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how to prevent DDoS attacks ?

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17 Nov 2023, 15:59

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  • Pandaundefined

    Spam spam spam

    Solved Configure nodebb
    34 24 Dec 2024, 10:49
    24 Dec 2024, 10:49
    2 Votes
    6 Posts
    203 Views
    phenomlabundefined
    @Panda said in Spam spam spam: ok, yes Ive seen the queue, it shows IP, but doesnt have a field for comments from registrant. It’s not designed for that. It merely serves as a gateway between posts appearing on your form or not. @Panda said in Spam spam spam: It would be better if nodebb had this plugin included in ACP list, as not only then do you know its approved and should work, but many people cant or dont want to use CLI on the server That’s a question for the NodeBB devs but in all honesty you can’t not use the CLI when installing nodebb so to be this isn’t a big deal.
  • DownPWundefined

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

    Security security server kernel ddos iptables
    34 2 Aug 2023, 13:41
    2 Aug 2023, 13:41
    0 Votes
    4 Posts
    857 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.
  • Pandaundefined

    Following the API docs but its not clear ...

    Solved Customisation api nodebb
    34 12 Jul 2023, 17:31
    12 Jul 2023, 17:31
    2 Votes
    8 Posts
    689 Views
    phenomlabundefined
    @Panda you’d be surprised. If you consider that you’d need to use the API to be able to populate a WordPress widget for example (which in turn would of course be PHP), taking this route is still immensely popular.
  • Pandaundefined

    Removing blue 'moved' tag from post

    Solved Configure nodebb
    34 26 Jun 2023, 16:25
    26 Jun 2023, 16:25
    2
    3 Votes
    16 Posts
    1k Views
    Pandaundefined
    @phenomlab Ah, got it working! I reversed the CSS addition to put z index high, and then I could see another error box saying fork title must be at least 3 characters. So made the new fork title longer and button responded.
  • Pandaundefined

    Interesting Widget code, but can't fetch API

    Solved Customisation nodebb
    34 24 Jun 2023, 19:03
    24 Jun 2023, 19:03
    2 Votes
    26 Posts
    2k Views
    phenomlabundefined
    @Panda said in Interesting Widget code, but can’t fetch API: How did you drop that widget into the post there? I hadnt seen this BSgenerator anywhere on sudonix site, do you use it somewhere already? Yes, here https://sudonix.org/topic/414/corporate-bullshit-generator?_=1687774393044 It’s not a “post” or “topic” in the common sense. It is actually a page in it’s own right and leverages nodebb-plugin-custom-pages. This in turn creates a new “route” which behaves like a page, meaning it is then exposed for widgets. @Panda said in Interesting Widget code, but can’t fetch API: Also can you explain more what you mean by calling the code externally. In my API call example, how would I go about doing that? By this, I mean create all the required code in an external JS file that is reachable by the NodeBB instance - so, in “public” for example - or in my case /public/js. The widget then “calls” that file and because it runs outside of the scope of NodeBB, you just need to return the values to the widget. Hope this makes sense?
  • phenomlabundefined

    Setting up a beta NodeBB v3 environment

    Moved Let's Build It nodebb upgrades beta1
    34 27 Jan 2023, 12:29
    27 Jan 2023, 12:29
    3
    11 Votes
    14 Posts
    1k Views
    phenomlabundefined
    @dave1904 excellent news. Thanks for the feedback
  • cagatayundefined

    Gettin Erors NodeBB

    Solved Configure nodebb eror
    34 8 Nov 2022, 13:46
    8 Nov 2022, 13:46
    0 Votes
    7 Posts
    559 Views
    cagatayundefined
    @phenomlab no forum is working goods. there is no eror message since yestarday.
  • DownPWundefined

    Plugin reaction Bug

    Solved Customisation plugin nodebb reaction
    34 3 Aug 2022, 09:57
    3 Aug 2022, 09:57
    1
    0 Votes
    15 Posts
    1k Views
    phenomlabundefined
    @DownPW That was going to be my next suggestion