{"id":37728,"date":"2019-10-31T22:19:22","date_gmt":"2019-10-31T19:19:22","guid":{"rendered":"https:\/\/prohoster.info\/blog\/konfidentsialnoe-oblako-ishhem-alternativu-otkrytym-resheniyam\/"},"modified":"2019-10-31T22:19:22","modified_gmt":"2019-10-31T19:19:22","slug":"konfidentsialnoe-oblako-ishhem-alternativu-otkrytym-resheniyam","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/konfidentsialnoe-oblako-ishhem-alternativu-otkrytym-resheniyam","title":{"rendered":"Konfidentsiaalne \"pilv\". Otsime alternatiive avatud lahendustele","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Olen inseneriharidusega, kuid suhtlen rohkem ettev\u00f5tjate ja tootmisdirektoritega. Aeg tagasi p\u00f6\u00f6rdus minu poole \u00fche t\u00f6\u00f6stusettev\u00f5tte omanik n\u00f5u saamiseks. Kuigi ettev\u00f5te on suur ja asutatud 90-ndatel, toimivad juhtimine ja raamatupidamine vana kooli kohaselt lokaalses v\u00f5rgus.<\/p>\n<p>See on mure oma \u00e4ri p\u00e4rast ja riigi kontrolli tugevnemise tagaj\u00e4rg. Seadusandlust ja m\u00e4\u00e4rusi v\u00f5ivad kontrollivad organid t\u00f5lgendada v\u00e4ga laialdaselt. N\u00e4itena v\u00f5ib tuua muudatused maksukoodis, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.vedomosti.ru\/politics\/articles\/2019\/06\/05\/803495-verhovnii-sud\">mis likvideerivad t\u00e4htaja maksusrikkumise puhul,<\/a><\/noindex> t\u00f5eline h\u00e4ving <noindex><a rel=\"nofollow\" href=\"https:\/\/www.finanz.ru\/novosti\/aktsii\/sledkom-predlozhil-uprazdnit-bankovskuyu-taynu-v-rossii-1028355298\">pangandus- ja audiitort\u00e4htsuse osas.<\/a><\/noindex>. <\/p>\n<p>Kuna see on t\u00f5usnud, hakkas ettev\u00f5tte omanik otsima lahendusi teabe usaldusv\u00e4\u00e4rseks salvestamiseks ja dokumentide turvaliseks edastamiseks. Virtuaalne \"seif\".<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nT\u00f6\u00f6tasime probleemi v\u00e4lja oma s\u00fcsteemiadministraatoriga: on vajalik s\u00fcvitsi minev anal\u00fc\u00fcs olemasolevatest platvormidest.<\/p>\n<ul>\n<li>teenus peab olema mitte-pilv, klassikalises t\u00e4henduses, st ilma kolmandatel organisatsioonidel tarnimise v\u00f5imaluseta. Ainult oma server;<\/li>\n<li>vajalik on stabiilne salajane kr\u00fcpteerimine edastatud ja salvestatud andmete jaoks;<\/li>\n<li>on vajalik v\u00f5imalus sisu koheseks kustutamiseks igalt seadmel \u00fche nupuvajutusega;<\/li>\n<li>lahendus on v\u00e4lja t\u00f6\u00f6tatud v\u00e4lismaal.<\/li>\n<\/ul>\n<p>Neljas punkt, mida ma soovitasin eemaldada, kuna Venemaa rakendused omavad ametlikke sertifikaate. Direktor \u00fctles otse, mida nende sertifikaatidega ette v\u00f5tta. <\/p>\n<h3>Valime variandid<\/h3>\n<p>\nValisin kolm lahendust (mida rohkem valikuv\u00f5imalusi, seda rohkem kahtlusi):<\/p>\n<ul>\n<li>Avatud l\u00e4htekood \u2014 projekt <noindex><a rel=\"nofollow\" href=\"https:\/\/syncthing.net\/\">Syncthing.net <\/a><\/noindex>, mida toetab entusiast-arendaja Jacob Borg.<\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.resilio.com\/\">Resilio.com<\/a><\/noindex>, mis on USA Resilio Inc. j\u00e4relevalve all (varem nimetati see teenus BitTorrent Synciks).\n<\/li>\n<li>Projekt <noindex><a rel=\"nofollow\" href=\"https:\/\/e-safe.pro\/\">Pvtbox Elektriline seif<\/a><\/noindex> alates <noindex><a rel=\"nofollow\" href=\"https:\/\/pvtbox.net\">pvtbox.net<\/a><\/noindex> s\u00fcnkroonimise rakendused. K\u00fcprose registreerimine.<\/li>\n<\/ul>\n<p>Ettev\u00f5tte omanik ei oska tehnilisi n\u00fcansse h\u00e4sti, seega koostasin \u00fclevaate igasuguste plusside ja miinuste loendina.<\/p>\n<h3>Anal\u00fc\u00fcsi tulemused<\/h3>\n<p><\/p>\n<h4>Syncthing <\/h4>\n<p><\/p>\n<p><b>Plussid<\/b>: <\/p>\n<p><\/p>\n<ul>\n<li>Avatud l\u00e4htekood;<\/li>\n<li>Peamise arendaja aktiivsus; <\/li>\n<li>Projekt on olemas v\u00e4ga pikka aega; <\/li>\n<li>Tasuta.<\/li>\n<\/ul>\n<p><\/p>\n<p><b>Miinused: <\/b><\/p>\n<p><\/p>\n<ul>\n<li>iOS-i liidese klienti pole; <\/li>\n<li>Aeglased Turn serverid (need on tasuta, seega viivisega). Neile, kes<br \/>\nei tea, Turn'i kasutatakse, kui otsene \u00fchendus ei ole v\u00f5imalik;<\/li>\n<li>Lihtne liidese seadistamine (vajalik pikaajaline programmeerimise kogemus);<\/li>\n<li>Kiire kaubandusliku toe puudumine.<\/li>\n<\/ul>\n<p><\/p>\n<h4>Resilio <\/h4>\n<p><\/p>\n<p><b>Plussid: <\/b>Toetab k\u00f5iki seadmeid ja kiireid Turn-servereid.<\/p>\n<p><\/p>\n<p><b>Miinused: <\/b>\u00dcks v\u00e4ga oluline probleem \u2013 t\u00e4ielik ignoreerimine tugiteenuste poolt k\u00f5igist p\u00f6\u00f6rdumistest. Null reaktsiooni, isegi kui kirjutada erinevatelt aadressidelt. <\/p>\n<p><\/p>\n<h4>Pvtbox<\/h4>\n<p><\/p>\n<p><b>Plussid: <\/b><\/p>\n<p><\/p>\n<ul>\n<li>Toetab k\u00f5iki seadmeid; <\/li>\n<li>Kiired Turn-serverid; <\/li>\n<li>V\u00f5imalus faili alla laadida ilma rakenduse installimiseta; <\/li>\n<li>Mugav tugiteenus, sealhulgas telefoni teel.<\/li>\n<\/ul>\n<p><\/p>\n<p><b>Miinused<\/b>: <\/p>\n<p><\/p>\n<ul>\n<li>Noor projekt (v\u00e4he \u00fclevaateid ja h\u00e4id arvustusi);<\/li>\n<li>V\u00e4ga tehniline, mitte alati arusaadav veebilehe liides;<\/li>\n<li>Pole p\u00f5hjalikku dokumentatsiooni, paljude k\u00fcsimuste korral tuleb tugiteenust torgata.<\/li>\n<\/ul>\n<p><\/p>\n<h3>Mida tellija valis<\/h3>\n<p>\nTema esimene k\u00fcsimus: mis m\u00f5tet on midagi tasuta arendada? Syncthingist loobuti kohe. Argumendid ei t\u00f6\u00f6tanud. <\/p>\n<p>Paari p\u00e4eva p\u00e4rast l\u00fckkas tellija Resilio Synci tagasi toe puudumise t\u00f5ttu, kuna ei olnud selge, kuhu p\u00f6\u00f6rduda erakorralistes olukordades. Lisaks usaldamatus Ameerika ettev\u00f5tte aadressi suhtes.<\/p>\n<p>Edasiseks anal\u00fc\u00fcsiks j\u00e4i Pvtbox elektrooniline seif. Teostasime t\u00e4ieliku tehnilise auditi selle platvormi \u00fcle, keskendudes andmete pealtkuulamise, dekr\u00fcptimise ja volitamata sisenemise v\u00f5imalustele.<\/p>\n<h3>Auditi protsess<\/h3>\n<p>\nAnal\u00fc\u00fcsisime \u00fchendusi programmi k\u00e4ivitamisel, t\u00f6\u00f6 k\u00e4igus ja rahulikus olekus. T\u00e4nap\u00e4eva standardite j\u00e4rgi ringleb kogu algne liiklus kr\u00fcpteerituna. Proovime l\u00e4bi viia MITM r\u00fcnnaku ja asendada sertifikaadi \"k\u00e4igus\" <i>Linux (Xubuntu Linux 18.04), Wireshark<\/i>, <i>Mitmproxy<\/i>. Selleks paigaldame vahendaja rakenduse Pvtbox ja serveri pvtbox.net vahele (andmevahetus serveriga pvtbox.net toimub https-\u00fchenduse kaudu).<\/p>\n<p>K\u00e4ivitame rakenduse, et veenduda, et programm ja failide s\u00fcnkroniseerimine t\u00f6\u00f6tavad. Linuxis on v\u00f5imalik kohe n\u00e4ha logimist, kui rakendus k\u00e4ivitada terminalist.<br \/>\n<img decoding=\"async\" alt=\"Konfidentsiaalne &quot;pilv&quot;. Otsime alternatiive avatud lahendustele\" src=\"\/wp-content\/uploads\/2019\/09\/8e19ec533544a6f138c3f16308e02888.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nL\u00fclitame rakenduse v\u00e4lja ja asendame hosti aadressi pvtbox.net failis <i>\/etc\/hosts <\/i>superkasutaja \u00f5igustega. Asendame aadressi meie proxy-serveri aadressiga.<br \/>\n<img decoding=\"async\" alt=\"Konfidentsiaalne &quot;pilv&quot;. Otsime alternatiive avatud lahendustele\" src=\"\/wp-content\/uploads\/2019\/09\/f6befbf010686270c48656e15213f521.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nN\u00fc\u00fcd valmistame meie proxy-serveri ette MITM r\u00fcnnakuks arvutis, mille aadress on 192.168.1.64 meie kohalikus v\u00f5rgus. Selleks paigaldame mitmproxy paketi versiooniga 4.0.4.<\/p>\n<p>K\u00e4ivitame proxy-serveri pordil 443:<br \/>\n<i>$ sudo mitmproxy -p 443<\/i><\/p>\n<p>K\u00e4ivitame esimeses arvutis programmi Pvtbox, vaatame mitmproxy v\u00e4ljundit ja rakenduse logisid.<br \/>\n<img decoding=\"async\" alt=\"Konfidentsiaalne &quot;pilv&quot;. Otsime alternatiive avatud lahendustele\" src=\"\/wp-content\/uploads\/2019\/09\/cd7f53fc76349fdf18f65c75c555bc52.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<i>Mitmproxy <\/i>teatab, et klient ei usalda vaheserveri sertifikaati. Rakenduse logides n\u00e4eme ka, et vaheserveri sertifikaat ei l\u00e4binud kontrolli ning programm keeldub t\u00f6\u00f6tamast.<\/p>\n<p>Paigaldame vaheserveri sertifikaadi <i>mitmproxy <\/i>Pvtbox rakendusega arvutisse, et muuta sertifikaat \u201eusaldusv\u00e4\u00e4rseks\u201c. Arvutisse paigaldame paketi ca-certificates. Seej\u00e4rel kopeerime sertifikaadi mitmproxy-ca-cert.pem vaheserveri .mitmproxy kataloogist Pvtbox rakenduse arvutisse katalooge \/usr\/local\/share\/ca-certificates. <\/p>\n<p>K\u00e4ivitame k\u00e4sklused:<br \/>\n<i>$ sudo openssl x509 -in mitmproxy-ca-cert.pem -inform PEM -out mitmproxy-ca-cert.crt<\/i><br \/>\n<i>$ sudo update-ca-certificates<\/i><br \/>\n<img decoding=\"async\" alt=\"Konfidentsiaalne &quot;pilv&quot;. Otsime alternatiive avatud lahendustele\" src=\"\/wp-content\/uploads\/2019\/09\/8f30b4cebb483ad54869993e225d7c90.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nK\u00e4ivitame Pvtbox rakenduse. Sertifikaat ei l\u00e4binud kontrolli, programm keeldub t\u00f6\u00f6tamast. T\u00f5en\u00e4oliselt kasutab rakendus kaitsemehhanismi <i>Certificate pinning<\/i>.<\/p>\n<p>Sarnane r\u00fcnnak viidi l\u00e4bi hostil <i>signalserver.pvtbox.net, <\/i>nagu ka otsesel peer-2-peer \u00fchendusel s\u00f5lmpunktide vahel. Arendaja m\u00e4rgib, et peer-2-peer \u00fchenduste moodustamiseks kasutatav rakendus kasutab avatud protokolli webrtc, kus rakendatakse l\u00f5pp-to-l\u00f5pp kr\u00fcpteerimist protokolli <i>DTLSv1.2.<\/i><\/p>\n<p>V\u00f5tmed genereeritakse iga \u00fchenduse loomise korral ja edastatakse kr\u00fcpteeritud kanali kaudu l\u00e4bi <i>signalserver.pvtbox.net.<\/i><\/p>\n<p>Teoreetiliselt oleks v\u00f5imalik tabada webrtc pakkumise ja vastuse s\u00f5numeid, muuta seal kr\u00fcpteerimisv\u00f5tmeid ja olla v\u00f5imeline dekr\u00fcpteerima k\u00f5ik webrtc kaudu edastatavad s\u00f5numid. Kuid mitte mingil viisil ei \u00f5nnestunud r\u00fcnnata signalserver.pvtbox.net, seet\u00f5ttu ei ole ka v\u00f5imalik tabada ja muuta s\u00f5numeid, mis saadetakse l\u00e4bi signalserver.pvtbox.net.<\/p>\n<p>Seet\u00f5ttu ei ole v\u00f5imalik selle r\u00fcnnaku l\u00e4biviimine peer-2-peer \u00fchendustele.<\/p>\n<p>Leitakse ka faile, mis sisaldavad sertifikaate, mis on tarnitud koos programmiga. Fail asub teel \/opt\/pvtbox\/certifi\/cacert.pem. See fail asendati failiga, mis sisaldab meie vaheserveri mitmproxy usaldusv\u00e4\u00e4rset sertifikaati. Tulemused ei muutunud - programm keeldus s\u00fcsteemiga \u00fchendamast, logis oli sama t\u00f5rge,<br \/>\net sertifikaat ei l\u00e4binud kontrolli.<\/p>\n<h3>Auditi kokkuv\u00f5te<\/h3>\n<p>\nMa ei saanud liiklust tabada ega muuta. Failide nimed, r\u00e4\u00e4kimata nende sisust, edastatakse kr\u00fcpteeritud kujul, kasutatakse l\u00f5pp-to-l\u00f5pp kr\u00fcpteerimist. Rakenduses on rakendatud mitmeid kaitsemehhanisme, mis takistavad pealtkuulamisi ja sisestamisi. <\/p>\n<p>Tulemuseks ostis ettev\u00f5te kaks eraldiseisvat serverit (f\u00fc\u00fcsiliselt erinevates kohtades), et tagada p\u00fcsiv juurdep\u00e4\u00e4s teabele. Esimest serverit kasutatakse teabe vastuv\u00f5tmiseks, t\u00f6\u00f6tlemiseks ja salvestamiseks, teist \u2013 varukoopiate tegemiseks. <\/p>\n<p>Saadud individuaalsele pilve on \u00fchendatud direktori t\u00f6\u00f6terminal ja iOS-i mobiiltelefon. Teisi t\u00f6\u00f6tajaid \u00fchendavad ettev\u00f5tte s\u00fcsteemiadministraator ja Pvtboxi tehniline toetus. <\/p>\n<p>M\u00f6\u00f6dunud aja jooksul pole tuttavalt mingeid kaebusi olnud. Loodan, et minu \u00fclevaade aitab Habra lugejaid sarnases olukorras.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/465861\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u042f \u0438\u043d\u0436\u0435\u043d\u0435\u0440 \u043f\u043e \u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044e, \u043d\u043e \u043e\u0431\u0449\u0430\u044e\u0441\u044c \u0431\u043e\u043b\u044c\u0448\u0435 \u0441 \u043f\u0440\u0435\u0434\u043f\u0440\u0438\u043d\u0438\u043c\u0430\u0442\u0435\u043b\u044f\u043c\u0438 \u0438 \u0434\u0438\u0440\u0435\u043a\u0442\u043e\u0440\u0430\u043c\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432. \u041d\u0435\u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u043d\u0430\u0437\u0430\u0434 \u0437\u0430 \u0441\u043e\u0432\u0435\u0442\u043e\u043c \u043e\u0431\u0440\u0430\u0442\u0438\u043b\u0441\u044f \u0432\u043b\u0430\u0434\u0435\u043b\u0435\u0446 \u043f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u043e\u0439 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438. \u041d\u0435\u0441\u043c\u043e\u0442\u0440\u044f \u043d\u0430 \u0442\u043e, \u0447\u0442\u043e \u043f\u0440\u0435\u0434\u043f\u0440\u0438\u044f\u0442\u0438\u0435 \u043a\u0440\u0443\u043f\u043d\u043e\u0435, \u0438 \u0441\u043e\u0437\u0434\u0430\u043d\u043e \u0432 90-\u0445, \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0438 \u0431\u0443\u0445\u0433\u0430\u043b\u0442\u0435\u0440\u0438\u044f \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0442 \u043f\u043e \u0441\u0442\u0430\u0440\u0438\u043d\u043a\u0435 \u0432 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0439 \u0441\u0435\u0442\u0438. \u042d\u0442\u043e \u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u0435 \u043e\u043f\u0430\u0441\u0435\u043d\u0438\u0439 \u0437\u0430 \u0441\u0432\u043e\u0439 \u0431\u0438\u0437\u043d\u0435\u0441 \u0438 \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u044f \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044f \u0441\u043e \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0433\u043e\u0441\u0443\u0434\u0430\u0440\u0441\u0442\u0432\u0430. \u0417\u0430\u043a\u043e\u043d\u044b \u0438 \u043d\u043e\u0440\u043c\u0430\u0442\u0438\u0432\u044b [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":28319,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-37728","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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