{"id":53188,"date":"2019-11-26T00:00:00","date_gmt":"2019-11-25T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/v-ublock-origin-dobavlena-zashhita-ot-novogo-metoda-otslezhivaniya-manipuliruyushhego-imenami-v-dns"},"modified":"2020-02-18T14:01:04","modified_gmt":"2020-02-18T11:01:04","slug":"v-ublock-origin-dobavlena-zashhita-ot-novogo-metoda-otslezhivaniya-manipuliruyushhego-imenami-v-dns","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/v-ublock-origin-dobavlena-zashhita-ot-novogo-metoda-otslezhivaniya-manipuliruyushhego-imenami-v-dns","title":{"rendered":"Ublock Origin har f\u00e5tt skydd mot den nya metoden f\u00f6r sp\u00e5rning som manipulerar namn i DNS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Anv\u00e4ndare av uBlock Origin att vid den f\u00f6rsta HTTP-f\u00f6rfr\u00e5gan (3), som skickades under skapandet av volymen, l\u00e4ggs<\/a><\/noindex> till\u00e4mpning av annonseringsn\u00e4tverk och webbanalysystem f\u00f6r en ny teknik f\u00f6r att sp\u00e5ra r\u00f6relser och infoga annonsblock som inte blockeras av uBlock Origin och andra till\u00e4gg f\u00f6r att filtrera o\u00f6nskat inneh\u00e5ll. <\/p>\n

Metoden g\u00e5r ut p\u00e5 att webbplats\u00e4gare som vill l\u00e4gga in kod f\u00f6r sp\u00e5rning eller visning av annonser skapar en separat subdom\u00e4n i DNS som h\u00e4nvisar till servern f\u00f6r annonseringsn\u00e4tverket eller webbanalytik (till exempel skapas en CNAME-post f7ds.liberation.fr som pekar p\u00e5 sp\u00e5rningsservern liberation.eulerian.net). P\u00e5 s\u00e5 s\u00e4tt laddas annonskoden formellt fr\u00e5n samma prim\u00e4ra dom\u00e4n som webbplatsen och blockeras d\u00e4rf\u00f6r inte. Namnet p\u00e5 subdom\u00e4nen v\u00e4ljs i form av en slumpm\u00e4ssig identifierare vilket g\u00f6r det sv\u00e5rt att blockera efter m\u00f6nster, eftersom subdom\u00e4nen kopplad till annonseringsn\u00e4tverket \u00e4r sv\u00e5r att s\u00e4rskilja fr\u00e5n subdom\u00e4ner som anv\u00e4nds f\u00f6r att ladda andra lokala resurser p\u00e5 sidan. <\/p>\n

Utvecklare av uBlock Origin f\u00f6reslog<\/a><\/noindex> anv\u00e4nda uppl\u00f6sning<\/a><\/noindex> av namn i DNS f\u00f6r att best\u00e4mma den relaterade v\u00e4rden via CNAME. Metoden genomf\u00f6rd<\/a><\/noindex> b\u00f6rjar fr\u00e5n
\nexperimentell version uBlock Origin 1.24.1b3<\/a><\/noindex> f\u00f6r Firefox<\/a><\/noindex>. F\u00f6r att aktivera kontroll i avancerade inst\u00e4llningar b\u00f6r v\u00e4rdet cnameAliasList st\u00e4llas in p\u00e5 «*», i detta fall kommer alla kontroller mot svartlistor att dupliceras \u00e4ven f\u00f6r namn som definieras via CNAME. Vid installation av uppdateringen kr\u00e4vs beh\u00f6righet att h\u00e4mta information fr\u00e5n DNS.<\/p>\n

\"Ublock<\/a><\/noindex><\/center><\/p>\n

F\u00f6r Chrome kan CNAME-kontrollen inte l\u00e4ggas till, eftersom API dns.resolve()<\/a><\/noindex> endast \u00e4r tillg\u00e4ngligt f\u00f6r till\u00e4gg i Firefox och st\u00f6ds inte i Chrome. Ur prestandasynpunkt b\u00f6r CNAME-uppl\u00f6sning inte leda till ytterligare overhead, f\u00f6rutom processorresurserna som g\u00e5r \u00e5t f\u00f6r att till\u00e4mpa reglerna f\u00f6r ett annat namn, eftersom webbl\u00e4saren redan har utf\u00f6rt uppl\u00f6sningen och v\u00e4rdet b\u00f6r vara cachat. Skyddmetoden kan kringg\u00e5s genom att direkt koppla namn till IP utan att anv\u00e4nda CNAME, men en s\u00e5dan metod komplicerar underh\u00e5llet (om annonseringsn\u00e4tverkets IP-adress \u00e4ndras, m\u00e5ste man se till att uppdatera data p\u00e5 alla DNS-servrar hos utgivarna) och kan kringg\u00e5s genom att skapa en svartlista \u00f6ver IP-adresser f\u00f6r sp\u00e5rare.<\/p>\n

<\/a><\/noindex><\/p>\n

K\u00e4lla: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f\u0445 \u0434\u043b\u044f \u043e\u0442\u0441\u0435\u0438\u0432\u0430\u043d\u0438\u044f \u043d\u0435\u0436\u0435\u043b\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430. \u0421\u0443\u0442\u044c \u043c\u0435\u0442\u043e\u0434\u0430 \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0432\u043b\u0430\u0434\u0435\u043b\u044c\u0446\u044b \u0441\u0430\u0439\u0442\u043e\u0432, \u0436\u0435\u043b\u0430\u044e\u0449\u0438\u0435 \u0440\u0430\u0437\u043c\u0435\u0441\u0442\u0438\u0442\u044c \u043a\u043e\u0434 \u0434\u043b\u044f \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u044f \u0438\u043b\u0438 \u043f\u043e\u043a\u0430\u0437\u0430 \u0440\u0435\u043a\u043b\u0430\u043c\u044b, \u0441\u043e\u0437\u0434\u0430\u044e\u0442 \u0432 DNS \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u043f\u043e\u0434\u0434\u043e\u043c\u0435\u043d, 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