of our provider plan

    We have blocked for a while some IP ranges in order to reduce simultaneous connections
    Most connections were coming from AWS, Azure, Google, applebot.apple.com, Petalsearch.com ... and other scan bots

    We also limited the possibilities of GUEST users: they can only see forum home page and not go further in threads or read posts.
    You must be logged in order to see posts.
    I will leave this limitation for a while and see what happen.

    Now forum is still available but bombing is not ending ... anyway now I can manage it and fine control remote IPs

    Will see next days.

    Ciao
    Eros
    Last edited by ErosOlmi; 23-12-2022 at 14:40.
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  2. #2
    thinBasic author ErosOlmi's Avatar
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    Community forum still bombed by some bot/crawlers
    In particular hundred of threads from applebot.apple.com
    Banned its ip range
    17.241.0.0/16, will see
    www.thinbasic.com | www.thinbasic.com/community/ | psch.thinbasic.com
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  3. #3
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    Question Bombing

    Hi Eros,

    Does a captcha would help ??


    Best wishes for the end of year.

    Dany

  4. #4
    thinBasic author ErosOlmi's Avatar
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    Ciao,

    no if I want leave forum home page at least visible to all.
    I can make forum private and leave just one login page but its not what I want.

    At the moment if you are a guest you can only see forum home page and posts are visible only to registered users.
    Is not what I want, I prefer to have open forum and leave people register if they want but actually I HAD TO reduce access hoping this bombing will last in few weeks.

    Today I blocked many IPs from Apple bot
    Also blocked many IPs coming from a Microsoft network but they do not have reverse DNS so I cannot get the name.
    Will see next days.

    Up to about 800/900 simultaneous connections ... forum slow down a bit but it is still usable
    Above that number forum is unusable even for going into admin panel.
    www.thinbasic.com | www.thinbasic.com/community/ | psch.thinbasic.com
    Win10Pro 64bit - 8GB Ram - Intel i7 M620 2.67GHz - NVIDIA Quadro FX1800M 1GB

  5. #5
    thinBasic author ErosOlmi's Avatar
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    Re-activated almost all forum functionalities.
    I think bombing was activated by crazy crawler activities by some search engine like Apple, Microsoft and some others I didn't know
    After blocking their ip ranges for a while now their activity seems returned to acceptable level.
    www.thinbasic.com | www.thinbasic.com/community/ | psch.thinbasic.com
    Win10Pro 64bit - 8GB Ram - Intel i7 M620 2.67GHz - NVIDIA Quadro FX1800M 1GB

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