Abaphandi abavela kwiYunivesithi yaseWaterloo kunye ne-US Naval Research Laboratory babonise iziphumo zophuhliso lwe-Tor network simulator, enokuthelekiswa nenani leendawo kunye nabasebenzisi kwinethiwekhi yeTor engundoqo kunye nokuvumela iimvavanyo ezikufutshane neemeko zangempela. Izixhobo kunye ne-network modeling methodology elungiselelwe ngexesha lovavanyo lwenza ukuba kwenzeke, kwikhompyutheni ene-4 TB ye-RAM, ukulinganisa ukusebenza kwenethiwekhi ye-6489 ye-Tor nodes, apho i-792 amawaka abasebenzisi abangabonakaliyo badibaniswe ngaxeshanye.
Kuphawulwe ukuba lo ngowokuqala ukulinganisa okupheleleyo kwenethiwekhi yeTor, inani leendawo ezihambelana nenethiwekhi yangempela (inethiwekhi yeTor esebenzayo inama-nodes angama-6 kunye nezigidi ezi-2 zabasebenzisi abaxhunyiwe). Ukulinganisa okupheleleyo kwenethiwekhi yeTor kunomdla ukusuka kwindawo yokujonga i-bottlenecks, ukulinganisa ukuziphatha kokuhlaselwa, ukuvavanya iindlela ezintsha zokuphucula kwiimeko zangempela, kunye nokuvavanya iingcamango ezinxulumene nokhuseleko.
Nge-simulator epheleleyo, abaphuhlisi beTor baya kukwazi ukuphepha ukwenza iimvavanyo kwinethiwekhi engundoqo okanye kwiindawo zabasebenzi ngabanye, ezenza imingcipheko eyongezelelweyo yokuphula ubumfihlo bomsebenzisi kwaye ingabandakanyi ukusilela. Ngokomzekelo, inkxaso yeprotocol entsha yokulawula ukudibanisa kulindeleke ukuba ifakwe kwi-Tor kwiinyanga ezizayo, kwaye ukulinganisa kuya kusivumela ukuba sifunde ngokupheleleyo ukusebenza kwayo ngaphambi kokuthunyelwa kwinethiwekhi yangempela.
Ukongeza ekupheliseni impembelelo yovavanyo kubumfihlo kunye nokuthembeka kwenethiwekhi yeTor ephambili, ubukho bothungelwano lovavanyo olwahlukileyo buya kwenza ukuba kube lula ukuvavanya kunye nokucoca ikhowudi entsha ngexesha lenkqubo yophuhliso, kwangoko ukuphumeza utshintsho kuzo zonke iindawo kunye nabasebenzisi ngaphandle kovavanyo. ulinde ukugqitywa kokuphunyezwa kwexesha eliphakathi, ngokukhawuleza ukudala kunye nokuvavanya iiprototypes ngokuphunyezwa kweengcamango ezintsha.
Umsebenzi uyaqhubeka ukuphucula izixhobo, ezithi, njengoko zichazwe ngabaphuhlisi, ziya kunciphisa ukusetyenziswa kwezixhobo ngamaxesha e-10 kwaye ziya kuvumela, kwizixhobo ezifanayo, ukulinganisa ukusebenza kwamanethiwekhi aphezulu kunenethiwekhi yangempela, enokufuneka. ukuchonga iingxaki ezinokubakho ngokukalwa kweTor. Umsebenzi udale iindlela ezininzi zokubonisa inethiwekhi entsha ezenza ukuba kwenzeke ukuqikelela utshintsho kwimeko yenethiwekhi ngokuhamba kwexesha kwaye usebenzise iijenereyitha zendlela yangasemva ukulinganisa umsebenzi wabasebenzisi.
Abaphandi baye bafunda ipateni phakathi kobukhulu bothungelwano olufanisiweyo kunye nokuthembeka kwentelekelelo yeziphumo zovavanyo kwinethiwekhi yokwenyani. Ngexesha lophuhliso lweTor, utshintsho kunye nokulungiswa kuvavanywa kwangaphambili kuthungelwano oluncinci lovavanyo oluqulethe iindawo ezimbalwa kunye nabasebenzisi kunenethiwekhi yokwenyani. Kwafunyaniswa ukuba iimpazamo zezibalo kwiingqikelelo ezifunyenwe kwimilinganiselo emincinci zinokuhlawulwa ngokuphindaphinda iimvavanyo ezizimeleyo ngamaxesha amaninzi kunye neeseti ezahlukeneyo zedatha yokuqala, ngenxa yokuba inkulu inethiwekhi efanisiweyo, iimvavanyo eziphindaphindiweyo ezimbalwa ziyafuneka ukufumana izigqibo ezibalulekileyo zezibalo.
Ukwenza imodeli kunye nokulinganisa inethiwekhi yeTor, abaphandi baphuhlisa iiprojekthi ezininzi ezivulekileyo ezisasazwa phantsi kwelayisensi ye-BSD:
- I-Shadow sisimulator yenethiwekhi yendalo yonke ekuvumela ukuba usebenzise ikhowudi yesicelo senethiwekhi yokwenyani ukuphinda wenze iinkqubo ezisasaziweyo ngamawaka eenkqubo zenethiwekhi. Ukulinganisa iinkqubo ezisekwe kokwenyani, usetyenziso olungalungiswanga, iShadow isebenzisa iindlela zokulinganisa umnxeba. Ukusebenzisana kwenethiwekhi yezicelo kwindawo efaniswayo kuqhutyelwa ngokusetyenziswa kwe-VPN kunye nokusetyenziswa kwe-simulators yeendlela eziqhelekileyo zenethiwekhi (TCP, UDP). Ixhasa ukulinganisa okuqhelekileyo kweempawu zenethiwekhi yenyani ezifana nokulahleka kwepakethi kunye nokulibaziseka kokuhanjiswa. Ukongeza kwiimvavanyo zeTor, kwenziwa inzame yokuphuhlisa iplagin yeShadow ukulinganisa inethiwekhi yeBitcoin, kodwa le projekthi ayizange iphuhliswe.
- I-Tornettools sisixhobo sokwenza iimodeli ezinokwenyani zenethiwekhi yeTor enokuthi iqhutywe kwindawo yeSithunzi, kunye nokusungula kunye nokuqwalasela inkqubo yokulinganisa, ukuqokelela kunye nokubona iziphumo. Iimethrikhi ezibonisa ukusebenza kwenethiwekhi yeTor yokwenyani zinokusetyenziswa njengeetemplates zokwenziwa kwenethiwekhi.
- I-TGen yi-generator ye-traffic flows esekelwe kwiiparamitha ezichazwe ngumsebenzisi (ubungakanani, ukulibaziseka, inani lokuhamba, njl.). Izikimu zokuyila iTrafikhi zingaxelwa zombini ngokusekwe kwizikripthi ezikhethekileyo kwifomathi yeGraphML kwaye kusetyenziswa imifuziselo yeMarkov enokwenzeka yokusasazwa kokuqukuqela kweTCP kunye neepakethi.
- I-OnionTrace sisixhobo sokulandelela ukusebenza kunye neziganeko kwinethiwekhi yeTor efanisiweyo, kunye nokurekhoda kunye nokuphinda udlale ulwazi malunga nokwenziwa kwamakhonkco e-Tor nodes kunye nokwabela ukuhamba kwezithuthi kubo.
umthombo: opennet.ru