{"id":54460,"date":"2019-12-26T00:00:00","date_gmt":"2019-12-25T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/dostupna-sistema-glubokogo-inspektirovaniya-paketov-ndpi-3-0"},"modified":"2020-02-18T14:02:28","modified_gmt":"2020-02-18T11:02:28","slug":"dostupna-sistema-glubokogo-inspektirovaniya-paketov-ndpi-3-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/dostupna-sistema-glubokogo-inspektirovaniya-paketov-ndpi-3-0","title":{"rendered":"Dostupn\u00fd syst\u00e9m hlubok\u00e9 inspekce paket\u016f nDPI 3.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Projekt <noindex><a rel=\"nofollow\" href=\"https:\/\/www.ntop.org\/\">ntop<\/a><\/noindex>, vyv\u00edjej\u00edc\u00ed n\u00e1stroje pro zachyt\u00e1v\u00e1n\u00ed a anal\u00fdzu provozu,  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/ntop\/nDPI\/releases\/tag\/3.0\">vydal<\/a><\/noindex> vyd\u00e1n\u00ed n\u00e1stroj\u016f pro hloubkovou inspekci paket\u016f <noindex><a rel=\"nofollow\" href=\"https:\/\/www.ntop.org\/products\/deep-packet-inspection\/ndpi\/\">nDPI 3.0<\/a><\/noindex>, pokra\u010duj\u00edc\u00ed ve v\u00fdvoji knihovny <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=23341\">OpenDPI<\/a><\/noindex>. Projekt nDPI byl zalo\u017een po ne\u00fasp\u011b\u0161n\u00e9 snaze o p\u0159enos zm\u011bn do <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/thomasbhatia\/OpenDPI\">repuzit\u00e1\u0159e<\/a><\/noindex> OpenDPI, kter\u00fd z\u016fstal bez \u00fadr\u017eby. K\u00f3d nDPI je naps\u00e1n v jazyce C a <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/ntop\/nDPI\/\">distribuov\u00e1no<\/a><\/noindex> pod licenc\u00ed LGPLv3.<\/p>\n<p>Projekt <noindex><a rel=\"nofollow\" href=\"https:\/\/www.ntop.org\/wp-content\/uploads\/2013\/12\/nDPI_QuickStartGuide.pdf\">umo\u017e\u0148uje<\/a><\/noindex> identifikovat v provozu pou\u017e\u00edvan\u00e9 protokoly na \u00farovni aplikace, analyzov\u00e1n\u00edm povahy s\u00ed\u0165ov\u00e9 aktivity bez vazby na s\u00ed\u0165ov\u00e9 porty (m\u016f\u017ee identifikovat zn\u00e1m\u00e9 protokoly, jejich\u017e zpracovatel\u00e9 p\u0159ij\u00edmaj\u00ed p\u0159ipojen\u00ed na nestandardn\u00edch s\u00ed\u0165ov\u00fdch portech, nap\u0159\u00edklad pokud se http poskytuje na jin\u00e9m portu ne\u017e 80, nebo naopak, kdy\u017e se n\u011bjak\u00e1 jin\u00e1 s\u00ed\u0165ov\u00e1 aktivita sna\u017e\u00ed maskovat pod http spu\u0161t\u011bn\u00edm na portu 80).  <\/p>\n<p>Rozd\u00edly oproti OpenDPI spo\u010d\u00edvaj\u00ed v podpo\u0159e dal\u0161\u00edch protokol\u016f, portov\u00e1n\u00ed pro platformu Windows, optimalizaci v\u00fdkonu, p\u0159izp\u016fsoben\u00ed pro pou\u017eit\u00ed v aplikac\u00edch pro monitorov\u00e1n\u00ed provozu v re\u00e1ln\u00e9m \u010dase (byly odstran\u011bny n\u011bkter\u00e9 specifick\u00e9 funkce, kter\u00e9 zpomalovaly vykon\u00e1v\u00e1n\u00ed),<br \/>\nmo\u017enosti sestaven\u00ed ve form\u011b modulu j\u00e1dra Linux a podpo\u0159e identifikace subprotokol\u016f. <\/p>\n<p>Celkem podporuje identifikaci 238 protokol\u016f a aplikac\u00ed, od<br \/>\nOpenVPN, Tor, QUIC, SOCKS, BitTorrent a IPsec a\u017e po Telegram,<br \/>\nViber, WhatsApp, PostgreSQL a dotazy na GMail, Office365,<br \/>\nGoogleDocs a YouTube. Disponuje dekod\u00e9rem serverov\u00fdch a klientsk\u00fdch SSL certifik\u00e1t\u016f, kter\u00fd umo\u017e\u0148uje identifikovat protokol (nap\u0159\u00edklad Citrix Online a Apple iCloud) za pou\u017eit\u00ed \u0161ifrovac\u00edho certifik\u00e1tu. Pro anal\u00fdzu obsahu pcap dump\u016f nebo aktu\u00e1ln\u00edho provozu p\u0159es s\u00ed\u0165ov\u00e9 rozhran\u00ed je dod\u00e1v\u00e1na utilita nDPIreader.<\/p>\n<p>  $ .\/nDPIreader -i eth0 -s 20 -f \u00abhost 192.168.1.10\u00bb<\/p>\n<p>   Zji\u0161t\u011bn\u00e9 protokoly:<br \/>\n   DNS                  pakety: 57    bajty: 7904     toky: 28<br \/>\n   SSL_No_Cert          pakety: 483   bajty: 229203   toky: 6<br \/>\n   FaceBook             pakety: 136   bajty: 74702    toky: 4<br \/>\n   DropBox              pakety: 9     bajty: 668      toky: 3<br \/>\n   Skype                pakety: 5     bajty: 339      toky: 3<br \/>\n   Google               pakety: 1700  bajty: 619135   toky: 34<\/p>\n<p>V nov\u00e9m vyd\u00e1n\u00ed:<\/p>\n<ul>\n<li class=\"l\"> Informace o protokolu se nyn\u00ed zobrazuje okam\u017eit\u011b p\u0159i detekci, ani\u017e by bylo t\u0159eba \u010dekat na \u00fapln\u00e9 metadatov\u00e9 informace (dokonce i tehdy, kdy\u017e konkr\u00e9tn\u00ed pole je\u0161t\u011b nebyla rozlo\u017eena kv\u016fli neobdr\u017een\u00ed odpov\u00eddaj\u00edc\u00edch s\u00ed\u0165ov\u00fdch paket\u016f), co\u017e je relevantn\u00ed pro analyz\u00e1tory provozu, kter\u00e9 mus\u00ed okam\u017eit\u011b reagovat na ur\u010dit\u00e9 druhy provozu. Pro aplikace, kter\u00e9 pot\u0159ebuj\u00ed \u00fapln\u00e9 rozlo\u017een\u00ed protokolu, byl navr\u017een API ndpi_extra_dissection_possible(), kter\u00fd umo\u017e\u0148uje zajistit, \u017ee v\u0161echna metadata protokolu jsou definov\u00e1na.\n<li class=\"l\"> Bylo realizov\u00e1no podrobn\u011bj\u0161\u00ed rozlo\u017een\u00ed TLS s extrakc\u00ed \u00fadaj\u016f o platnosti certifik\u00e1tu a SHA-1 hash certifik\u00e1tu.\n<li class=\"l\"> Do aplikace nDPIreader byla p\u0159id\u00e1na volba \u00ab-C\u00bb pro export do form\u00e1tu CSV, co\u017e umo\u017e\u0148uje pou\u017eit\u00ed dodate\u010dn\u00e9ho n\u00e1stroje ntop. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.ntop.org\/ndpi\/how-to-use-ndpi-from-cli-to-analyse-network-traffic\/\">prov\u00e1d\u011bt<\/a><\/noindex> dostate\u010dn\u011b slo\u017eit\u00e9 statistick\u00e9 vzorkov\u00e1n\u00ed. Nap\u0159\u00edklad pro ur\u010den\u00ed IP u\u017eivatele, kter\u00fd nejd\u00e9le sledoval filmy na NetFlix:\n<p>   $ ndpiReader -i netflix.pcap -C \/tmp\/netflix.csv<br \/>\n   $ q -H -d \u2018,\u2019 \u00abselect src_ip,SUM(src2dst_bytes+dst2src_bytes) from \/tmp\/netflix.csv where ndpi_proto like \u2018%NetFlix%\u2019 group by src_ip\u00bb<\/p>\n<p>  192.168.1.7,6151821<\/p>\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora navr\u017een\u00e1 v <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cisco\/joy\">Cisco Joy<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/blogs.cisco.com\/security\/detecting-encrypted-malware-traffic-without-decryption\">technice<\/a><\/noindex> definice \u0161kodliv\u00e9 aktivity skryt\u00e9 v \u0161ifrovan\u00e9m provozu pomoc\u00ed anal\u00fdzy velikosti paket\u016f a doby odesl\u00e1n\u00ed\/zpo\u017ed\u011bn\u00ed. V ndpiReader se tato metoda aktivuje volbou \u00ab-J\u00bb.\n<li class=\"l\"> Byla zaji\u0161t\u011bna klasifikace protokol\u016f podle kategori\u00ed.\n<li class=\"l\"> P\u0159id\u00e1na podpora pro v\u00fdpo\u010det IAT (Inter-Arrival Time) pro ur\u010den\u00ed anom\u00e1li\u00ed v pou\u017e\u00edv\u00e1n\u00ed protokolu, nap\u0159\u00edklad pro odhalen\u00ed pou\u017e\u00edv\u00e1n\u00ed protokolu p\u0159i prov\u00e1d\u011bn\u00ed DoS \u00fatok\u016f.\n<li class=\"l\"> Byly p\u0159id\u00e1ny mo\u017enosti anal\u00fdzy dat na z\u00e1klad\u011b po\u010d\u00edtan\u00fdch metrik, jako je entropie, pr\u016fm\u011br, sm\u011brodatn\u00e1 odchylka a rozptyl.\n<li class=\"l\"> Byla navr\u017eena po\u010d\u00e1te\u010dn\u00ed verze binding\u016f pro jazyk Python.\n<li class=\"l\"> Byl p\u0159id\u00e1n re\u017eim identifikace \u010diteln\u00fdch \u0159et\u011bzc\u016f v provozu pro odhalov\u00e1n\u00ed \u00fanik\u016f dat. V<br \/>\nRe\u017eim ndpiReader se spou\u0161t\u00ed volbou \u00ab-e\u00bb.<\/p>\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora metody identifikace TLS klient\u016f <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/salesforce\/ja3\">JA3<\/a><\/noindex>, kter\u00e1 umo\u017e\u0148uje na z\u00e1klad\u011b zvl\u00e1\u0161tnost\u00ed vyjedn\u00e1v\u00e1n\u00ed p\u0159ipojen\u00ed a zadan\u00fdch parametr\u016f ur\u010dit, jak\u00fd software se pou\u017e\u00edv\u00e1 pro nav\u00e1z\u00e1n\u00ed spojen\u00ed (nap\u0159\u00edklad umo\u017e\u0148uje ur\u010dit pou\u017eit\u00ed Tor a dal\u0161\u00edch typov\u00fdch aplikac\u00ed).\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora metod identifikace implementac\u00ed SSH (<noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/salesforce\/hassh\">HASSH<\/a><\/noindex>) a DHCP.\n<li class=\"l\"> Byly p\u0159id\u00e1ny funkce pro serializaci a deserializaci dat ve<br \/>\nform\u00e1tech Type-Length-Value (TLV) a JSON.<\/p>\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora protokol\u016f a slu\u017eeb: DTLS (TLS p\u0159es UDP),<br \/>\n    Hulu,<br \/>\n    TikTok\/Musical.ly,<br \/>\n    WhatsApp Video,<br \/>\n    DNSoverHTTPS,<br \/>\n    Datasaver,<br \/>\n    Line,<br \/>\n    Google Duo, Hangout,<br \/>\n    WireGuard VPN,<br \/>\n    IMO,<br \/>\n    Zoom.us.<\/p>\n<li class=\"l\"> Byla vylep\u0161ena podpora anal\u00fdzy TLS, SIP, STUN,<br \/>\n        Viber,<br \/>\n        WhatsApp,<br \/>\n        AmazonVideo,<br \/>\n        SnapChat,<br \/>\n        FTP,<br \/>\n        QUIC<br \/>\n        OpenVPN UDP,<br \/>\n        Facebook Messenger a Hangout.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52097\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u043e\u0435\u043a\u0442 ntop, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b \u0434\u043b\u044f \u0437\u0430\u0445\u0432\u0430\u0442\u0430 \u0438 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0442\u0440\u0430\u0444\u0438\u043a\u0430, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0432\u044b\u043f\u0443\u0441\u043a \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f \u0434\u043b\u044f \u0433\u043b\u0443\u0431\u043e\u043a\u043e\u0433\u043e \u0438\u043d\u0441\u043f\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0430\u043a\u0435\u0442\u043e\u0432 nDPI 3.0, \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u044e\u0449\u0435\u0433\u043e \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 OpenDPI. \u041f\u0440\u043e\u0435\u043a\u0442 nDPI \u043e\u0441\u043d\u043e\u0432\u0430\u043d \u043f\u043e\u0441\u043b\u0435 \u0431\u0435\u0437\u0443\u0441\u043f\u0435\u0448\u043d\u043e\u0439 \u043f\u043e\u043f\u044b\u0442\u043a\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0439 OpenDPI, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043e\u0441\u0442\u0430\u043b\u0441\u044f \u0431\u0435\u0437 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u044f. \u041a\u043e\u0434 nDPI \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438 \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 LGPLv3. \u041f\u0440\u043e\u0435\u043a\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0442\u044c \u0432 \u0442\u0440\u0430\u0444\u0438\u043a\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u044b [&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-54460","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=\"\u041f\u0440\u043e\u0435\u043a\u0442 ntop, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b \u0434\u043b\u044f \u0437\u0430\u0445\u0432\u0430\u0442\u0430 \u0438 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 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