{"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\/pl\/blog\/news\/ispolzovanie-zip-bomby-dlya-borby-s-vredonosnymi-web-botami","title":{"rendered":"Wykorzystanie bomby zip do walki z z\u0142o\u015bliwymi botami internetowymi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ostatnio znacznie wzros\u0142a aktywno\u015b\u0107 bot\u00f3w internetowych indeksuj\u0105cych ruch. Opr\u00f3cz poprawnie dzia\u0142aj\u0105cych bot\u00f3w, rozprzestrzeni\u0142y si\u0119 «dzikie» boty, kt\u00f3re ignoruj\u0105 zasady indeksowania robots.txt, \u0142\u0105cz\u0105 si\u0119 z dziesi\u0105tek tysi\u0119cy r\u00f3\u017cnych adres\u00f3w IP, podszywaj\u0105 si\u0119 pod legalnych u\u017cytkownik\u00f3w i nie przestrzegaj\u0105 rozs\u0105dnej polityki intensywno\u015bci wysy\u0142ania zapyta\u0144. Te boty tworz\u0105 ogromne paso\u017cytnicze obci\u0105\u017cenie dla serwer\u00f3w, zak\u0142\u00f3caj\u0105 normalne dzia\u0142anie system\u00f3w i zabieraj\u0105 czas administratorom. Aktywno\u015b\u0107 takich bot\u00f3w jest postrzegana przez wielu jako dzia\u0142ania szkodliwe. <\/p>\n

Jako \u015brodek na spowolnienie dzia\u0142ania podobnych bot\u00f3w, a tak\u017ce bot\u00f3w skanuj\u0105cych niezabezpieczone luki w typowych aplikacjach internetowych, jeden z administrator\u00f3w zaproponowa\u0142 metod\u0119 «zip-bomby». S\u0119k metody polega na tym, \u017ce w odpowiedzi na zapytanie strony botowi internetowemu przekazywana jest tre\u015b\u0107, skutecznie skompresowana metod\u0105 «deflate», kt\u00f3rej rozmiar po dekompresji wielokrotnie przewy\u017csza rozmiar danych przesy\u0142anych przez sie\u0107. Na przyk\u0142ad, przy u\u017cyciu metody «deflate» tre\u015b\u0107 z \/dev\/zero, spakowana w 10 MB, po dekompresji wymaga 1 GB przestrzeni dyskowej. Przy u\u017cyciu metody kompresji «brotli» uda\u0142o si\u0119 osi\u0105gn\u0105\u0107 poziom, w kt\u00f3rym przesy\u0142anie 81 MB prowadzi do dekompresji 100 TB danych. <\/p>\n

Aktywacj\u0119 takiej ochrony mo\u017cna przeprowadzi\u0107 poprzez tworzenie pu\u0142apek, kt\u00f3re s\u0105 dost\u0119pne przez niewidoczne linki, oznaczone flag\u0105 ‘rel=»nofollow»‘, wy\u0142\u0105czone z indeksacji przez robots.txt i dzia\u0142aj\u0105ce przy wystarczaj\u0105co wysokim poziomie rekurencji dla bot\u00f3w pr\u00f3buj\u0105cych podszywa\u0107 si\u0119 pod zwyk\u0142ych u\u017cytkownik\u00f3w. W praktyce proponowana metoda nie jest zalecana, poniewa\u017c strona mo\u017ce zosta\u0107 wpisana na czarn\u0105 list\u0119 Google i zacznie by\u0107 oznaczana jako szkodliwa w przegl\u0105darce Chrome z w\u0142\u0105czonym trybem «Safe Browsing».
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\u0179r\u00f3d\u0142o: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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