{"id":96270,"date":"2020-10-10T01:42:13","date_gmt":"2020-10-09T23:42:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-ntp-serverov-ntpsec-1-2-0-i-shrony-4-0-s-podderzhkoj-zashhishhyonnogo-protokola-nts"},"modified":"2020-10-10T01:42:13","modified_gmt":"2020-10-09T23:42:13","slug":"vypusk-ntp-serverov-ntpsec-1-2-0-i-shrony-4-0-s-podderzhkoj-zashhishhyonnogo-protokola-nts","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/vypusk-ntp-serverov-ntpsec-1-2-0-i-shrony-4-0-s-podderzhkoj-zashhishhyonnogo-protokola-nts","title":{"rendered":"Megjelentek az NTPsec 1.2.0 \u00e9s a Chrony 4.0 NTP-szerverek, amelyek t\u00e1mogatj\u00e1k a v\u00e9dett NTS protokollt","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Az IETF (Internet Engineering Task Force) bizotts\u00e1g, amely az internet protokolljainak \u00e9s architekt\u00far\u00e1j\u00e1nak fejleszt\u00e9s\u00e9vel foglalkozik, befejezte<\/a><\/noindex> az NTS (Network Time Security) protokoll RFC-j\u00e1nak kidolgoz\u00e1s\u00e1t \u00e9s a kapcsol\u00f3d\u00f3 specifik\u00e1ci\u00f3t a k\u00f6vetkez\u0151 azonos\u00edt\u00f3val tette k\u00f6zz\u00e9 RFC 8915<\/a><\/noindex>. Az RFC «Javasolt szabv\u00e1ny» st\u00e1tuszt kapott, ezt k\u00f6vet\u0151en kezd\u0151dik a munka az RFC v\u00e1zlat standard st\u00e1tusz\u00e1nak (Draft Standard) megszerz\u00e9se \u00e9rdek\u00e9ben, ami t\u00e9nylegesen a protokoll teljes stabiliz\u00e1l\u00e1s\u00e1t \u00e9s az \u00f6sszes megjegyz\u00e9s figyelembev\u00e9tel\u00e9t jelenti. <\/p>\n

Az NTS standardiz\u00e1l\u00e1sa fontos l\u00e9p\u00e9s a pontos id\u0151szinkroniz\u00e1l\u00f3 szolg\u00e1ltat\u00e1sok biztons\u00e1g\u00e1nak n\u00f6vel\u00e9s\u00e9re \u00e9s a felhaszn\u00e1l\u00f3k v\u00e9delm\u00e9re az olyan t\u00e1mad\u00e1sokkal szemben, amelyek hamis NTP szerverhez val\u00f3 csatlakoz\u00e1st c\u00e9loznak. A kiberb\u0171n\u00f6z\u0151k \u00e1ltal v\u00e9gzett tev\u00e9k\u00e9nys\u00e9gek, amelyek helytelen id\u0151 be\u00e1ll\u00edt\u00e1s\u00e1val kapcsolatosak, m\u00e1s id\u0151t figyelembe vev\u0151 protokollok, p\u00e9ld\u00e1ul a TLS biztons\u00e1g\u00e1nak megzavar\u00e1s\u00e1ra is felhaszn\u00e1lhat\u00f3k. P\u00e9ld\u00e1ul az id\u0151 megv\u00e1ltoztat\u00e1sa a TLS tan\u00fas\u00edtv\u00e1nyok \u00e9rv\u00e9nyess\u00e9g\u00e9nek t\u00e9ves \u00e9rtelmez\u00e9s\u00e9hez vezethet. Eddig az NTP \u00e9s a szimmetrikus titkos\u00edt\u00e1si kommunik\u00e1ci\u00f3s csatorn\u00e1k nem tett\u00e9k lehet\u0151v\u00e9 annak garant\u00e1l\u00e1s\u00e1t, hogy a kliens a c\u00e9lzott, nem manipul\u00e1lt NTP szerverrel l\u00e9p kapcsolatba, \u00e9s a kulcsalap\u00fa hiteles\u00edt\u00e9s nem terjedt el, mivel t\u00fal bonyolult volt a be\u00e1ll\u00edt\u00e1sa.<\/p>\n

Az NTS ny\u00edlt kulcs\u00fa infrastrukt\u00fara (PKI) elemeit haszn\u00e1lja, \u00e9s lehet\u0151v\u00e9 teszi a TLS \u00e9s az AEAD (Hiteles\u00edtett Titkos\u00edt\u00e1s Kapcsolt Adatokkal) haszn\u00e1lat\u00e1t az NTP (Network Time Protocol) protokollon kereszt\u00fcl a kliens \u00e9s a szerver k\u00f6z\u00f6tti interakci\u00f3 kriptogr\u00e1fiai v\u00e9delm\u00e9re. Az NTS k\u00e9t k\u00fcl\u00f6n protokollt tartalmaz: az NTS-KE (NTS Kulcsmeghat\u00e1roz\u00e1s a TLS-en kereszt\u00fcli kezdeti hiteles\u00edt\u00e9s \u00e9s kulcsp\u00e1rok egyeztet\u00e9s\u00e9re) \u00e9s az NTS-EF (NTS Kiterjeszt\u00e9si Mez\u0151k, amely a id\u0151szinkroniz\u00e1s session titkos\u00edt\u00e1s\u00e1\u00e9rt \u00e9s hiteles\u00edt\u00e9s\u00e9\u00e9rt felel\u0151s). Az NTS kiterjesztett mez\u0151ket ad a NTP csomagokhoz, \u00e9s minden \u00e1llapotinform\u00e1ci\u00f3t csak az \u00fcgyf\u00e9l oldal\u00e1n t\u00e1rol, cookie \u00e1tad\u00e1si mechanizmust haszn\u00e1lva. Az NTS protokollon kereszt\u00fcli kapcsolatok kezel\u00e9s\u00e9re a 4460-as h\u00e1l\u00f3zati portot jel\u00f6lt\u00e9k ki.<\/p>\n

\"Megjelentek<\/a><\/noindex><\/center><\/p>\n

Az NTS szabv\u00e1nyos\u00edtott els\u0151 megval\u00f3s\u00edt\u00e1sai a napokban k\u00f6zz\u00e9tett verzi\u00f3kban javasoltak NTPsec 1.2.0<\/a><\/noindex> \u00e9s \u0421hrony 4.0<\/a><\/noindex>. \u0421hrony<\/a><\/noindex> f\u00fcggetlen NTP kliens- \u00e9s szervermegval\u00f3s\u00edt\u00e1st k\u00edn\u00e1l, amely a pontos id\u0151 szinkroniz\u00e1l\u00e1s\u00e1ra szolg\u00e1l k\u00fcl\u00f6nb\u00f6z\u0151 Linux disztrib\u00faci\u00f3kban, bele\u00e9rtve a Fedora, Ubuntu, SUSE\/openSUSE \u00e9s RHEL\/CentOS rendszereket. NTPsec<\/a><\/noindex> Go nyelven fejl\u0151dik.<\/a><\/noindex> Eric Raymond vezet\u00e9s\u00e9vel a projekt a NTPv4 (NTP Classic 4.3.34) protokoll referenciakivitelez\u00e9s\u00e9nek forkja, amely a k\u00f3dalap \u00e1tdolgoz\u00e1s\u00e1ra \u00f6sszpontos\u00edt a biztons\u00e1g n\u00f6vel\u00e9se \u00e9rdek\u00e9ben (elavult k\u00f3d elt\u00e1vol\u00edt\u00e1sa, t\u00e1mad\u00e1smegel\u0151z\u0151 m\u00f3dszerek alkalmaz\u00e1sa \u00e9s v\u00e9dett funkci\u00f3k bevezet\u00e9se a mem\u00f3ri\u00e1val \u00e9s a karakterl\u00e1ncokkal val\u00f3 munk\u00e1hoz).<\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u0438\u0442\u0435\u0442 IETF (Internet Engineering Task Force), \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435\u043c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 \u0438 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430, \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u043b \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 RFC \u0434\u043b\u044f \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 NTS (Network Time Security) \u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0443\u044e \u0441 \u043d\u0438\u043c \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044e \u043f\u043e\u0434 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u043e\u043c RFC 8915. RFC \u043f\u043e\u043b\u0443\u0447\u0438\u043b \u0441\u0442\u0430\u0442\u0443\u0441 «\u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430», \u043f\u043e\u0441\u043b\u0435 \u0447\u0435\u0433\u043e \u043d\u0430\u0447\u043d\u0451\u0442\u0441\u044f \u0440\u0430\u0431\u043e\u0442\u0430 \u043f\u043e \u043f\u0440\u0438\u0434\u0430\u043d\u0438\u044e RFC \u0441\u0442\u0430\u0442\u0443\u0441\u0430 \u0447\u0435\u0440\u043d\u043e\u0432\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430 (Draft Standard), \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u043e\u0437\u043d\u0430\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u043b\u043d\u0443\u044e \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u0438 \u0443\u0447\u0451\u0442 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":96271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-96270","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47 Az NTPsec 1.2.0 \u00e9s a Chrony 4.0 kiad\u00e1sa, amely t\u00e1mogatja a v\u00e9dett NTS protokollt | ProHoster","description":"Az IETF (Internet Engineering Task Force) bizotts\u00e1g, amely az internet protokolljainak \u00e9s architekt\u00far\u00e1j\u00e1nak fejleszt\u00e9s\u00e9vel foglalkozik, 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