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how to prevent DDoS attacks ?

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    Test of youtube embeds

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    Sampo2910undefined

    @phenomlab Perfect!!! Many thanks.

  • DownPWundefined

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

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    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

    What is this bar called?

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    DownPWundefined

    This is good 👍

  • Pandaundefined

    SEO and Nodebb

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    phenomlabundefined

    @Panda It’s the best it’s ever been to be honest. I’ve used a myriad of systems in the past - most notably, WordPress, and then Flarum (which for SEO, was absolutely dire - they never even had SEO out of the box, and relied on a third party extension to do it), and NodeBB easily fares the best - see below example

    https://www.google.com/search?q=site%3Asudonix.org&oq=site%3Asudonix.org&aqs=chrome..69i57j69i60j69i58j69i60l2.9039j0j3&sourceid=chrome&ie=UTF-8#ip=1

    However, this was not without significant effort on my part once I’d migrated from COM to ORG - see below posts

    https://community.nodebb.org/topic/17286/google-crawl-error-after-site-migration/17?_=1688461250365

    And also

    https://support.google.com/webmasters/thread/221027803?hl=en&msgid=221464164

    It was painful to say the least - as it turns out, there was an issue in NodeBB core that prevented spiders from getting to content, which as far as I understand, is now fixed. SEO in itself is a dark art - a black box that nobody really fully understands, and it’s essentially going to boil down to one thing - “content”.

    Google’s algorithm for indexing has also changed dramatically over the years. They only now crawl content that has value, so if it believes that your site has nothing to offer, it will simply skip it.

  • Pandaundefined

    Sidebar Widget is no longer on the side!

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    phenomlabundefined

    @Panda said in Sidebar Widget is no longer on the side!:

    Ah, so sidebar wont work on mobile?

    Correct. If you review the docs on bootstrap, you’ll notice that it is designed on a grid system

    https://getbootstrap.com/docs/5.0/layout/grid/

    What I mean by changing the category is moving it on here to general as you posted it in bugs, when it isn’t.

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    phenomlabundefined

    @crazycells pleasure. Using percentages makes much more sense in this case. It’s the same argument with px vs pt vs em with fonts, margins, padding, etc., in the sense that em is generally preferred over px and pt

    https://stackoverflow.com/questions/609517/why-em-instead-of-px

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    phenomlabundefined

    @cagatay no problems

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    [NODEBB] Wallpapers BUG on Firefox Mobile ?

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    phenomlabundefined

    @downpw I’m inclined to agree with this. There isn’t much else you can do, and provided it works with no odd looking artefacts in other browsers, then ok. The :before and :after are pseudo classes and very well supported across all browsers (except perhaps Internet Exploder, but who uses that these days ?)