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how to prevent DDoS attacks ?

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  • ahmedundefined

    nodebb error logs

    Bugs
    6
    4 Votes
    6 Posts
    181 Views
    ahmedundefined

    I just wanted to ask because I don’t have much knowledge about the new installation.
    Thank you for the explanatory answer.

  • phenomlabundefined

    Threaded post support for NodeBB

    Let's Build It
    146
    50 Votes
    146 Posts
    18k Views
    phenomlabundefined

    Updated git for above change

    https://github.com/phenomlab/nodebb-harmony-threading/commit/14a4e277521d83d219065ffb14154fd5f5cfac69

  • DownPWundefined

    Setting for high load and prevent DDoS (sysctl, iptables, crowdsec or other)

    Security
    4
    0 Votes
    4 Posts
    395 Views
    phenomlabundefined

    @DownPW 🙂 most of this really depends on your desired security model. In all cases with firewalls, less is always more, although it’s never as clear cut as that, and there are always bespoke ports you’ll need to open periodically.

    Heztner’s DDoS protection is superior, and I know they have invested a lot of time, effort, and money into making it extremely effective. However, if you consider that the largest ever DDoS attack hit Cloudflare at 71m rps (and they were able to deflect it), and each attack can last anywhere between 8-24 hours which really depends on how determined the attacker(s) is/are, you can never be fully prepared - nor can you trace it’s true origin.

    DDoS attacks by their nature (Distributed Denial of Service) are conducted by large numbers of devices whom have become part of a “bot army” - and in most cases, the owners of these devices are blissfully unaware that they have been attacked and are under command and control from a nefarious resource. Given that the attacks originate from multiple sources, this allows the real attacker to observe from a distance whilst concealing their own identity and origin in the process.

    If you consider the desired effect of DDoS, it is not an attempt to access ports that are typically closed, but to flood (and eventually overwhelm) the target (such as a website) with millions of requests per second in an attempt to force it offline. Victims of DDoS attacks are often financial services for example, with either extortion or financial gain being the primary objective - in other words, pay for the originator to stop the attack.

    It’s even possible to get DDoS as a service these days - with a credit card, a few clicks of a mouse and a target IP, you can have your own proxy campaign running in minutes which typically involves “booters” or “stressers” - see below for more

    https://heimdalsecurity.com/blog/ddos-as-a-service-attacks-what-are-they-and-how-do-they-work

    @DownPW said in Setting for high load and prevent DDoS (sysctl, iptables, crowdsec or other):

    in short if you have any advice to give to secure the best.

    It’s not just about DDos or firewalls. There are a number of vulnerabilities on all systems that if not patched, will expose that same system to exploit. One of my favourite online testers which does a lot more than most basic ones is below

    https://www.immuniweb.com/websec/

    I’d start with the findings reported here and use that to branch outwards.

  • phenomlabundefined

    Unable to change icon in NodeBB navigation

    Tips
    1
    1 Votes
    1 Posts
    114 Views
    No one has replied
  • Pandaundefined

    Upgrade to NodeBB v3? 2BB or not 2BB, that is the question!

    Solved Configure
    8
    4 Votes
    8 Posts
    335 Views
    phenomlabundefined

    @Panda said in Upgrade to NodeBB v3? 2BB or not 2BB, that is the question!:

    So although thats a plugin it has Widget like element and stopped working on the Theme change

    Which is normal based on the widgets being reset when you change themes.

  • cagatayundefined

    NodeBB v3

    Announcements
    2
    3 Votes
    2 Posts
    174 Views
    phenomlabundefined

    @cagatay JS will work fine - no changes there, and there are no plans to drop support for jQuery. More of an issue is the CSS - for which there are quite a few breaking changes. Keep an eye on sudonix.dev (my development site) where you can see progress in relation to how I am tackling the compatibility issues.

  • Madchatthewundefined

    Link vs Refresh

    Solved Customisation
    20
    8 Votes
    20 Posts
    950 Views
    phenomlabundefined

    @pobojmoks Do you see any errors being reported in the console ? At first guess (without seeing the actual code or the site itself), I’d say that this is AJAX callback related

  • crazycellsundefined

    is "night mode" shifting the forum several pixels up?

    Solved Configure
    8
    4 Votes
    8 Posts
    530 Views
    phenomlabundefined

    @crazycells hmm. Good point. I actually use my own version of the dark mode plugin, so not entirely sure. However, I think the CSS is probably the same. I’m not at my PC currently but can check and advise later.