{"id":123874,"date":"2025-04-30T09:05:06","date_gmt":"2025-04-30T07:05:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ispolzovanie-zip-bomby-dlya-borby-s-vredonosnymi-web-botami"},"modified":"2025-04-30T09:05:06","modified_gmt":"2025-04-30T07:05:06","slug":"ispolzovanie-zip-bomby-dlya-borby-s-vredonosnymi-web-botami","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/ispolzovanie-zip-bomby-dlya-borby-s-vredonosnymi-web-botami","title":{"rendered":"Brug af zip-bomber til at bek\u00e6mpe skadelige web-bots","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>P\u00e5 det seneste er aktiviteten af web-bots, der indekserer trafik, steget betydeligt. Ud over korrekt fungerende bots har der ogs\u00e5 v\u00e6ret en stigning i 'aggressive' bots, der ignorerer reglerne for indeksopbygning i robots.txt, som kommer fra titusinder af forskellige IP-adresser, udgiver sig for at v\u00e6re legitime brugere, og som ikke overholder en rimelig anmodningsfrekvens. Disse bots skaber en enorm parasit\u00e6r belastning p\u00e5 serverne, forstyrrer normale systemoperationer og tager tid fra administratorerne. Aktiviteten af s\u00e5danne bots opfattes af mange som skadelige handlinger.     <\/p>\n<p>Som en foranstaltning til at bremse s\u00e5danne bots, samt bots der scanner ukorrigerede s\u00e5rbarheder i typiske web-applikationer, foreslog en af administratorerne metoden 'zip-bombe'. Id\u00e9en med metoden er, at web-botten i respons p\u00e5 en sideanmodning f\u00e5r sendt indhold, der effektivt er komprimeret med metoden 'deflate', hvis st\u00f8rrelse ved udpakhning mange gange overstiger st\u00f8rrelsen p\u00e5 de data, der sendes via netv\u00e6rket. For eksempel, n\u00e5r metoden 'deflate' anvendes, vil indholdet fra \/dev\/zero, pakket i 10 MB, ved udpakhning kr\u00e6ve 1 GB diskplads. Ved brug af komprimeringsmetoden 'brotli' er det lykkedes at opn\u00e5 et niveau, hvor overf\u00f8rslen af 81 MB resulterer i udpakhning af 100 TB data.      <\/p>\n<p>En s\u00e5dan beskyttelse kan aktiveres ved at oprette f\u00e6lder, der er tilg\u00e6ngelige via usynlige links, markeret med flagget \u2018rel=&#187;nofollow&#187;\u2019, der er udelukket fra indeksering gennem robots.txt og aktiveres ved et tilstr\u00e6kkeligt h\u00f8jt niveau af rekursion for bots, der fors\u00f8ger at udgive sig for at v\u00e6re almindelige brugere. I praksis anbefales det ikke at anvende den foresl\u00e5ede metode, da websitet kan blive sortlistet af Google og begynde at blive markeret som skadeligt i Chrome-browseren med aktiveret 'Safe Browsing'-tilstand.<br \/>\n<br \/>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63163\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0432\u043e\u0437\u0440\u043e\u0441\u043b\u0430 \u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u044c web-\u0431\u043e\u0442\u043e\u0432, \u0438\u043d\u0434\u0435\u043a\u0441\u0438\u0440\u0443\u044e\u0449\u0438\u0445 \u0442\u0440\u0430\u0444\u0438\u043a. \u041f\u043e\u043c\u0438\u043c\u043e \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0445 \u0431\u043e\u0442\u043e\u0432 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0438 &#171;\u043d\u0435\u0438\u0441\u0442\u043e\u0432\u044b\u0435&#187; \u0431\u043e\u0442\u044b, \u0438\u0433\u043d\u043e\u0440\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043f\u0440\u0430\u0432\u0438\u043b\u0430 \u0438\u043d\u0434\u0435\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f robots.txt, \u043b\u0435\u0437\u0443\u0449\u0438\u0435 \u0441 \u0434\u0435\u0441\u044f\u0442\u043a\u043e\u0432 \u0442\u044b\u0441\u044f\u0447 \u0440\u0430\u0437\u043d\u044b\u0445 IP, \u043f\u0440\u0438\u0442\u0432\u043e\u0440\u044f\u044e\u0449\u0438\u0435\u0441\u044f \u043b\u0435\u0433\u0438\u0442\u0438\u043c\u043d\u044b\u043c\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c\u0438 \u0438 \u043d\u0435 \u043f\u0440\u0438\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u0435\u0441\u044f \u0440\u0430\u0437\u0443\u043c\u043d\u043e\u0439 \u043f\u043e\u043b\u0438\u0442\u0438\u043a\u0438 \u0438\u043d\u0442\u0435\u043d\u0441\u0438\u0432\u043d\u043e\u0441\u0442\u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0438 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432. \u0414\u0430\u043d\u043d\u044b\u0435 \u0431\u043e\u0442\u044b \u0441\u043e\u0437\u0434\u0430\u044e\u0442 \u043e\u0433\u0440\u043e\u043c\u043d\u0443\u044e \u043f\u0430\u0440\u0430\u0437\u0438\u0442\u043d\u0443\u044e \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0443 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u044b, \u043d\u0430\u0440\u0443\u0448\u0430\u044e\u0442 \u043d\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u0443\u044e \u0440\u0430\u0431\u043e\u0442\u043e\u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u0441\u0438\u0441\u0442\u0435\u043c \u0438 \u043e\u0442\u043d\u0438\u043c\u0430\u044e\u0442 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