Makore akati wandei apfuura, boka repasi rese revasayendisiti kubva kumayunivhesiti eMassachusetts, Pennsylvania neMunich, Germany. tsvakiridzo mukubudirira kwema proxies echinyakare senge anti-censorship chishandiso. Nekuda kweizvozvo, masayendisiti akakurudzira nzira nyowani yekunzvenga ichivharira, zvichibva padzidziso yemutambo. Takagadzirira shanduro yakagadziridzwa yemapfundo makuru eiri basa.
Nhanganyaya
Maitiro eakakurumbira block-bypass maturusi seTor akavakirwa pane yakavanzika uye yakasarudzika kugovera yeproxy IP kero pakati pevatengi vanobva kumatunhu akavharirwa. Nekuda kweizvozvo, vatengi vanofanirwa kuramba vasingaonekwe nemasangano kana zviremera zvinomisa zvivharo. Panyaya yeTor, ava vanogovera proxy vanonzi mabhiriji.
Dambudziko guru nemasevhisi akadaro kurwisa kwevari mukati. Kuvharisa vamiririri vanogona kushandisa proxies ivo pachavo kutsvaga kero dzavo uye kuvavharira. Kuti uderedze mukana wekuverenga proxy, block bypass zvishandiso shandisa akasiyana kero yekugovera maitiro.
Muchiitiko ichi, iyo inonzi ad hoc heuristics nzira inoshandiswa, iyo inogona kudarika. Kugadzirisa dambudziko iri, masayendisiti akafunga kuunza kunetsana pakati pemasevhisi anobatanidzwa mukuvharira uye masevhisi kuvapfuura semutambo. Vachishandisa dzidziso yemutambo, vakagadzira nzira dzakakwana dzekuzvibata kune rimwe nerimwe remapato - kunyanya, izvi zvakaita kuti zvive nyore kugadzira nzira yekugovera proxy.
Maitiro echinyakare kukiya bypass masisitimu anoshanda
Vhara maturusi ekupfuura seTor, Lantern, uye Psiphon shandisa nhevedzano yekunze-kwe-region proxies ine zvirambidzo munzvimbo iyo inoshandiswa kutsausa traffic yevashandisi kubva kumatunhu iwayo uye kuendesa kune yakavharika zviwanikwa.
Kana ma censors akaziva nezve IP kero yemumiriri akadaro - semuenzaniso, mushure mekuishandisa ivo pachavo - inogona kunyoreswa nyore nyore uye kuvharwa. Naizvozvo, muchokwadi, iyo IP kero yeakadai proxies haina kumbobvira yaburitswa, uye vashandisi vanopihwa imwe kana imwe proxy vachishandisa nzira dzakasiyana. Semuenzaniso, Tor ine bhiriji system.
Ndiko kuti, basa guru nderekupa vashandisi mukana kune zvakavharika zviwanikwa uye kuderedza mukana wekuburitswa kwekero yeproxy.
Kugadzirisa dambudziko iri mukuita hakusi nyore - zvakanyanya kuoma kunyatso kusiyanisa vashandisi vakajairwa kubva kune censors masquerading kubva kwavari. Heuristic nzira dzinoshandiswa kuvanza ruzivo. Semuenzaniso, Tor inodzika nhamba yebhiriji IP kero inowanikwa kune vatengi kune vatatu pachikumbiro.
Izvi hazvina kumisa zviremera zveChinese kuzivisa ese mabhiriji eTor munguva pfupi. Kuunzwa kwezvimwe zvirambidzo kuchakanganisa zvakanyanya kushandiswa kweiyo block bypass system, ndiko kuti, vamwe vashandisi havazokwanisi kuwana iyo proxy.
Dzidziso yemutambo inopedza sei dambudziko iri
Nzira inotsanangurwa mubasa inobva pane inonzi "mutambo wekugamuchira koreji". Uye zvakare, zvinofungidzirwa kuti Internet censoring agents vanogona kutaurirana munguva chaiyo uye kushandisa maitiro akaoma - semuenzaniso, kusavharira proxies nekukurumidza kana kuzviita ipapo zvichienderana nemamiriro akasiyana.
Kubvumidzwa kukoreji kunoshanda sei?
Ngatitii tine n vadzidzi uye m makoji. Mudzidzi wega wega anoita yake runyorwa rwezvaanofarira pakati pezvikoro zvedzidzo zvichibva pane mamwe maitiro (kureva, makoreji chete akaendeswa magwaro anoiswa). Nekune rimwe divi, makoreji anoisawo chinzvimbo chevadzidzi vakaendesa magwaro zvichienderana nezvavanoda.
Chekutanga, koreji inodimbura avo vasingaite sarudzo - havagamuchirwe kunyangwe paine kushomeka. Ipapo vanyoreri vanosarudzwa vachishandisa algorithm iyo inofunga inodiwa paramita.
Zvinogoneka kuti panogona kunge paine "kusagadzikana kwekugamuchira" - semuenzaniso, kana paine vadzidzi vaviri 1 ne2 vakagamuchirwa mumakoreji a uye b zvichiteerana, asi mudzidzi wechipiri angada kudzidza kuyunivhesiti a. Muchiitiko chekuedza kwakatsanangurwa, chete kugadzikana kwakagadzikana pakati pezvinhu zvakatorwa munhoroondo.
Yakanonoka Kubvuma Algorithm
Sezvatotaurwa, kune imwe nhamba yevadzidzi iyo koreji isingazogamuchire chero mamiriro ezvinhu. Naizvozvo, iyo yakadzoserwa yekugashira algorithm inoita fungidziro yekuti vadzidzi ava havatenderwe kunyorera kune icho chikoro. Muchiitiko ichi, vadzidzi vese vanoedza kupinda mumakoreji avanoda zvakanyanya.
Sangano rine huwandu hwevadzidzi q rinomirira munhu wepamusoro wepamusoro zvichienderana nemaitiro ayo, kana zvese kana nhamba yevanonyorera iri pasi pehuwandu hwenzvimbo dziripo. Vamwe vese vanorambwa, uye vadzidzi ava vanonyorera kuyunivhesiti inotevera pane yavo runyorwa rwezvavanoda. Iyi koreji inosarudzawo vadzidzi vepamusoro-soro kubva kune avo vakanyorera ipapo ipapo uye avo vasina kugamuchirwa mukoreji yekutanga. Uyezve, zvakare nhamba yakati yevanhu haipfuuri.
Maitiro acho anopera kana mudzidzi wega wega ari parunyorwa rwekumirira yeimwe koreji kana kuti akarambwa kubva kuzvikoro zvese zvedzidzo kwaaigona kunyoresa. Nekuda kweizvozvo, makoreji anozopedzisira abvuma munhu wese kubva pamazita avo ekumirira.
Ko proxy inei nazvo?
Nekufananidza nevadzidzi uye makoreji, masayendisiti akapa chaiyo proxy kumutengi wega wega. Mhedzisiro yaive mutambo unonzi proxy assignment game. Vatengi, kusanganisira vanokwanisa censor agents, vanoita sevadzidzi vanoda kuziva kero yeproxies, iyo inotamba basa remakoreji - vane inozivikanwa inopera bandwidth pamberi.
Mumuenzaniso wakatsanangurwa pane n vashandisi (vatengi) A =
{a1, a2, ..., an}, iyo inokumbira kupinda kune proxy kuti ipfuure kuvharira. Saka, ai ndiyo identifier ye "total" mutengi. Pakati pevashandisi ava n, m ma censor agents, anodudzwa saJ = {j1, j2, ..., jm}, vamwe vese vashandisiwo zvavo. Vese m vamiririri vanodzorwa nechiremera chepakati uye vanogamuchira mirairo kubva kwairi.
Zvinofungidzirwawo kuti pane seti ye proxies P = {p1, p2, ..., pl}. Mushure mekukumbira kwega kwega, mutengi anogashira ruzivo (IP kero) nezve k proxies kubva kune inogovera chinhu. Nguva yakakamurwa kuita nhanho-nhanho, yakasarudzwa se t (mutambo unotanga pa t = 0).
Mumwe nemumwe mutengi anoshandisa scoring function kuongorora proxy. Masayendisiti akashandisa basa racho 
kumaka zvibodzwa izvo mushandisi akapihwa proxy px pachikuva t. Saizvozvo, proxy yega yega inoshandisa basa kuongorora vatengi. Ndizvozvo ndicho chibodzwa icho proxy px yakapihwa mutengi ai padanho t.
Zvakakosha kuyeuka kuti mutambo wese ndeyechokwadi, kureva kuti, "mugovera" pachake anoutamba achimiririra proxy uye vatengi. Kuti aite izvi, haafanire kuziva rudzi rwemutengi kana zvavanofarira maererano nemaproxies. Pane imwe neimwe nhanho pane mutambo, uye yakanonoka kugamuchira algorithm inoshandiswa zvakare.
Mhinduro
Zvinoenderana nemhedzisiro yekuenzanisa, nzira yekushandisa dzidziso yemitambo yakaratidza hunyanzvi hwepamusoro kana ichienzaniswa neanozivikanwa ekukiya bypass masisitimu.
Kuenzanisa neRBridge VPN sevhisi
Panguva imwecheteyo, masayendisiti akaona akati wandei akakosha mapoinzi anogona kukanganisa kunaka kwekushanda kweakadaro masisitimu:
- Kunyangwe zano rema censors, sisitimu yekukunda kuvharika inofanirwa kugara ichigadziridzwa nemaproxies matsva, zvikasadaro kushanda kwayo kunodzikira.
- Kana ma censors aine zviwanikwa zvakakosha, anogona kuwedzera kuvharira kushanda nekuwedzera maajenti akagoverwa munzvimbo kuti awane proxies.
- Iyo yekumhanyisa iyo ma proxies matsva anowedzerwa yakakosha pakubudirira kweiyo system yekukunda kuvharira.
Zvishandiso zvinobatsira uye zvinhu kubva :
Source: www.habr.com