{"id":38794,"date":"2019-10-31T22:25:59","date_gmt":"2019-10-31T19:25:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-tor-otklyucheny-800-iz-6000-uzlov-iz-za-primeneniya-ustarevshego-po\/"},"modified":"2019-10-31T22:25:59","modified_gmt":"2019-10-31T19:25:59","slug":"v-tor-otklyucheny-800-iz-6000-uzlov-iz-za-primeneniya-ustarevshego-po","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/v-tor-otklyucheny-800-iz-6000-uzlov-iz-za-primeneniya-ustarevshego-po","title":{"rendered":"V Tor bylo vypnuto 800 ze 6000 uzl\u016f kv\u016fli pou\u017eit\u00ed zastaral\u00e9ho softwaru.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1\u0159i anonymn\u00ed s\u00edt\u011b Tor varovali<\/a><\/noindex> o proveden\u00ed rozs\u00e1hl\u00e9ho \u00faklidu uzl\u016f, na kter\u00fdch je pou\u017e\u00edv\u00e1n zastaral\u00fd software, jeho\u017e podpora byla ukon\u010dena. Dne 8. \u0159\u00edjna bylo zablokov\u00e1no p\u0159ibli\u017en\u011b 800 zastaral\u00fdch uzl\u016f, kter\u00e9 fungovaly jako relay (v s\u00edti Tor je celkem v\u00edce ne\u017e 6000 takov\u00fdch uzl\u016f). Blokace byla provedena prost\u0159ednictv\u00edm um\u00edst\u011bn\u00ed na serverech adres\u00e1\u0159\u016f \u010dern\u00e9 listiny probl\u00e9mov\u00fdch uzl\u016f. Vylou\u010den\u00ed z nainstalovan\u00fdch most\u016f (bridge) se o\u010dek\u00e1v\u00e1 pozd\u011bji. <\/p>\n

V n\u00e1sleduj\u00edc\u00ed stabiln\u00ed verzi Tor, kter\u00e1 je napl\u00e1nov\u00e1na na listopad, se objev\u00ed mo\u017enost, kter\u00e1 ve v\u00fdchoz\u00edm nastaven\u00ed odm\u00edtne p\u0159ipojen\u00ed k uzl\u016fm
\nna nich\u017e jsou nasazeny verze Tor, jejich\u017e doba podpory vypr\u0161ela. Takov\u00e1 zm\u011bna umo\u017en\u00ed v budoucnu automaticky vylou\u010dit z s\u00edt\u011b uzly, kter\u00e9 se v\u010das nep\u0159epnuly na aktu\u00e1ln\u00ed software, jakmile bude podpora pro dal\u0161\u00ed v\u011btve ukon\u010dena. Nap\u0159\u00edklad v sou\u010dasnosti se v s\u00edti Tor st\u00e1le vyskytuj\u00ed dokonce uzly s Tor 0.2.4.x, kter\u00e9 byly vyd\u00e1ny v roce 2013, i kdy\u017e doposud pokra\u010duje podpora<\/a><\/noindex> LTS-v\u011btve 0.2.9.<\/p>\n

Provozovatel\u00e9 zastaral\u00fdch syst\u00e9m\u016f byli informov\u00e1ni o pl\u00e1novan\u00e9 blokaci v z\u00e1\u0159\u00ed<\/a><\/noindex> prost\u0159ednictv\u00edm mailing list\u016f a zas\u00edl\u00e1n\u00edm individu\u00e1ln\u00edch upozorn\u011bn\u00ed na kontaktn\u00ed adresy uveden\u00e9 v poli ContactInfo. Po upozorn\u011bn\u00ed se po\u010det neaktualizovan\u00fdch uzl\u016f sn\u00ed\u017eil z 1276 na p\u0159ibli\u017en\u011b 800. Podle p\u0159edb\u011b\u017en\u00e9ho odhadu v sou\u010dasnosti proch\u00e1z\u00ed p\u0159ibli\u017en\u011b 12 % provozu zastaral\u00fdmi uzly, p\u0159i\u010dem\u017e v\u011bt\u0161ina z nich souvis\u00ed s tranzitn\u00edm p\u0159enosem \u2014 pod\u00edl provozu neaktualizovan\u00fdch v\u00fdstupn\u00edch uzl\u016f \u010din\u00ed pouze 1,68 % (62 uzl\u016f). O\u010dek\u00e1v\u00e1 se, \u017ee odstran\u011bn\u00ed neaktualizovan\u00fdch uzl\u016f bude m\u00edt nev\u00fdznamn\u00fd dopad na velikost s\u00edt\u011b a povede k m\u00edrn\u00e9mu poklesu v\u00fdkonu na grafech<\/a><\/noindex>, kter\u00e9 odr\u00e1\u017eej\u00ed stav anonymn\u00ed s\u00edt\u011b. <\/p>\n

P\u0159\u00edtomnost uzl\u016f v s\u00edti se zastaral\u00fdm softwarem negativn\u011b ovliv\u0148uje stabilitu a vytv\u00e1\u0159\u00ed dal\u0161\u00ed rizika naru\u0161en\u00ed bezpe\u010dnosti. Pokud administr\u00e1tor nesleduje aktualizace Tor, pravd\u011bpodobn\u011b laxn\u011b p\u0159istupuje k aktualizaci syst\u00e9mu a dal\u0161\u00edch serverov\u00fdch aplikac\u00ed, co\u017e zvy\u0161uje riziko p\u0159evzet\u00ed kontroly nad uzlem v d\u016fsledku c\u00edlen\u00fdch \u00fatok\u016f. <\/p>\n

Krom\u011b toho p\u0159\u00edtomnost uzl\u016f s ji\u017e nepodporovan\u00fdmi verzemi zt\u011b\u017euje opravu d\u016fle\u017eit\u00fdch chyb, br\u00e1n\u00ed \u0161\u00ed\u0159en\u00ed nov\u00fdch funkc\u00ed protokolu a sni\u017euje efektivitu s\u00edt\u011b. Nap\u0159\u00edklad nezabezpe\u010den\u00e9 uzly, ve kter\u00fdch se projevuje chyba<\/a><\/noindex> v procesoru HSv3, vedou ke zv\u00fd\u0161en\u00ed latence p\u0159i pr\u016fchodu u\u017eivatelsk\u00e9ho provozu a zvy\u0161uj\u00ed celkovou z\u00e1t\u011b\u017e na s\u00ed\u0165 kv\u016fli opakovan\u00fdm po\u017eadavk\u016fm klient\u016f po selh\u00e1n\u00edch p\u0159i zpracov\u00e1n\u00ed spojen\u00ed HSv3.<\/p>\n

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

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

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\u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043d\u044b\u0445 \u0443\u0437\u043b\u043e\u0432. \u0418\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 \u0438\u0437 \u0441\u0435\u0442\u0438 \u043d\u0435\u043e\u0431\u043d\u043e\u0432\u043b\u0451\u043d\u043d\u044b\u0445 \u043c\u043e\u0441\u0442\u043e\u0432\u044b\u0445 \u0443\u0437\u043b\u043e\u0432 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-38794","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47V Tor bylo odpojeno 800 z 6000 uzl\u016f kv\u016fli pou\u017eit\u00ed 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