{"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\/nl\/blog\/news\/ispolzovanie-zip-bomby-dlya-borby-s-vredonosnymi-web-botami","title":{"rendered":"Het gebruik van een zip-bom om kwaadaardige web-bots te bestrijden.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>De laatste tijd is de activiteit van web-bots die verkeer indexeren aanzienlijk toegenomen. Naast goed functionerende bots zijn er ook 'woeste' bots verschenen, die de indexeringsregels van robots.txt negeren, afkomstig zijn van tienduizenden verschillende IP-adressen, zich voordoen als legitieme gebruikers en geen redelijke verzendintensiteit hanteren. Deze bots cre\u00ebren enorme parasitaire belasting op servers, verstoren de normale werking van systemen en kosten beheerders veel tijd. De activiteit van dergelijke bots wordt door velen als kwaadaardig beschouwd.     <\/p>\n<p>Als maatregel om de werking van dergelijke bots, evenals bots die onverholpen kwetsbaarheden in standaard webtoepassingen scannen, te vertragen, heeft een van de beheerders de methode van 'zip-bommen' voorgesteld. Het doel van de methode is dat bij een verzoek om een pagina de web-bot inhoud ontvangt die effici\u00ebnt is gecomprimeerd met de 'deflate'-methode, waarbij de grootte na decompressie veel groter is dan de via het netwerk verzonden gegevens. Bijvoorbeeld, bij het gebruik van de 'deflate'-methode vereist de inhoud van \/dev\/zero, verpakt in 10 MB, na decompressie 1 GB aan schijfruimte. Bij het gebruik van de compressiemethode 'brotli' is het gelukt een niveau te bereiken waarbij het verzenden van 81 MB leidt tot decomprimeren van 100 TB aan gegevens.      <\/p>\n<p>Deze bescherming kan worden geactiveerd door het cre\u00ebren van vallen, die toegankelijk zijn via onzichtbare links, gemarkeerd met de vlag 'rel=\"nofollow\"', uitgesloten van indexering via robots.txt en die afgaan bij een voldoende hoog niveau van recursie voor bots die proberen zich voor te doen als gewone gebruikers. In de praktijk wordt de voorgestelde methode niet aanbevolen, omdat de site door Google op de zwarte lijst kan worden gezet en als kwaadaardig kan worden gemarkeerd in de Chrome-browser met de 'Safe Browsing'-modus ingeschakeld.<br \/>\n<br \/>Bron: <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 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