{"id":35704,"date":"2019-10-31T22:05:50","date_gmt":"2019-10-31T19:05:50","guid":{"rendered":"https:\/\/prohoster.info\/blog\/proekt-salmon-kak-effektivno-protivostoyat-internet-tsenzure-s-pomoshhyu-proksi-s-urovnyami-doveriya-polzovatelyam\/"},"modified":"2019-10-31T22:05:50","modified_gmt":"2019-10-31T19:05:50","slug":"proekt-salmon-kak-effektivno-protivostoyat-internet-tsenzure-s-pomoshhyu-proksi-s-urovnyami-doveriya-polzovatelyam","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/proekt-salmon-kak-effektivno-protivostoyat-internet-tsenzure-s-pomoshhyu-proksi-s-urovnyami-doveriya-polzovatelyam","title":{"rendered":"Projekt Salmon: kuidas t\u00f5husalt vastata Interneti-tsensuurile usaldustase kasutajatele p\u00f5hineva proxy abil","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/457442\/\"><img decoding=\"async\" alt=\"Projekt Salmon: kuidas t\u00f5husalt vastata Interneti-tsensuurile usaldustase kasutajatele p\u00f5hineva proxy abil\" src=\"\/wp-content\/uploads\/2019\/06\/8bf307f2455fee6499c03112df839b68.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p>Paljude riikide valitsused piiravad kodanike juurdep\u00e4\u00e4su teabele ja teenustele internetis. Vahepealne v\u00f5itlus sellise tsensuuri vastu on oluline ja keeruline \u00fclesanne. Tavalised lahendused ei suuda tavaliselt k\u00f5rge usaldusv\u00e4\u00e4rsusega v\u00f5i pikaajalise efektiivsusega hiilata. Kompleksemad blokeeringute \u00fcletamise meetodid toovad esile miinuseid kasutusmugavuse, madala j\u00f5udluse v\u00f5i ei suuda tagada interneti kasutamise kvaliteeti soovitud tasemel.<\/p>\n<p>Ameerika teadlaste r\u00fchm Illinois' \u00fclikoolist <noindex><a rel=\"nofollow\" href=\"https:\/\/censorbib.nymity.ch\/pdf\/Douglas2016a.pdf\">arendas<\/a><\/noindex> uus meetod blokeeringute \u00fcletamiseks, mis p\u00f5hineb proksitehnoloogia kasutamisel ja kasutajate segmenteerimisel usaldusv\u00e4\u00e4rsuse taseme j\u00e4rgi, et t\u00f5husalt tuvastada agente, kes t\u00f6\u00f6tavad tsensuuri jaoks. Esitleme teile selle t\u00f6\u00f6 peamised teesid.<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h2>L\u00e4henemise kirjeldus<\/h2>\n<p>\nTeadlased on loonud t\u00f6\u00f6riista Salmon \u2013 see on vabatahtlikest juhtimisel tegutsev proksiserverite s\u00fcsteem, mis asub riikides, kus interneti kasutamise piiranguid pole. Nende serverite kaitsmiseks tsensuuri blokeeringute eest kasutab s\u00fcsteem spetsiaalset algoritmi, et m\u00e4\u00e4rata kasutajatele usaldusv\u00e4\u00e4rsuse tase. <\/p>\n<p>Meetod eeldab v\u00f5imalike tsensorite agentide paljastamist, kes esitavad end tavakasutajatena, et teada saada proksiserveri IP-aadress ja blokeerida see. Lisaks sellele toimub vastupanu <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%90%D1%82%D0%B0%D0%BA%D0%B0_%D0%A1%D0%B8%D0%B2%D0%B8%D0%BB%D0%BB%D1%8B\">Sivilla r\u00fcnnakutele<\/a><\/noindex> n\u00f5udmisega esitada s\u00fcsteemi registreerimisel link kehtivale sotsiaalmeedia kontole v\u00f5i saada soovitus k\u00f5rge usaldusv\u00e4\u00e4rsuse tasemega kasutajalt.<\/p>\n<h2>Kuidas see toimib<\/h2>\n<p>\nEeldatakse, et tsensor on valitsuse kontrolli all olev organ, millel on v\u00f5imalus v\u00f5tta kontrolli alla iga marsruuter riigis. Samuti eeldatakse, et tsensori \u00fclesanne on blokeerida juurdep\u00e4\u00e4s teatud ressurssidele, mitte tuvastada kasutajaid edasiste arreteerimiste jaoks. S\u00fcsteem ei saa selliseid arenguid kuidagi ennetada \u2013 riigil on palju v\u00f5imalusi teada saada, milliseid teenuseid kodanikud kasutavad. \u00dcks neist on honeypot-serverite kasutamine kommunikatsioonide p\u00fc\u00fcdmiseks.<\/p>\n<p>Samuti eeldatakse, et riigil on m\u00e4rkimisv\u00e4\u00e4rsed ressursid, sealhulgas inimressursid. Tsensor v\u00f5ib lahendada \u00fclesandeid, mis n\u00f5uavad sadu ja tuhandeid t\u00e4isajaga t\u00f6\u00f6tajaid. <\/p>\n<p>Veel m\u00f5ned p\u00f5hiteesid:<\/p>\n<ul>\n<li>S\u00fcsteemi \u00fclesanne on anda juurdep\u00e4\u00e4s blokeeringutest m\u00f6\u00f6da minemiseks (st pakkuda proksiserveri IP-aadresse) k\u00f5igile kasutajatele, kes elavad internetitsensuuri all olevates piirkondades. <\/li>\n<li>Tsenseerivate internetiorganite ja -asutuste agendid\/t\u00f6\u00f6tajad v\u00f5ivad p\u00fc\u00fcda s\u00fcsteemi sisse logida tavaliste kasutajatena. <\/li>\n<li>Tsensuur v\u00f5ib blokeerida mis tahes puhverserveri, mille aadress temale teada saab. <\/li>\n<li>S\u00fcsteemi Salmon korraldajad m\u00f5istavad sellisel juhul, et tsensuur on mingil moel serveri aadressi teada saanud.<\/li>\n<\/ul>\n<p>\nK\u00f5ik see viib meid kolme v\u00f5tmeelemendi kirjelduseni, mis aitavad blokeeringutest m\u00f6\u00f6da hiilida. <\/p>\n<ol>\n<li>S\u00fcsteem arvutab t\u00f5en\u00e4osuse, et kasutaja on tsensuuriorganisatsioonide agent. Kasutajad, keda peetakse t\u00f5en\u00e4oliselt sellisteks agentideks, blokeeritakse. <\/li>\n<li>Igal kasutajal on usaldusv\u00e4\u00e4rsuse tase, mille tuleb teenida. K\u00f5rgeima j\u00f5udlusega puhverserverid on reserveeritud kasutajatele, kelle usaldusv\u00e4\u00e4rsuse tase on maksimaalne. See eraldab ka usaldusv\u00e4\u00e4rsed, ajaga t\u00f5estatud kasutajad algajatest, sest just nende seas on k\u00f5ige t\u00f5en\u00e4olisemalt tsensuuride agendid. <\/li>\n<li>Kasutajad, kelle usaldusv\u00e4\u00e4rsuse tase on k\u00f5rge, saavad kutsuda s\u00fcsteemi uusi kasutajaid. L\u00f5puks tekib usaldusv\u00e4\u00e4rsete kasutajate sotsiaalne graaf.<\/li>\n<\/ol>\n<p>\nK\u00f5ik on loogiline: tsensor peab tavaliselt blokeerima proksiserveri kohe, ta ei oota kaua aega, et proovida oma agentide kontosid s\u00fcsteemis 'v\u00f5imendada'. Samuti on selge, et uued kasutajad v\u00f5ivad algselt saada erineva usaldusv\u00e4\u00e4rsuse taseme \u2013 n\u00e4iteks on t\u00f5en\u00e4olisem, et projekti looja s\u00f5brad ja pereliikmed ei tee koost\u00f6\u00f6d tsensuuririikidega.<\/p>\n<h2>Usaldusv\u00e4\u00e4rsuse tasemed: rakenduse \u00fcksikasjad<\/h2>\n<p>\nUsaldusv\u00e4\u00e4rsust on mitte ainult kasutajatel, vaid ka proksiserveritel. S\u00fcsteem m\u00e4\u00e4rab kasutajale teatud taseme usaldusv\u00e4\u00e4rsusega serveri. Samuti v\u00f5ib kasutajate usaldusv\u00e4\u00e4rsuse tase nii t\u00f5usta kui ka langeda, serverite puhul kasvab see aga ainult.<\/p>\n<p>Iga kord, kui tsensuurijad blokeerivad serveri, millega konkreetne kasutaja on t\u00f6\u00f6tanud, tema usaldusv\u00e4\u00e4rsuse tase langeb. Usaldusv\u00e4\u00e4rsus suureneb, kui serverit pikka aega ei blokeerita \u2013 iga uue taseme saavmiseks kahekordistub vajalik aeg: tasemelt n tasemele n+1 \u00fcleminekuks on vajalik 2n+1 p\u00e4eva katkematut t\u00f6\u00f6aega. Tee maksimaalse, kuuenda, usaldusv\u00e4\u00e4rsuse tasemeni v\u00f5tab rohkem kui kaks kuud.<\/p>\n<p><img decoding=\"async\" alt=\"Projekt Salmon: kuidas t\u00f5husalt vastata Interneti-tsensuurile usaldustase kasutajatele p\u00f5hineva proxy abil\" src=\"\/wp-content\/uploads\/2019\/06\/cd7b312c0bb011ae0e04cbae0ef3f3e4.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNii kaua ootamine, et v\u00e4lja selgitada k\u00f5ige kvaliteetsemate proxiserverite aadresse, on \u00e4\u00e4rmiselt efektiivne meede tsensuurijate vastu. <\/p>\n<p>Serveri usaldusv\u00e4\u00e4rsuse tase on minimaalne usaldusv\u00e4\u00e4rsuse aste, mis m\u00e4\u00e4ratakse kasutajate p\u00f5hjal. N\u00e4iteks kui uus server s\u00fcsteemis m\u00e4\u00e4ratakse kasutajatele, kelle minimaalne reiting on 2, siis saab ka protokoll sama reitingu. Kui serverit hakkab kasutama inimene, kelle reiting on 3, kuid seal on endiselt ka teise taseme kasutajaid, siis j\u00e4\u00e4b serveri reitinguks 2. Kui aga k\u00f5ik serveri kasutajad t\u00f5stavad oma taset, t\u00f5useb see ka protokollile. Samas ei saa server usaldusv\u00e4\u00e4rsuse taset kaotada; vastupidi, kui see blokeeritakse, saavad kasutajad karistada.<\/p>\n<p>Kasutajad, kellel on k\u00f5rge usaldusv\u00e4\u00e4rsuse tase, saavad kahte t\u00fc\u00fcpi preemiaid. Esiteks ei ole serverid k\u00f5ik \u00fchesugused. On olemas minimaalsetest n\u00f5udmistest l\u00e4htuvad l\u00e4bilaskev\u00f5ime n\u00f5uded (100 Kbit\/s), kuid vabatahtlik serveri omanik v\u00f5ib pakkuda ka rohkem \u2013 ei ole \u00fchtegi \u00fclemist piirangut. Salmoni s\u00fcsteem valib k\u00f5ige t\u00f5husamad serverid maksimaalse reitinguga kasutajatele. <\/p>\n<p>Lisaks on k\u00f5rge usaldusv\u00e4\u00e4rsusega kasutajad paremini kaitstud tsensuuri r\u00fcnnakute eest, kuna tsensor peab ootama kuni kuude kaupa, et v\u00e4lja selgitada proksi aadress. L\u00f5ppkokkuv\u00f5ttes on k\u00f5rge riski kasutajate serverite blokeerimise t\u00f5en\u00e4osus tunduvalt madalam kui madala usaldusv\u00e4\u00e4rsuse kasutajatel.<\/p>\n<p>Et \u00fchendust luua parimate proksidega v\u00f5imalikult paljude usaldusv\u00e4\u00e4rsete kasutajatega, on Salmoni loojad v\u00e4lja t\u00f6\u00f6tanud soovituste s\u00fcsteemi. K\u00f5rge reitinguga (L) kasutajad saavad kutsuda oma s\u00f5pru platvormiga liituma. Kutsutud inimesed saavad reitingu L-1.<\/p>\n<p>Soovituss\u00fcsteem t\u00f6\u00f6tab lainetena. Esimese laine kutsutud kasutajad saavad kutsuda oma s\u00f5pru liituma vaid umbes nelja kuu p\u00e4rast. Teise ja j\u00e4rgnevate laine kasutajad peavad ootama 2 kuud.<\/p>\n<h2>S\u00fcsteemi moodulid <\/h2>\n<p>\nS\u00fcsteem koosneb kolmest komponendist:<\/p>\n<ul>\n<li>Windowsi jaoks m\u00f5eldud Salmoni klient;<\/li>\n<li>serveriprogramm, mille paigaldavad vabatahtlikud (versioonid Windowsile ja Linuxile);<\/li>\n<li>Keskse katalooge server, mis hoiab k\u00f5igi proksi serverite andmebaasi ja haldab IP-aadresse kasutajate seas.<\/li>\n<\/ul>\n<p><img decoding=\"async\" alt=\"Projekt Salmon: kuidas t\u00f5husalt vastata Interneti-tsensuurile usaldustase kasutajatele p\u00f5hineva proxy abil\" src=\"\/wp-content\/uploads\/2019\/06\/b75fa9250df9c7d97e939bd01f8e1f97.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<i>Kliendi rakenduse liidese s\u00fcsteem<\/i><\/p>\n<p>Selleks, et s\u00fcsteemi kasutada, peab inimene looma konto Facebooki kasutajakonto abil.<\/p>\n<h2>Kokkuv\u00f5te <\/h2>\n<p>\nPraegu ei ole Salmone meetod laialdaselt levinud, teadaolevalt on olemas vaid v\u00e4ikesed piloteerimisprojektid kasutajatele Iraanis ja Hiinas. Kuigi see on huvitav projekt, ei taga see t\u00e4ielikult anon\u00fc\u00fcmsust ega kaitse vabatahtlikele, ja isegi loojad tunnistavad, et see on vastuv\u00f5tlik honeypot-teenuste r\u00fcnnakutele. Sellegipoolest tundub taseme usaldusega s\u00fcsteemi rakendamine huvitava eksperimendi olevat, mis v\u00f5ib j\u00e4tkuda. <\/p>\n<p>T\u00e4naseks on k\u00f5ik, ait\u00e4h t\u00e4helepanu eest!<\/p>\n<h2>Kasulikud lingid ja materjalid <noindex><a rel=\"nofollow\" href=\"https:\/\/infatica.io\">Infatica<\/a><\/noindex>:<\/h2>\n<p><\/p>\n<ul>\n<li><noindex>Eksperiment: kas on v\u00f5imalik v\u00e4hendada DoS-r\u00fcnnakute negatiivseid tagaj\u00e4rgi proksiga<\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/453168\/\">Uuring: blokeeringutele vastupidava proxy-teenuse loomine m\u00e4nguteooria p\u00f5hjal<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/452438\/\">Ajalugu tsensuuriga v\u00f5itlemisest: kuidas toimib MIT ja Stanfordi teadlaste loodud flash proxy meetod<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/451832\/\">Kuidas m\u00f5ista, millal proksid valetavad: v\u00f5rguprokside f\u00fc\u00fcsiliste asukohtade verifitseerimine aktiivse geolokatsiooni algoritmiga<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/452334\/\">Kuidas internetis varjata oma kohta: v\u00f5rdleme serverip\u00f5hiseid ja residentse proksi<\/a><\/noindex><\/li>\n<\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/457442\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0430\u0432\u0438\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0430 \u043c\u043d\u043e\u0433\u0438\u0445 \u0441\u0442\u0440\u0430\u043d \u0442\u0430\u043a \u0438\u043b\u0438 \u0438\u043d\u0430\u0447\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u044e\u0442 \u0434\u043e\u0441\u0442\u0443\u043f \u0433\u0440\u0430\u0436\u0434\u0430\u043d \u043a \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u0438 \u0441\u0435\u0440\u0432\u0438\u0441\u0430\u043c \u0432 \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0435. \u0411\u043e\u0440\u044c\u0431\u0430 \u0441 \u043f\u043e\u0434\u043e\u0431\u043d\u043e\u0439 \u0446\u0435\u043d\u0437\u0443\u0440\u043e\u0439 \u2013 \u0432\u0430\u0436\u043d\u0430\u044f \u0438 \u043d\u0435\u043f\u0440\u043e\u0441\u0442\u0430\u044f \u0437\u0430\u0434\u0430\u0447\u0430. \u041e\u0431\u044b\u0447\u043d\u043e \u043f\u0440\u043e\u0441\u0442\u044b\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u043d\u0435 \u043c\u043e\u0433\u0443\u0442 \u043f\u043e\u0445\u0432\u0430\u0441\u0442\u0430\u0442\u044c \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u043d\u0430\u0434\u0435\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u0438\u043b\u0438 \u0434\u043e\u043b\u0433\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u044c\u044e. \u0411\u043e\u043b\u0435\u0435 \u0441\u043b\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0442\u043e\u0434\u044b \u043f\u0440\u0435\u043e\u0434\u043e\u043b\u0435\u043d\u0438\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043e\u043a \u043e\u0431\u043b\u0430\u0434\u0430\u044e\u0442 \u043c\u0438\u043d\u0443\u0441\u0430\u043c\u0438 \u0441 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f \u0443\u0434\u043e\u0431\u0441\u0442\u0432\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f, \u043d\u0438\u0437\u043a\u043e\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c\u044e \u0438\u043b\u0438 \u043d\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0441\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u044c \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e 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