{"id":34402,"date":"2019-10-31T21:58:08","date_gmt":"2019-10-31T18:58:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/osobennosti-nastrojki-dpi\/"},"modified":"2019-10-31T21:58:08","modified_gmt":"2019-10-31T18:58:08","slug":"osobennosti-nastrojki-dpi","status":"publish","type":"post","link":"https:\/\/prohoster.info\/lv\/blog\/news\/osobennosti-nastrojki-dpi","title":{"rendered":"DPI konfigur\u0101cijas iesp\u0113jas","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u0160aj\u0101 rakst\u0101 netiek apskat\u012bta pilna DPI iestat\u012b\u0161ana un saist\u012bt\u0101s t\u0113mas, un teksta zin\u0101tnisk\u0101 v\u0113rt\u012bba ir minim\u0101la. Ta\u010du taj\u0101 tiek aprakst\u012bts vienk\u0101r\u0161\u0101kais veids, k\u0101 apiet DPI, ko daudzas komp\u0101nijas nav \u0146\u0113mu\u0161as v\u0113r\u0101.<\/p>\n<p><img decoding=\"async\" alt=\"DPI konfigur\u0101cijas iesp\u0113jas\" src=\"\/wp-content\/uploads\/2019\/05\/5fbb9d8c80da69f6d0058871953a095f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<i>Br\u012bdin\u0101jums Nr. 1: \u0161is raksts ir p\u0113t\u012bjuma rakstura, un nenor\u0101da nevienam veikt k\u0101das darb\u012bbas vai izmantot to. Ideja balst\u0101s uz person\u012bgu pieredzi, un visi sakrit\u012bb\u0101s ir nejau\u0161as.<\/i><\/p>\n<p><i>Br\u012bdin\u0101jums Nr. 2: rakst\u0101 netiek atkl\u0101ti Atlant\u012bdas nosl\u0113pumi, Sv\u0113t\u0101 Gr\u0101la mekl\u0113jumi un citi Visuma nosl\u0113pumi, viss materi\u0101ls ir br\u012bvi pieejams un, iesp\u0113jams, jau ir vair\u0101kas reizes aprakst\u012bts Habb\u0101. (Es neatradu, b\u016b\u0161u pateic\u012bgs par saiti)<\/i><\/p>\n<p>Lai tie, kas izlas\u012bja br\u012bdin\u0101jumus, s\u0101ktu.<\/p>\n<h3>Kas ir DPI?<\/h3>\n<p>\nDPI jeb Deep Packet Inspection ir tehnolo\u0123ija, kas apkopo statistikas datus, p\u0101rbauda un filtr\u0113 t\u012bkla paketes, analiz\u0113jot ne tikai paketes galvenes, bet ar\u012b pilno saturu uz OSI mode\u013ca otr\u0101 l\u012bme\u0146a un augst\u0101k, kas \u013cauj atkl\u0101t un blo\u0137\u0113t v\u012brusus, filtr\u0113t inform\u0101ciju, kas neatbilst noteiktiem krit\u0113rijiem.<\/p>\n<p>Past\u0101v divi DPI savienojuma veidi, kas tiek aprakst\u012bti <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/users\/valdikss\/\" class=\"user_link\">ValdikSS<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/ValdikSS\/blockcheck\/wiki\/%D0%A2%D0%B8%D0%BF%D1%8B-DPI\">github<\/a><\/noindex>:<\/p>\n<blockquote><p><b>Pas\u012bvais DPI <\/b><\/p>\n<p>DPI, kas piesl\u0113gts pakalpojumu sniedz\u0113ja t\u012bklam paral\u0113li (ne krust\u0101m) vai caur pas\u012bvo optisko dal\u012bt\u0101ju, vai izmantojot izn\u0101kuma trafika atspogu\u013co\u0161anu no lietot\u0101jiem. \u0160\u0101ds piesl\u0113gums nepal\u0113nina pakalpojumu sniedz\u0113ja t\u012bkla \u0101trumu, ja DPI veiktsp\u0113ja ir nepietiekama, t\u0101p\u0113c to izmanto lielie pakalpojumu sniedz\u0113ji. DPI ar \u0161\u0101da veida piesl\u0113gumu tehniski var tikai konstat\u0113t m\u0113\u0123in\u0101jumu piepras\u012bt aizliegtu saturu, bet neaptur\u0113t to. Lai apietu \u0161o ierobe\u017eojumu un blo\u0137\u0113tu piek\u013cuvi aizliegtajai vietnei, DPI nos\u016bta lietot\u0101jam, kur\u0161 pieprasa blo\u0137\u0113to URL, \u012bpa\u0161i sast\u0101d\u012btu HTTP paketi ar p\u0101radres\u0101ciju uz pakalpojumu sniedz\u0113ja blo\u0137\u0113\u0161anas lapu, it k\u0101 t\u0101du atbildi b\u016btu nos\u016bt\u012bjis pats piepras\u012bt\u0101 resurss (tiek viltojis IP adresi un TCP sec\u012bbu). T\u0101 k\u0101 DPI fiziski atrodas tuv\u0101k lietot\u0101jam nek\u0101 piepras\u012bt\u0101 vietne, viltojums atbilde sasniedz lietot\u0101ja ier\u012bci \u0101tr\u0101k nek\u0101 \u012bst\u0101 atbilde no vietnes.<\/p>\n<p><b>Akt\u012bvais DPI<\/b><\/p>\n<p>Akt\u012bvais DPI \u2014 DPI, kas piesl\u0113gts pakalpojumu sniedz\u0113ja t\u012bklam ierast\u0101 veid\u0101, l\u012bdz\u012bgi k\u0101 jebkura cita t\u012bkla ier\u012bce. Pakalpojumu sniedz\u0113js konfigur\u0113 mar\u0161rut\u0113\u0161anu t\u0101, lai DPI sa\u0146emtu trafiku no lietot\u0101jiem uz blo\u0137\u0113tajiem IP adres\u0113m vai dom\u0113niem, un DPI jau pie\u0146em l\u0113mumu par trafika at\u013cau\u0161anu vai blo\u0137\u0113\u0161anu. Akt\u012bvais DPI var p\u0101rbaud\u012bt gan izejo\u0161o, gan ien\u0101ko\u0161o trafiku, tom\u0113r, ja pakalpojumu sniedz\u0113js piem\u0113ro DPI tikai, lai blo\u0137\u0113tu vietnes no re\u0123istra, visbie\u017e\u0101k to konfigur\u0113, lai p\u0101rbaud\u012btu tikai izejo\u0161o trafiku.<\/p><\/blockquote>\n<p>\nSavienojuma veids ietekm\u0113 ne tikai trafika blo\u0137\u0113\u0161anas efektivit\u0101ti, bet ar\u012b slodzi uz DPI, t\u0101p\u0113c past\u0101v iesp\u0113ja nep\u0101rbaud\u012bt visu trafiku, bet tikai noteiktu:<\/p>\n<blockquote><p><b>\u201eParastais\u201d DPI<\/b><\/p>\n<p>Ar \u201eparasto\u201d DPI saprotams t\u0101ds DPI, kas filtr\u0113 noteikta veida trafiku tikai uz visizplat\u012bt\u0101kajiem portiem \u0161im tipam. Piem\u0113ram, \u201eparastais\u201d DPI nosaka un blo\u0137\u0113 aizliegtos HTTP trafikus tikai uz porta 80, HTTPS trafiku uz porta 443. \u0160is DPI veids nesekos aizliegtajam saturam, ja j\u016bs nos\u016bt\u012bsiet piepras\u012bjumu ar blo\u0137\u0113tu URL uz neblo\u0137\u0113tu IP vai nestandarta portu.<\/p>\n<p><b>\u201ePilnais\u201d DPI<\/b><\/p>\n<p>At\u0161\u0137ir\u012bb\u0101 no \u201eparast\u0101\u201d DPI, \u0161is tipa DPI klasific\u0113 trafiku neatkar\u012bgi no IP adreses un porta. T\u0101d\u0113j\u0101di blo\u0137\u0113t\u0101s vietnes netiks atv\u0113rtas, pat ja j\u016bs izmantojat starpniekserveri piln\u012bgi cit\u0101 port\u0101 un neblo\u0137\u0113t\u0101 IP adres\u0113.<\/p><\/blockquote>\n<p><\/p>\n<h3>DPI izmanto\u0161ana<\/h3>\n<p>\nLai nesamazin\u0101tu datu p\u0101rraides \u0101trumu, j\u0101izmanto \u201eParastais\u201d pas\u012bvais DPI, kas \u013cauj efekt\u012bvi blo\u0137\u0113t jebk\u0101dus resursus, p\u0113c noklus\u0113juma konfigur\u0101cija izskat\u0101s \u0161\u0101di:<\/p>\n<ul>\n<li>HTTP filtr\u0113t tikai uz 80 porta<\/li>\n<li>HTTPS tikai uz 443 porta<\/li>\n<li>BitTorrent tikai uz 6881-6889 portiem<\/li>\n<\/ul>\n<p>\nBet probl\u0113mas s\u0101kas, ja <b>resurss izmantos citu portu, lai nezaud\u0113tu lietot\u0101jus<\/b>, tad b\u016bs j\u0101p\u0101rbauda katrs pakets, piem\u0113ram, var min\u0113t:<\/p>\n<ul>\n<li>HTTP darbojas uz 80 un 8080 porta<\/li>\n<li>HTTPS uz 443 un 8443 porta<\/li>\n<li>BitTorrent uz jebkura cita diapazona<\/li>\n<\/ul>\n<p>\nT\u0101p\u0113c b\u016bs j\u0101p\u0101riet uz \u201eAkt\u012bvo\u201d DPI vai j\u0101izmanto blo\u0137\u0113\u0161ana, izmantojot papildu DNS serveri.<\/p>\n<h3>Blo\u0137\u0113\u0161ana ar DNS<\/h3>\n<p>\nViens no veidiem, k\u0101 blo\u0137\u0113t piek\u013cuvi resursam, ir DNS piepras\u012bjumu p\u0101rtver\u0161ana, izmantojot lok\u0101lo DNS serveri, un lietot\u0101jam tiek atgriezts IP adrese 'izsist\u0161anas' variantam, nevis piepras\u012btajam resursam. Tom\u0113r tas nenodro\u0161ina garant\u0113tu rezult\u0101tu, jo past\u0101v iesp\u0113ja nov\u0113rst adreses mai\u0146u:<\/p>\n<p><b>1. variants: Hosts faila redi\u0123\u0113\u0161ana (datoriem)<\/b><\/p>\n<p>Hosts fails ir katras oper\u0113t\u0101jsist\u0113mas neat\u0146emama sast\u0101vda\u013ca, kas \u013cauj to vienm\u0113r izmantot. Lai piek\u013c\u016btu resursam, lietot\u0101jam j\u0101:<\/p>\n<ol>\n<li>Uzziniet piepras\u012bt\u0101 resursa IP adresi<\/li>\n<li>Atv\u0113rt redi\u0123\u0113\u0161anai hosts failu (pras\u0101s administratora ties\u012bbas), kas atrodas:\n<ul>\n<li>Linux: \/etc\/hosts<\/li>\n<li>Windows: %WinDir%System32driversetchosts<\/li>\n<\/ul>\n<\/li>\n<li>Pievienojiet rindu \u0161\u0101d\u0101 form\u0101t\u0101:<\/li>\n<li>Saglab\u0101t izmai\u0146as<\/li>\n<\/ol>\n<p>\n\u0160\u012b metoda priek\u0161roc\u012bba ir t\u0101s sare\u017e\u0123\u012bt\u012bba un nepiecie\u0161am\u012bba p\u0113c administratora ties\u012bb\u0101m.<\/p>\n<p><b>2. variants: DoH (DNS p\u0101r HTTPS) vai DoT (DNS p\u0101r TLS)<\/b><\/p>\n<p>\u0160\u012bs metodes \u013cauj aizsarg\u0101t pret DNS piepras\u012bjumu mai\u0146u, izmantojot \u0161ifr\u0113\u0161anu, ta\u010du t\u0101s neatbalsta visi lietojumi. Apskat\u012bsim DoH uzst\u0101d\u012b\u0161anas vienk\u0101r\u0161\u012bbu Mozilla Firefox versij\u0101 66 no lietot\u0101ja puses:<\/p>\n<ol>\n<li>Iet uz adresi <noindex><a rel=\"nofollow\" href=\"http:\/\/about:config\">about:config<\/a><\/noindex> Firefox<\/li>\n<li>Apstiprin\u0101t, ka lietot\u0101js uz\u0146emas visu risku<\/li>\n<li>Main\u012bt parametra v\u0113rt\u012bbu <b>network.trr.mode<\/b> uz:\n<ul>\n<li>0 \u2014 atsl\u0113gt TRR<\/li>\n<li>1 \u2014 autom\u0101tisk\u0101 izv\u0113le<\/li>\n<li>2 \u2014 iesp\u0113jot DoH p\u0113c noklus\u0113juma<\/li>\n<\/ul>\n<\/li>\n<li>Main\u012bt parametru <b>network.trr.uri<\/b> izv\u0113loties DNS serveri\n<ul>\n<li>Cloudflare DNS: <noindex>mozilla.cloudflare-dns.com\/dns-query<\/noindex><\/li>\n<li>Google DNS: <noindex>dns.google.com\/experimental<\/noindex><\/li>\n<\/ul>\n<\/li>\n<li>Main\u012bt parametru <b>network.trr.boostrapAddress<\/b> uz:\n<ul>\n<li>Ja izv\u0113l\u0113ts Cloudflare DNS: 1.1.1.1<\/li>\n<li>Ja izv\u0113l\u0113ts Google DNS: 8.8.8.8<\/li>\n<\/ul>\n<\/li>\n<li>Main\u012bt parametra v\u0113rt\u012bbu <b>network.security.esni.enabled<\/b> uz <b>true<\/b><\/li>\n<li>P\u0101rbaud\u012bt konfigur\u0101cijas pareiz\u012bbu ar <noindex><a rel=\"nofollow\" href=\"https:\/\/www.cloudflare.com\/ssl\/encrypted-sni\/\">Cloudflare pakalpojumu<\/a><\/noindex><\/li>\n<\/ol>\n<p>\nKaut ar\u012b \u0161\u012b metode ir sare\u017e\u0123\u012bt\u0101ka, tai nav nepiecie\u0161amas administratora ties\u012bbas lietot\u0101jam, k\u0101 ar\u012b ir daudz citu DNS piepras\u012bjumu aizsardz\u012bbas veidu, kas nav aprakst\u012bti \u0161aj\u0101 rakst\u0101.<\/p>\n<p><b>3. variants (mobilaj\u0101m ier\u012bc\u0113m):<\/b> <\/p>\n<p>Cloudflare lietotnes izmanto\u0161ana <noindex><a rel=\"nofollow\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.cloudflare.onedotonedotonedotone\">Android<\/a><\/noindex> un <noindex><a rel=\"nofollow\" href=\"https:\/\/itunes.apple.com\/us\/app\/1-1-1-1-faster-internet\/id1423538627?mt=8\">IOS<\/a><\/noindex>.<\/p>\n<h3>Test\u0113\u0161ana<\/h3>\n<p>\nLai p\u0101rbaud\u012btu piek\u013cuves tr\u016bkumu resursiem, tika \u012bslaic\u012bgi ieg\u0101d\u0101ts dom\u0113ns, kas ir blo\u0137\u0113ts Krievijas teritorij\u0101:<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"http:\/\/1winu.xyz:80\">HTTP p\u0101rbaude + 80 ports<\/a><\/noindex><\/li>\n<li><noindex>HTTP p\u0101rbaude + 8080 ports<\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/1winu.xyz:443\">HTTPS p\u0101rbaude + 443 ports<\/a><\/noindex><\/li>\n<li><noindex>HTTPS p\u0101rbaude + 8443 ports<\/noindex><\/li>\n<\/ul>\n<p><\/p>\n<h3>Secin\u0101jums<\/h3>\n<p>\nCeru, ka \u0161is raksts b\u016bs noder\u012bgs un mudin\u0101s ne tikai administratorus detaliz\u0113t\u0101k izprast \u0161o t\u0113mu, bet ar\u012b dos izpratni, ka <b>resursi vienm\u0113r b\u016bs lietot\u0101ja pus\u0113, un jaunu risin\u0101jumu mekl\u0113\u0161ana tiem j\u0101b\u016bt neat\u0146emamai da\u013cai.<\/b><\/p>\n<h4>Noder\u012bgas saites<\/h4>\n<p><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/globalsign\/blog\/427563\/\">Standarta Encrypted SNI \u012bsteno\u0161ana p\u0101rl\u016bkprogramm\u0101 Firefox<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/335436\/\">Autonomais veids, k\u0101 apiet DPI<\/a><\/noindex><\/li>\n<\/ul>\n<p>\n<b class=\"spoiler_title\">Pielikums \u0101rpus raksta<\/b>Testu uz Cloudflare nav iesp\u0113jams iziet Tele2 operatora t\u012bkl\u0101, un pareizi konfigur\u0113ts DPI blo\u0137\u0113 piek\u013cuvi test\u0113\u0161anas platformai. <br \/>\nP.S. \u0160is ir pirmais providers, kas pareizi blo\u0137\u0113 resursus.<\/p>\n<p>Avots: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/453260\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0434\u0430\u043d\u043d\u043e\u0439 \u0441\u0442\u0430\u0442\u044c\u0435 \u043d\u0435 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u043f\u043e\u043b\u043d\u0430\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430 DPI \u0438 \u0432\u0441\u0435 \u0432\u043c\u0435\u0441\u0442\u0435 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u043e\u0435, \u0430 \u043d\u0430\u0443\u0447\u043d\u0430\u044f \u0446\u0435\u043d\u043d\u043e\u0441\u0442\u044c \u0442\u0435\u043a\u0441\u0442\u0430 \u043c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u0430. \u041d\u043e \u0432 \u043d\u0435\u0439 \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u043f\u0440\u043e\u0441\u0442\u0435\u0439\u0448\u0438\u0439 \u0441\u043f\u043e\u0441\u043e\u0431 \u043e\u0431\u0445\u043e\u0434\u0430 DPI, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0435 \u0443\u0447\u043b\u0438 \u043c\u043d\u043e\u0433\u0438\u0435 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438. \u041f\u0440\u0435\u0434\u0443\u043f\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u0435 \u21161: \u0434\u0430\u043d\u043d\u0430\u044f \u0441\u0442\u0430\u0442\u044c\u044f \u043d\u0435\u0441\u0435\u0442 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0445 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440, \u043d\u0435 \u043f\u043e\u0431\u0443\u0436\u0434\u0430\u0435\u0442 \u043d\u0438\u043a\u043e\u0433\u043e \u0447\u0442\u043e-\u043b\u0438\u0431\u043e \u043f\u0440\u0435\u0434\u043f\u0440\u0438\u043d\u0438\u043c\u0430\u0442\u044c \u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c. \u0418\u0434\u0435\u044f \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0430 \u043d\u0430 \u043b\u0438\u0447\u043d\u043e\u043c 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