{"id":34775,"date":"2019-10-31T22:00:18","date_gmt":"2019-10-31T19:00:18","guid":{"rendered":"https:\/\/prohoster.info\/blog\/eksperiment-kak-zamaskirovat-ispolzovanie-tor-dlya-obhoda-blokirovok\/"},"modified":"2019-10-31T22:00:18","modified_gmt":"2019-10-31T19:00:18","slug":"eksperiment-kak-zamaskirovat-ispolzovanie-tor-dlya-obhoda-blokirovok","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/eksperiment-kak-zamaskirovat-ispolzovanie-tor-dlya-obhoda-blokirovok","title":{"rendered":"Eksperimenti: Si t\u00eb maskoni p\u00ebrdorimin e Tor p\u00ebr t\u00eb anashkaluar bllokimet","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/454002\/\"><img decoding=\"async\" alt=\"Eksperimenti: Si t\u00eb maskoni p\u00ebrdorimin e Tor p\u00ebr t\u00eb anashkaluar bllokimet\" src=\"\/wp-content\/uploads\/2019\/05\/35921a936c3b9237cb346e52899dfdc8.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p>Censura n\u00eb internet po b\u00ebhet nj\u00eb problem gjithnj\u00eb e m\u00eb i r\u00ebnd\u00ebsish\u00ebm n\u00eb t\u00eb gjith\u00eb bot\u00ebn. Kjo ka \u00e7uar n\u00eb nj\u00eb rritje t\u00eb \"gar\u00ebs s\u00eb armatosjes\" \u2013 autoritetet shtet\u00ebrore dhe korporatat private n\u00eb vende t\u00eb ndryshme p\u00ebrpiqen t\u00eb bllokojn\u00eb p\u00ebrmbajtje t\u00eb ndryshme dhe luftojn\u00eb me mjetet p\u00ebr t\u00eb anashkaluar k\u00ebto kufizime, nd\u00ebrsa zhvilluesit dhe hulumtuesit p\u00ebrpiqen t\u00eb krijojn\u00eb mjete efektive p\u00ebr t\u00eb luftuar censur\u00ebn. <\/p>\n<p>Shkenc\u00ebtar\u00ebt nga Universitetet Carnegie Mellon, Universiteti i Stanfordit dhe SRI International kan\u00eb kryer <noindex><a rel=\"nofollow\" href=\"https:\/\/www.frankwang.org\/files\/papers\/ccs2012.pdf\">eksperiment<\/a><\/noindex>, gjat\u00eb s\u00eb cil\u00ebs zhvilluan nj\u00eb sh\u00ebrbim t\u00eb ve\u00e7ant\u00eb p\u00ebr t\u00eb maskuar p\u00ebrdorimin e Tor \u2013 nj\u00eb nga mjetet m\u00eb t\u00eb njohura p\u00ebr anashkalimin e bllokimeve. Ne ju paraqesim nj\u00eb tregim rreth pun\u00ebs s\u00eb kryer nga hulumtuesit.<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h2>Tor kund\u00ebr bllokimeve<\/h2>\n<p>\nTor siguron anonimatin e p\u00ebrdoruesve p\u00ebrmes p\u00ebrdorimit t\u00eb relleve speciale \u2013 q\u00eb do t\u00eb thot\u00eb server\u00eb nd\u00ebrmjet\u00ebs mes p\u00ebrdoruesit dhe faqes q\u00eb ai k\u00ebrkon. Zakonisht, midis p\u00ebrdoruesit dhe faqes vendosen disa relle, secili prej s\u00eb cil\u00ebve mund t\u00eb dekriptoj\u00eb vet\u00ebm nj\u00eb sasi t\u00eb vog\u00ebl t\u00eb dh\u00ebnash n\u00eb paket\u00ebn e d\u00ebrguar \u2013 mjaftuesh\u00ebm p\u00ebr t\u00eb ditur pik\u00ebn tjet\u00ebr n\u00eb zinxhir dhe p\u00ebr ta d\u00ebrguar atje. N\u00eb p\u00ebrfundim, madje edhe n\u00ebse n\u00eb zinxhirin e relleve shtohen relle t\u00eb kontrolluara nga keqb\u00ebr\u00ebsit ose cenzor\u00ebt, ata nuk do t\u00eb mund t\u00eb zbulojn\u00eb as adresat dhe as vendin e destinacionit t\u00eb trafikut. <\/p>\n<p>Si nj\u00eb mjet p\u00ebr t\u00eb luftuar censur\u00ebn, Tor funksionon efektivisht, megjithat\u00eb cenzor\u00ebt ende kan\u00eb aft\u00ebsin\u00eb ta bllokojn\u00eb at\u00eb plot\u00ebsisht. Irani dhe Kina kan\u00eb realizuar fushata t\u00eb suksesshme p\u00ebr bllokimin e tij. Ata kan\u00eb arritur t\u00eb identifikojn\u00eb trafikun e Tor-it p\u00ebrmes skanimit t\u00eb TLS handshakes dhe karakteristikave t\u00eb tjera dalluese t\u00eb Tor-it. <\/p>\n<p>M\u00eb von\u00eb, zhvilluesit arrit\u00ebn t\u00eb p\u00ebrshtatin sistemin p\u00ebr t\u00eb anashkaluar bllokimet. Censori iu p\u00ebrgjigj bllokimeve t\u00eb lidhjeve HTTPS me shum\u00eb faqe, duke p\u00ebrfshir\u00eb Tor. Zhvilluesit e projektit krijuan programin obfsproxy, i cili kripton p\u00ebr m\u00eb tep\u00ebr trafikun. Ky gar\u00eb vazhdon vazhdimisht.<\/p>\n<h2>T\u00eb dh\u00ebnat fillestare t\u00eb eksperimentit<\/h2>\n<p>\nK\u00ebrkuesit vendos\u00ebn t\u00eb zhvillojn\u00eb nj\u00eb mjet q\u00eb do t\u00eb lejonte t\u00eb maskohej p\u00ebrdorimi i Tor, p\u00ebr ta b\u00ebr\u00eb at\u00eb t\u00eb mundsh\u00ebm edhe n\u00eb rajone ku sistemi \u00ebsht\u00eb plot\u00ebsisht i bllokuar. <\/p>\n<ul>\n<li>Si supozime fillestare, shkenc\u00ebtar\u00ebt parashtruan k\u00ebto:<\/li>\n<li>Censori kontrollon nj\u00eb segment t\u00eb izoluar t\u00eb brendsh\u00ebm t\u00eb rrjetit, q\u00eb lidhet me internetin e jasht\u00ebm t\u00eb pa cenzuruar.<\/li>\n<li>Autoritetet q\u00eb merren me bllokimin kontrollojn\u00eb t\u00ebr\u00eb infrastruktur\u00ebn e rrjetit brenda segmentit t\u00eb censuruar, por jo softuerin n\u00eb kompjuter\u00ebt e p\u00ebrdoruesve p\u00ebrfundimtar\u00eb. <\/li>\n<li>Censori p\u00ebrpiqet t\u00eb parandaloj\u00eb aksesin e p\u00ebrdoruesve n\u00eb materiale q\u00eb ai i sheh si t\u00eb pad\u00ebshiruara, duke supozuar se t\u00eb gjitha k\u00ebto materiale ndodhen n\u00eb server\u00eb jasht\u00eb segmentit t\u00eb kontrolluar t\u00eb rrjetit. <\/li>\n<li>Ruter\u00ebt n\u00eb periferin\u00eb e k\u00ebtij segmenti analizojn\u00eb t\u00eb dh\u00ebnat e paenkriptuara t\u00eb t\u00eb gjitha pakove p\u00ebr t\u00eb bllokuar p\u00ebrmbajtjen e pad\u00ebshiruar dhe p\u00ebr t\u00eb parandaluar dep\u00ebrtimin e paketave p\u00ebrkat\u00ebse brenda perimetrit.<\/li>\n<li>T\u00eb gjitha Tor-relator\u00ebt jan\u00eb t\u00eb vendosur jasht\u00eb perimetrit. <\/li>\n<\/ul>\n<p><\/p>\n<h2>Si funksionon<\/h2>\n<p>\nP\u00ebr t\u00eb maskuar p\u00ebrdorimin e Tor, studiuesit krijuan mjetin StegoTorus. Q\u00ebllimi kryesor \u00ebsht\u00eb t\u00eb p\u00ebrmir\u00ebsoj\u00eb aft\u00ebsit\u00eb e Tor p\u00ebr t\u00eb rezistuar ndaj analiz\u00ebs automatizuar t\u00eb protokollit. Ky mjet ndodhet midis klientit dhe relatorit t\u00eb par\u00eb n\u00eb zinxhir, p\u00ebrdor nj\u00eb protokoll encryption t\u00eb vetin dhe module steganografie p\u00ebr t\u00eb v\u00ebshtir\u00ebsuar identifikimin e trafikut Tor.<\/p>\n<p>N\u00eb hapin e par\u00eb, fillon puna e modulit t\u00eb quajtur chopper \u2013 ai transformon trafikun n\u00eb nj\u00eb s\u00ebr\u00eb blloqesh me gjat\u00ebsi t\u00eb ndryshme, t\u00eb cilat d\u00ebrgohen m\u00eb tej jasht\u00eb rendit. <\/p>\n<p><img decoding=\"async\" alt=\"Eksperimenti: Si t\u00eb maskoni p\u00ebrdorimin e Tor p\u00ebr t\u00eb anashkaluar bllokimet\" src=\"\/wp-content\/uploads\/2019\/05\/f229ce95f4ed0513d091a43d6d868850.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nT\u00eb dh\u00ebnat kodohen duke p\u00ebrdorur AES n\u00eb modalitetin GCM. Krye i bllokut p\u00ebrmban nj\u00eb num\u00ebr prej 32-bit\u00ebsh t\u00eb sekuenc\u00ebs, dy fushat e gjat\u00eb (d dhe p) \u2013 ato tregojn\u00eb sasin\u00eb e t\u00eb dh\u00ebnave, nj\u00eb fush\u00eb speciale F dhe nj\u00eb fush\u00eb kontrolli prej 56-bit\u00ebsh, vlera e s\u00eb cil\u00ebs duhet t\u00eb jet\u00eb zero. Gjat\u00ebsia minimale e bllokut \u00ebsht\u00eb 32 byte, nd\u00ebrsa maksimumi 217+32 byte. Gjat\u00ebsia kontrollohet nga modulat e steganografis\u00eb. <\/p>\n<p>Kur krijohet nj\u00eb lidhje, disa bajta t\u00eb par\u00eb t\u00eb informacionit jan\u00eb nj\u00eb mesazh handshake, me t\u00eb cilin serveri kupton n\u00ebse ka t\u00eb b\u00ebj\u00eb me nj\u00eb lidhje ekzistuese apo t\u00eb re. N\u00ebse lidhja i p\u00ebrket nj\u00eb lidhjeje t\u00eb re, serveri p\u00ebrgjigjet me nj\u00eb handshake, dhe secili nga pjes\u00ebmarr\u00ebsit e komunikimit nxjerr \u00e7el\u00ebsat e seanc\u00ebs prej tij. P\u00ebrve\u00e7 k\u00ebsaj, sistemi ka implementuar nj\u00eb mekaniz\u00ebm rikonfigurimi (rekeying) \u2013 ai \u00ebsht\u00eb i ngjash\u00ebm me ndarjen e \u00e7el\u00ebsave t\u00eb seanc\u00ebs, por n\u00eb vend t\u00eb mesazheve handshake p\u00ebrdoren blloqe. Ky mekaniz\u00ebm ndryshon numrin e sekuenc\u00ebs, por nuk prek ID-n\u00eb e lidhjes. <\/p>\n<p>Pasi t\u00eb dy pjes\u00ebmarr\u00ebsit n\u00eb shk\u00ebmbim t\u00eb t\u00eb dh\u00ebnave kan\u00eb d\u00ebrguar dhe marr\u00eb blokun fin, lidhja mbyllet. P\u00ebr t\u00eb mbrojtur nga sulmet replay ose vonesat n\u00eb dor\u00ebzimin e blloqeve, t\u00eb dy pjes\u00ebmarr\u00ebsit duhet t\u00eb mbajn\u00eb mend ID-n\u00eb p\u00ebr nj\u00eb periudh\u00eb kohore pas mbylljes. <\/p>\n<p>Moduli i integruar i steganografis\u00eb fsheh trafikun Tor brenda protokollit p2p \u2013 n\u00eb ngjashm\u00ebri me funksionimin e Skype gjat\u00eb komunikimeve VoIP t\u00eb sigurta. Moduli i steganografis\u00eb HTTP simulon trafikun HTTP t\u00eb paencryptuar. Sistemi mimikon nj\u00eb p\u00ebrdorues real me nj\u00eb shfletues t\u00eb zakonsh\u00ebm. <\/p>\n<h2>Q\u00ebndrueshm\u00ebria ndaj sulmeve<\/h2>\n<p>\nP\u00ebr t\u00eb kontrolluar n\u00ebse metoda e propozuar rrit efikasitetin e pun\u00ebs s\u00eb Tor, k\u00ebrkuesit zhvilluan sulme t\u00eb dy llojeve. <\/p>\n<p>E para nga k\u00ebto p\u00ebrfshin identifikimin e rrjedhave Tor nga rrjedhat TCP n\u00eb baz\u00eb t\u00eb karakteristikave themelore t\u00eb protokollit Tor \u2013 ky ishte gjithashtu metoda q\u00eb u p\u00ebrdor p\u00ebr t\u00eb bllokuar sistemin e qeveris\u00eb kineze. Sulmi i dyt\u00eb p\u00ebrfshin studimin e rrjedhave Tor tashm\u00eb t\u00eb njohura p\u00ebr t\u00eb nxjerr\u00eb informacione mbi cilat faqe vizitoi p\u00ebrdoruesi. <\/p>\n<p>K\u00ebrkuesit konfirmuan efikasitetin e sulmit t\u00eb par\u00eb ndaj \"Tor-it t\u00eb zakonsh\u00ebm\" \u2013 p\u00ebr k\u00ebt\u00eb ata mbledh\u00ebn gjurm\u00ebt e vizitave n\u00eb faqet nga lista e 10 m\u00eb t\u00eb bukura n\u00eb Alexa.com nj\u00ebzet her\u00eb p\u00ebrmes Tor-it t\u00eb zakonsh\u00ebm, obfsproxy dhe StegoTorus me modul t\u00eb HTTP-steganografis\u00eb. Si referenc\u00eb p\u00ebr krahasim u p\u00ebrdor dataset-i CAIDA me t\u00eb dh\u00ebna p\u00ebr portin 80 \u2013 pothuajse me siguri t\u00eb gjitha k\u00ebto jan\u00eb lidhje HTTP.<\/p>\n<p>Eksperimenti tregoi se llogaritja e Tor-it t\u00eb zakonsh\u00ebm \u00ebsht\u00eb mjaft e leht\u00eb. Protokolli Tor \u00ebsht\u00eb shum\u00eb specifik dhe ka nj\u00eb s\u00ebr\u00eb karakteristikash q\u00eb \u00ebsht\u00eb leht\u00eb t\u00eb llogariten \u2013 p\u00ebr shembull, gjat\u00eb p\u00ebrdorimit t\u00eb tij, lidhjet TCP zgjasin 20-30 sekonda. Instrumenti Obfsproxy gjithashtu pothuajse nuk e fsheh fare k\u00ebto aspekte t\u00eb dukshme. StegoTorus, nga ana tjet\u00ebr, gjeneron trafik q\u00eb \u00ebsht\u00eb shum\u00eb m\u00eb af\u00ebr referenc\u00ebs CAIDA.<\/p>\n<p><img decoding=\"async\" alt=\"Eksperimenti: Si t\u00eb maskoni p\u00ebrdorimin e Tor p\u00ebr t\u00eb anashkaluar bllokimet\" src=\"\/wp-content\/uploads\/2019\/05\/bc75182d731dc854d96d8041d3a2d494.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nN\u00eb rastin e sulmit p\u00ebr llogaritjen e faqes s\u00eb vizituar, k\u00ebrkuesit krahasuan probabilitetin e zbardhjes s\u00eb t\u00eb dh\u00ebnave n\u00eb rastin e \"Tor-it t\u00eb zakonsh\u00ebm\" dhe zgjidhjes s\u00eb tyre StegoTorus. P\u00ebr vler\u00ebsim u p\u00ebrdor shkalla <noindex><a rel=\"nofollow\" href=\"http:\/\/fastml.com\/what-you-wanted-to-know-about-auc\/\">AUC<\/a><\/noindex> (\u00cbsht\u00eb Zona N\u00ebn Kurv\u00ebn). Sipas rezultateve t\u00eb analiz\u00ebs, rezulton se n\u00eb rastin e Tor-it t\u00eb zakonsh\u00ebm pa mbrojtje shtes\u00eb, probabiliteti i zbardhjes s\u00eb t\u00eb dh\u00ebnave mbi faqet e vizituara \u00ebsht\u00eb ndjesh\u00ebm m\u00eb i lart\u00eb.<\/p>\n<p><img decoding=\"async\" alt=\"Eksperimenti: Si t\u00eb maskoni p\u00ebrdorimin e Tor p\u00ebr t\u00eb anashkaluar bllokimet\" src=\"\/wp-content\/uploads\/2019\/05\/74dc8cc047ef7a38d7ae6947e23e8aa9.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>P\u00ebrfundimi<\/h2>\n<p>\nHistoria e p\u00ebrplasjes midis autoriteteve t\u00eb vendeve q\u00eb vendosin censur\u00eb n\u00eb internet dhe zhvilluesve t\u00eb sistemeve p\u00ebr t\u00eb kap\u00ebrcyer bllokimet tregon se vet\u00ebm masat e plota mbrojt\u00ebse mund t\u00eb jen\u00eb efikase. P\u00ebrdorimi i nj\u00eb instrumenti t\u00eb vet\u00ebm nuk mund t\u00eb garantoj\u00eb aksesin n\u00eb informacionin e nevojsh\u00ebm dhe q\u00eb informacioni mbi kap\u00ebrcimin e bllokimit nuk do t\u00eb b\u00ebhet i njohur censors. <\/p>\n<p>Prandaj, gjat\u00eb p\u00ebrdorimit t\u00eb \u00e7do instrumenti p\u00ebr sigurin\u00eb dhe qasjen n\u00eb p\u00ebrmbajtje, \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb mos harrohet se nuk ka zgjidhje ideale, dhe n\u00ebse \u00ebsht\u00eb e mundur, t\u00eb kombinohen metoda t\u00eb ndryshme p\u00ebr t\u00eb arritur efikasitetin m\u00eb t\u00eb madh.<\/p>\n<h2>Lidhje dhe materiale t\u00eb dobishme nga <noindex><a rel=\"nofollow\" href=\"https:\/\/infatica.io\">Infatica<\/a><\/noindex>:<\/h2>\n<p><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/453168\/\">Studim: krijimi i nj\u00eb sh\u00ebrbimi proxy rezistent ndaj bllokimeve p\u00ebrmes teoris\u00eb s\u00eb loj\u00ebrave<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/452438\/\">Historia e luft\u00ebs kund\u00ebr censur\u00ebs: si funksionon metoda flash proxy e zhvilluar nga shkenc\u00ebtar\u00ebt e MIT dhe Stanfordit<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/451832\/\">Si t\u00eb kuptoni kur proxy genjejn\u00eb: verifikimi i vendndodhjeve fizike t\u00eb proxy-ve rrjetor\u00eb p\u00ebrmes nj\u00eb algoritmi aktiv t\u00eb geolokacionit<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/452334\/\">Si t\u00eb maskoheni n\u00eb internet: krahasimi i server\u00ebve dhe proxy-ve rezident\u00eb<\/a><\/noindex><\/li>\n<\/ul>\n<p>Burimi: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/infatica\/blog\/454002\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0426\u0435\u043d\u0437\u0443\u0440\u0430 \u0432 \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0435 \u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u0441\u044f \u0432\u0441\u0435 \u0431\u043e\u043b\u0435\u0435 \u0432\u0430\u0436\u043d\u043e\u0439 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043e\u0439 \u0432\u043e \u0432\u0441\u0435\u043c \u043c\u0438\u0440\u0435. \u042d\u0442\u043e \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u044e \u00ab\u0433\u043e\u043d\u043a\u0438 \u0432\u043e\u043e\u0440\u0443\u0436\u0435\u043d\u0438\u0439\u00bb \u2013 \u0433\u043e\u0441\u0443\u0434\u0430\u0440\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0435 \u043e\u0440\u0433\u0430\u043d\u044b \u0438 \u0447\u0430\u0441\u0442\u043d\u044b\u0435 \u043a\u043e\u0440\u043f\u043e\u0440\u0430\u0446\u0438\u0438 \u0432 \u0440\u0430\u0437\u043d\u044b\u0445 \u0441\u0442\u0440\u0430\u043d\u0430\u0445 \u0441\u0442\u0440\u0435\u043c\u044f\u0442\u0441\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0435\u043d\u0442 \u0438 \u0431\u043e\u0440\u044e\u0442\u0441\u044f \u0441\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430\u043c\u0438 \u043e\u0431\u0445\u043e\u0434\u0430 \u0442\u0430\u043a\u0438\u0445 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0439, \u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0438 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0441\u0442\u0440\u0435\u043c\u044f\u0442\u0441\u044f \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u044b\u0435 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Tor p\u00ebr t\u00eb kaluar bllokadat | ProHoster","description":"Censura n\u00eb internet po b\u00ebhet nj\u00eb problem gjithnj\u00eb e m\u00eb i r\u00ebnd\u00ebsish\u00ebm n\u00eb t\u00eb gjith\u00eb bot\u00ebn. Kjo \u00e7on n\u00eb nj\u00eb intensifikim t\u00eb 'gar\u00ebs s\u00eb armatosjes' \u2013 autoritetet shtet\u00ebrore dhe korporatat private n\u00eb vende t\u00eb ndryshme p\u00ebrpiqen t\u00eb bllokojn\u00eb p\u00ebrmbajtje t\u00eb ndryshme dhe luftojn\u00eb me m\u00ebnyrat p\u00ebr t\u00eb kaluar k\u00ebto kufizime, nd\u00ebrsa zhvilluesit dhe studiuesit p\u00ebrpiqen t\u00eb krijojn\u00eb vegla efikase n\u00eb luft\u00ebn kund\u00ebr censur\u00ebs. 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