I’m the administrator of kbin.life, a general purpose/tech orientated kbin instance.

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Joined 2 years ago
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Cake day: June 29th, 2023

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  • So on my mbin instance, it’s on cloudflare. So I filter the AS numbers there. Don’t even reach my server.

    On the sites that aren’t behind cloudflare. Yep it’s on the nginx level. I did consider firewall level. Maybe just make a specific chain for it. But since I was blocking at the nginx level I just did it there for now. I mean it keeps them off the content, but yes it does tell them there’s a website there to leech if they change their tactics for example.

    You need to block the whole ASN too. Those that are using chrome/firefox UAs change IP every 5 minutes from a random other one in their huuuuuge pools.


  • Yeah, I probably should look to see if there’s any good plugins that do this on some community submission basis. Because yes, it’s a pain to keep up with whatever trick they’re doing next.

    And unlike web crawlers that generally check a url here and there, AI bots absolutely rip through your sites like something rabid.


  • If you’re running nginx I am using the following:

    if ($http_user_agent ~* "SemrushBot|Semrush|AhrefsBot|MJ12bot|YandexBot|YandexImages|MegaIndex.ru|BLEXbot|BLEXBot|ZoominfoBot|YaK|VelenPublicWebCrawler|SentiBot|Vagabondo|SEOkicks|SEOkicks-Robot|mtbot/1.1.0i|SeznamBot|DotBot|Cliqzbot|coccocbot|python|Scrap|SiteCheck-sitecrawl|MauiBot|Java|GumGum|Clickagy|AspiegelBot|Yandex|TkBot|CCBot|Qwantify|MBCrawler|serpstatbot|AwarioSmartBot|Semantici|ScholarBot|proximic|MojeekBot|GrapeshotCrawler|IAScrawler|linkdexbot|contxbot|PlurkBot|PaperLiBot|BomboraBot|Leikibot|weborama-fetcher|NTENTbot|Screaming Frog SEO Spider|admantx-usaspb|Eyeotabot|VoluumDSP-content-bot|SirdataBot|adbeat_bot|TTD-Content|admantx|Nimbostratus-Bot|Mail.RU_Bot|Quantcastboti|Onespot-ScraperBot|Taboolabot|Baidu|Jobboerse|VoilaBot|Sogou|Jyxobot|Exabot|ZGrab|Proximi|Sosospider|Accoona|aiHitBot|Genieo|BecomeBot|ConveraCrawler|NerdyBot|OutclicksBot|findlinks|JikeSpider|Gigabot|CatchBot|Huaweisymantecspider|Offline Explorer|SiteSnagger|TeleportPro|WebCopier|WebReaper|WebStripper|WebZIP|Xaldon_WebSpider|BackDoorBot|AITCSRoboti|Arachnophilia|BackRub|BlowFishi|perl|CherryPicker|CyberSpyder|EmailCollector|Foobot|GetURL|httplib|HTTrack|LinkScan|Openbot|Snooper|SuperBot|URLSpiderPro|MAZBot|EchoboxBot|SerendeputyBot|LivelapBot|linkfluence.com|TweetmemeBot|LinkisBot|CrowdTanglebot|ClaudeBot|Bytespider|ImagesiftBot|Barkrowler|DataForSeoBo|Amazonbot|facebookexternalhit|meta-externalagent|FriendlyCrawler|GoogleOther|PetalBot|Applebot") { return 403; }

    That will block those that actually use recognisable user agents. I add any I find as I go on. It will catch a lot!

    I also have a huuuuuge IP based block list (generated by adding all ranges returned from looking up the following AS numbers):

    AS45102 (Alibaba cloud) AS136907 (Huawei SG) AS132203 (Tencent) AS32934 (Facebook)

    Since these guys run or have run bots that impersonate real browser agents.

    There are various tools online to return prefix/ip lists for an autonomous system number.

    I put both into a single file and include it into my web site config files.

    EDIT: Just to add, keeping on top of this is a full time job!



  • Not sure how it is in the US. But here in the UK there’s two ways a business can export.

    1: They pre-clear the customs duty and include it in the sales total (so it’s like paying sales tax at the checkout, except it’s the pre-cleared duty fees). Then the parcel has a nice duty paid stamp and goes straight through customs (I guess unless customs are suspicious and check into it).

    2: They just charge you the item price with no tax applied. In which case you need to pay local tax and duties applicable once the product arrives. Here it’s a bit different. They will hold it at the local depot and you can either go there and pay + collect, or you can pay online and it will be rescheduled for delivery once you pay.

    As others have said, it’s not a scam. There’s no requirement for a business to do option 1, and it’s likely only viable for large businesses to register and have someone/software that knows the various duties required for various countries.

    I’ve ordered from newegg and B&M in the past for example, and in both cases the items were pre-cleared and arrived promptly without any hassle.

    Maybe there’s something similar for imports into the US too?