{"id":105078,"date":"2022-09-12T21:36:56","date_gmt":"2022-09-12T19:36:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-nncp-8-8-0-utilit-dlya-peredachi-fajlov-komand-v-rezhime-store-and-forward"},"modified":"2022-09-12T21:36:56","modified_gmt":"2022-09-12T19:36:56","slug":"reliz-nncp-8-8-0-utilit-dlya-peredachi-fajlov-komand-v-rezhime-store-and-forward","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/reliz-nncp-8-8-0-utilit-dlya-peredachi-fajlov-komand-v-rezhime-store-and-forward","title":{"rendered":"Vyd\u00e1n\u00ed NNCP 8.8.0, utilit pro p\u0159enos soubor\u016f\/p\u0159\u00edkaz\u016f v re\u017eimu store-and-forward","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byl vyd\u00e1n Node-to-Node CoPy (NNCP), sada n\u00e1stroj\u016f pro bezpe\u010dn\u00fd p\u0159enos soubor\u016f, e-mail\u016f a p\u0159\u00edkaz\u016f k proveden\u00ed v re\u017eimu store-and-forward. Podporuje provoz na opera\u010dn\u00edch syst\u00e9mech kompatibiln\u00edch s POSIX. N\u00e1stroje jsou napsan\u00e9 v jazyce Go a distribuov\u00e1ny pod licenc\u00ed GPLv3.    <\/p>\n<p>N\u00e1stroje jsou zam\u011b\u0159eny na pomoc p\u0159i vytv\u00e1\u0159en\u00ed mal\u00fdch peer-to-peer friend-to-friend s\u00edt\u00ed (n\u011bkolik uzl\u016f) se statickou routou pro bezpe\u010dn\u00fd p\u0159enos soubor\u016f v re\u017eimu fire-and-forget, \u017e\u00e1dosti o soubory, e-maily a po\u017eadavky na vykon\u00e1n\u00ed p\u0159\u00edkaz\u016f. V\u0161echny p\u0159en\u00e1\u0161en\u00e9 pakety jsou \u0161ifrov\u00e1ny (end-to-end) a explicitn\u011b autentizov\u00e1ny podle zn\u00e1m\u00fdch ve\u0159ejn\u00fdch kl\u00ed\u010d\u016f p\u0159\u00e1tel. Cibulov\u00e9 (jako v Tor) \u0161ifrov\u00e1n\u00ed se aplikuje na v\u0161echny mezilehl\u00e9 pakety. Ka\u017ed\u00fd uzel m\u016f\u017ee p\u016fsobit jak jako klient, tak <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/dts-los-angeles\/\"   title=\"serveru\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3854\">serveru<\/a> a pou\u017e\u00edvat jak model push, tak model poll chov\u00e1n\u00ed.    <\/p>\n<p>Odli\u0161nost NNCP od \u0159e\u0161en\u00ed UUCP a FTN (FidoNet Technology Network), krom\u011b v\u00fd\u0161e zm\u00edn\u011bn\u00e9ho \u0161ifrov\u00e1n\u00ed a autentizace, spo\u010d\u00edv\u00e1 v podpo\u0159e z krabice s\u00edt\u00ed floppynet a po\u010d\u00edta\u010d\u016f, kter\u00e9 jsou fyzicky izolov\u00e1ny (air-gapped) od nezabezpe\u010den\u00fdch m\u00edstn\u00edch a ve\u0159ejn\u00fdch s\u00edt\u00ed. Dal\u0161\u00ed zvl\u00e1\u0161tnost\u00ed NNCP je tak\u00e9 snadn\u00e1 integrace (vedle UUCP) se st\u00e1vaj\u00edc\u00edmi po\u0161tovn\u00edmi <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/dts-dusseldorf\/\"   title=\"servery\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3454\">servery<\/a>, jako je Postfix a Exim.  <\/p>\n<p>Mezi mo\u017en\u00e1 pou\u017eit\u00ed NNCP pat\u0159\u00ed organizace odes\u00edl\u00e1n\u00ed\/p\u0159ij\u00edm\u00e1n\u00ed po\u0161ty na za\u0159\u00edzen\u00edch bez st\u00e1l\u00e9ho p\u0159ipojen\u00ed k internetu, p\u0159enos soubor\u016f za podm\u00ednek nestabiln\u00edho s\u00ed\u0165ov\u00e9ho spojen\u00ed, bezpe\u010dn\u00fd p\u0159enos velmi velk\u00fdch objem\u016f dat na fyzick\u00fdch nosi\u010d\u00edch, vytv\u00e1\u0159en\u00ed izolovan\u00fdch s\u00edt\u00ed pro p\u0159enos dat chr\u00e1n\u011bn\u00fdch proti \u00fatok\u016fm typu MitM, obch\u00e1zen\u00ed s\u00ed\u0165ov\u00e9 cenzury a sledov\u00e1n\u00ed. Proto\u017ee kl\u00ed\u010d pro de\u0161ifrov\u00e1n\u00ed je pouze u p\u0159\u00edjemce, nez\u00e1visle na cest\u00e1ch dod\u00e1n\u00ed paketu p\u0159es s\u00ed\u0165 nebo fyzick\u00e9 nosi\u010de, t\u0159et\u00ed strana nem\u016f\u017ee p\u0159e\u010d\u00edst obsah, i kdy\u017e interceptuje doru\u010den\u00ed. Na druh\u00e9 stran\u011b autentizace pomoc\u00ed digit\u00e1ln\u00edho podpisu zabra\u0148uje vytvo\u0159en\u00ed fale\u0161n\u00e9ho doru\u010den\u00ed pod jm\u00e9nem jin\u00e9ho odes\u00edlatele.  <\/p>\n<p>Mezi novinkami NNCP 8.8.0, ve srovn\u00e1n\u00ed s p\u0159edchoz\u00edmi novinkami (verze 5.0.0):    <\/p>\n<ul>\n<li class=\"l\"> Nam\u00edsto hashovac\u00ed funkce BLAKE2b pro kontrolu integrity soubor\u016f je zaveden takzvan\u00fd MTH: Hashov\u00e1n\u00ed zalo\u017een\u00e9 na Merkleov\u011b stromu, kter\u00fd pou\u017e\u00edv\u00e1 hash BLAKE3. To umo\u017e\u0148uje vypo\u010d\u00edtat integritu za\u0161ifrovan\u00e9 \u010d\u00e1sti paket\u016f b\u011bhem stahov\u00e1n\u00ed, ani\u017e by to vy\u017eadovalo jej\u00ed pozd\u011bj\u0161\u00ed \u010dten\u00ed. Tak\u00e9 to umo\u017e\u0148uje neomezen\u00e9 paralelizov\u00e1n\u00ed kontroly integrity.\n<li class=\"l\"> Nov\u00fd form\u00e1t \u0161ifrovan\u00fdch paket\u016f je pln\u011b p\u0159\u00e1telsk\u00fd v\u016f\u010di streamov\u00e1n\u00ed, kdy\u017e nen\u00ed p\u0159edem zn\u00e1m\u00e1 velikost dat. Sign\u00e1l o dokon\u010den\u00ed p\u0159enosu s autentifikovanou velikost\u00ed jde p\u0159\u00edmo uvnit\u0159 \u0161ifrovan\u00e9ho toku. D\u0159\u00edve bylo nutn\u00e9 uchov\u00e1vat p\u0159en\u00e1\u0161en\u00e1 data do do\u010dasn\u00e9ho souboru, abychom zjistili jejich velikost. Tak zmizela mo\u017enost \u201e-use-tmp\u201c v t\u00fdmu \u201enncp-exec\u201c zcela zbyte\u010dn\u011b.\n<li class=\"l\"> Funkce BLAKE2b KDF a XOF byly nahrazeny BLAKE3 za \u00fa\u010delem zkr\u00e1cen\u00ed po\u010dtu pou\u017e\u00edvan\u00fdch kryptografick\u00fdch primit\u00edv\u016f a zjednodu\u0161en\u00ed k\u00f3du.\n<li class=\"l\"> Objevila se mo\u017enost detekce dal\u0161\u00edch uzl\u016f v lok\u00e1ln\u00ed s\u00edti prost\u0159ednictv\u00edm multicastov\u00e9ho rozes\u00edl\u00e1n\u00ed na adrese \u201eff02::4e4e:4350\u201c.\n<li class=\"l\"> Objevily se multicastov\u00e9 skupiny (analog echokonferenc\u00ed FidoNet nebo diskusn\u00edch skupin Usenet), kter\u00e9 umo\u017e\u0148uj\u00ed jedn\u00edm paketem poslat data mnoha \u00fa\u010dastn\u00edk\u016fm skupiny, kde ka\u017ed\u00fd uzel tak\u00e9 retransmituje paket ostatn\u00edm \u00fa\u010dastn\u00edk\u016fm. \u010cten\u00ed multicastov\u00e9ho paketu vy\u017eaduje znalost kl\u00ed\u010dov\u00e9ho p\u00e1ru (je t\u0159eba b\u00fdt explicitn\u00edm \u00fa\u010dastn\u00edkem skupiny), ale retransmise m\u016f\u017ee prob\u00edhat jak\u00fdmkoli uzlem.\n<li class=\"l\"> Byla zaveden\u00e1 podpora explicitn\u00edho potvrzen\u00ed p\u0159\u00edjmu paketu. Odes\u00edlatel nemus\u00ed paket mazat po odesl\u00e1n\u00ed, ale m\u016f\u017ee \u010dekat na zvl\u00e1\u0161tn\u00ed ACK paket od p\u0159\u00edjemce.\n<li class=\"l\"> Byla integrov\u00e1na podpora overlay s\u00edt\u011b Yggdrasil: online d\u00e9moni mohou fungovat jako plnohodnotn\u00ed samostatn\u00ed \u00fa\u010dastn\u00edci s\u00edt\u011b, bez pou\u017eit\u00ed alternativn\u00edch implementac\u00ed Yggdrasil a plnohodnotn\u00e9 pr\u00e1ce s IP z\u00e1sobn\u00edkem na virtu\u00e1ln\u00edm s\u00ed\u0165ov\u00e9m rozhran\u00ed.\n<li class=\"l\"> Nam\u00edsto strukturovan\u00fdch \u0159et\u011bzc\u016f (RFC 3339) pou\u017e\u00edv\u00e1 den\u00edk z\u00e1znamy recfile, s nimi\u017e lze pou\u017e\u00edvat n\u00e1stroje GNU Recutils.\n<li class=\"l\"> Voliteln\u011b mohou hlavi\u010dky \u0161ifrovan\u00fdch paket\u016f b\u00fdt uchov\u00e1v\u00e1ny v samostatn\u00fdch souborech v podadres\u00e1\u0159i \u201ehdr\/\u201c, co\u017e v\u00fdrazn\u011b zrychluje operace z\u00edsk\u00e1v\u00e1n\u00ed seznamu paket\u016f na souborov\u00fdch syst\u00e9mech s velkou velikost\u00ed bloku, jako je ZFS. D\u0159\u00edve z\u00edsk\u00e1n\u00ed hlavi\u010dky paketu vy\u017eadovalo \u010dten\u00ed cel\u00e9ho 128KiB bloku z disku jako v\u00fdchoz\u00ed.\n<li class=\"l\"> Kontrola p\u0159\u00edtomnosti nov\u00fdch soubor\u016f m\u016f\u017ee voliteln\u011b vyu\u017e\u00edvat subsyst\u00e9my j\u00e1dra kqueue a inotify, co\u017e sni\u017euje po\u010det syst\u00e9mov\u00fdch vol\u00e1n\u00ed.\n<li class=\"l\"> N\u00e1stroje dr\u017e\u00ed m\u00e9n\u011b otev\u0159en\u00fdch soubor\u016f, \u010dast\u011bji doch\u00e1z\u00ed k jejich uzav\u0159en\u00ed a znovuotev\u0159en\u00ed. P\u0159i velk\u00e9m po\u010dtu paket\u016f bylo d\u0159\u00edve mo\u017en\u00e9 narazit na omezen\u00ed maxim\u00e1ln\u00edho po\u010dtu otev\u0159en\u00fdch soubor\u016f.\n<li class=\"l\"> Mnoho p\u0159\u00edkaz\u016f za\u010dalo ukazovat pokrok a rychlost prov\u00e1d\u011bn\u00ed operac\u00ed, jako je stahov\u00e1n\u00ed\/vys\u00edl\u00e1n\u00ed, kop\u00edrov\u00e1n\u00ed a zpracov\u00e1n\u00ed (toss) paket\u016f.\n<li class=\"l\"> P\u0159\u00edkaz \u201enncp-file\u201c m\u016f\u017ee odes\u00edlat nejen jednotliv\u00e9 soubory, ale tak\u00e9 adres\u00e1\u0159e, p\u0159i\u010dem\u017e na m\u00edst\u011b vytv\u00e1\u0159\u00ed archiv pax s jejich obsahem.\n<li class=\"l\"> Online n\u00e1stroje mohou voliteln\u011b ihned spustit proces zpracov\u00e1n\u00ed paket\u016f (tossing) po \u00fasp\u011b\u0161n\u00e9m sta\u017een\u00ed paketu, bez spu\u0161t\u011bn\u00ed samostatn\u00e9ho d\u00e9mona \u201enncp-toss\u201c.\n<li class=\"l\"> Online vyvol\u00e1n\u00ed jin\u00e9ho \u00fa\u010dastn\u00edka m\u016f\u017ee voliteln\u011b nastat nejen na z\u00e1klad\u011b ud\u00e1losti aktivace \u010dasova\u010de, ale tak\u00e9 na z\u00e1klad\u011b skute\u010dn\u00e9ho v\u00fdskytu vych\u00e1zej\u00edc\u00edho paketu v spool adres\u00e1\u0159i.\n<li class=\"l\"> Funk\u010dnost je zaji\u0161t\u011bna pod opera\u010dn\u00edmi syst\u00e9my NetBSD a OpenBSD, krom\u011b d\u0159\u00edve podporovan\u00fdch FreeBSD a GNU\/Linux.\n<li class=\"l\"> \u201enncp-daemon\u201c je pln\u011b kompatibiln\u00ed s rozhran\u00edm UCSPI-TCP. V kombinaci s mo\u017enost\u00ed protokolov\u00e1n\u00ed do zadan\u00e9ho popisova\u010de souboru (nap\u0159\u00edklad nastaven\u00edm \u201eNNCPLOG=FD:4\u201c) je pln\u011b p\u0159\u00e1telsk\u00fd pro spu\u0161t\u011bn\u00ed pod n\u00e1stroji podobn\u00fdmi daemontools.\n<li class=\"l\"> Sestaven\u00ed projektu bylo pln\u011b p\u0159evedeno na syst\u00e9m redo.  <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57771\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node-to-Node CoPy (NNCP), \u043d\u0430\u0431\u043e\u0440\u0430 \u0443\u0442\u0438\u043b\u0438\u0442 \u0434\u043b\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0444\u0430\u0439\u043b\u043e\u0432, \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u043e\u0439 \u043f\u043e\u0447\u0442\u044b \u0438 \u043a\u043e\u043c\u0430\u043d\u0434 \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 store-and-forward. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0440\u0430\u0431\u043e\u0442\u0430 \u043d\u0430 POSIX-\u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445. \u0423\u0442\u0438\u043b\u0438\u0442\u044b \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u044b \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Go \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u044e\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv3. \u0423\u0442\u0438\u043b\u0438\u0442\u044b \u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043d\u0430 \u043f\u043e\u043c\u043e\u0449\u044c \u0432 \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u0438 \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u043e\u0434\u043d\u043e\u0440\u0430\u043d\u0433\u043e\u0432\u044b\u0445 friend-to-friend \u0441\u0435\u0442\u0435\u0439 (\u0434\u044e\u0436\u0438\u043d\u044b \u0443\u0437\u043b\u043e\u0432) \u0441\u043e \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0434\u043b\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0444\u0430\u0439\u043b\u043e\u0432 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-105078","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node-to-Node CoPy (NNCP), \u043d\u0430\u0431\u043e\u0440\u0430 \u0443\u0442\u0438\u043b\u0438\u0442 \u0434\u043b\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0444\u0430\u0439\u043b\u043e\u0432, \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u043e\u0439 \u043f\u043e\u0447\u0442\u044b \u0438 \u043a\u043e\u043c\u0430\u043d\u0434 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