{"id":122015,"date":"2025-02-20T14:22:14","date_gmt":"2025-02-20T12:22:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-netflow-ipfix-sflow-kollektora-xenoeye-25-02"},"modified":"2025-02-20T14:22:14","modified_gmt":"2025-02-20T12:22:15","slug":"vypusk-netflow-ipfix-sflow-kollektora-xenoeye-25-02","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/vypusk-netflow-ipfix-sflow-kollektora-xenoeye-25-02","title":{"rendered":"A Netflow\/IPFIX\/sFlow gy\u0171jt\u0151 kiad\u00e1sa: Xenoeye 25.02","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Megjelent a Netflow\/IPFIX\/sFlow gy\u0171jt\u0151 Xenoeye 25.02 verzi\u00f3ja. A gy\u0171jt\u0151 lehet\u0151v\u00e9 teszi k\u00fcl\u00f6nb\u00f6z\u0151 h\u00e1l\u00f3zati eszk\u00f6z\u00f6kt\u0151l sz\u00e1rmaz\u00f3 forgalmi statisztik\u00e1k gy\u0171jt\u00e9s\u00e9t, amelyet a Netflow v5, v9, IPFIX \u00e9s sFlow protokollok haszn\u00e1lat\u00e1val k\u00fcldenek, az adatok feldolgoz\u00e1s\u00e1t, jelent\u00e9sek l\u00e9trehoz\u00e1s\u00e1t \u00e9s grafikonok k\u00e9sz\u00edt\u00e9s\u00e9t. A projekt magja C nyelven van meg\u00edrva, a k\u00f3d ISC licenc alatt \u00e9rhet\u0151 el.    <\/p>\n<p>A gy\u0171jt\u0151 aggreg\u00e1lja a h\u00e1l\u00f3zati forgalmat a kiv\u00e1lasztott mez\u0151k szerint, \u00e9s az adatokat PostgreSQL-be export\u00e1lja. Ezekb\u0151l az adatokb\u00f3l jelent\u00e9sek, grafikonok (gnuplot, Python + Matplotlib skriptek haszn\u00e1lat\u00e1val) vagy Grafana ir\u00e1ny\u00edt\u00f3pultok \u00e9p\u00edthet\u0151k. Ezen k\u00edv\u00fcl a gy\u0171jt\u0151 felhaszn\u00e1l\u00f3i skripteket ind\u00edthat, ha a forgalom meghaladja a k\u00fcsz\u00f6b\u00e9rt\u00e9keket, vagy ha a forgalom a k\u00fcsz\u00f6b al\u00e1 esik.   <center><img decoding=\"async\" alt=\"A Netflow\/IPFIX\/sFlow gy\u0171jt\u0151 kiad\u00e1sa: Xenoeye 25.02\" src=\"\/wp-content\/uploads\/2025\/02\/14036e9ad0314171ccf650634a98353e.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>A forgalom aktu\u00e1lis sebess\u00e9g\u00e9nek sz\u00e1m\u00edt\u00e1s\u00e1hoz mozg\u00f3 \u00e1tlagokat haszn\u00e1lnak. A k\u00fcsz\u00f6b\u00e9rt\u00e9kek figyel\u00e9s\u00e9re szolg\u00e1l\u00f3 mechanizmus c\u00e9lja, hogy \u00e9rtes\u00edt\u00e9seket adjon DoS\/DDoS t\u00e1mad\u00e1sokr\u00f3l, \u00e9s aktiv\u00e1lja a forgalom visszaszor\u00edt\u00e1s\u00e1t BGP-bejelent\u00e9sekkel (Flowspec vagy Blackhole). A gy\u0171jt\u0151h\u00f6z egy Telegram-bot p\u00e9ldascriptje is j\u00e1r, amely \u00e9rtes\u00edt\u00e9seket k\u00fcldhet a messengerbe anom\u00e1li\u00e1k eset\u00e9n. A gy\u0171jt\u0151 nem ig\u00e9nyel sok er\u0151forr\u00e1st, k\u00e9pes kis h\u00e1l\u00f3zatok forgalm\u00e1t kezelni Raspberry\/Orange Pi-on vagy 2-4 GB RAM-mal rendelkez\u0151 virtu\u00e1lis g\u00e9pen.      <\/p>\n<p>\u00dajdons\u00e1gok az \u00faj verzi\u00f3ban:  <\/p>\n<ul>\n<li class=\"l\"> Hozz\u00e1adva az sFlow protokoll t\u00e1mogat\u00e1sa, amely lehet\u0151v\u00e9 teszi a h\u00e1l\u00f3zati csomagok tartalm\u00e1nak (payload) feldolgoz\u00e1s\u00e1t \u00e9s a DNS \u00e9s TLS (HTTPS) SNI inform\u00e1ci\u00f3k kiemel\u00e9s\u00e9t. A hostol\u00f3k \u00e9s adatk\u00f6zpont-tulajdonosok ezt a funkci\u00f3t a phishing ellen harcolva, valamint a k\u00f6vetkez\u0151 oldalak \u00e9s webhelyek \u00e9rt\u00e9kel\u00e9s\u00e9re haszn\u00e1lhatj\u00e1k. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/domain\/\"   title=\"domainok\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4065\">domainok<\/a> \u00e9s webhelyek host\u00e1l\u00e1s\u00e1ra a h\u00e1l\u00f3zaton.\n<li class=\"l\"> Bevezett\u00fck a hierarchikus monitoroz\u00f3 objektumok t\u00e1mogat\u00e1s\u00e1t, amelyek lehet\u0151v\u00e9 teszik egyes, nagy sz\u00e1m\u00fa objektummal rendelkez\u0151 konfigur\u00e1ci\u00f3k egyszer\u0171s\u00edt\u00e9s\u00e9t \u00e9s a feldolgoz\u00e1si teljes\u00edtm\u00e9ny jav\u00edt\u00e1s\u00e1t a \"lapos\" monitoroz\u00f3 objektumlist\u00e1hoz k\u00e9pest.\n<li class=\"l\"> Bevezett\u00fck az interf\u00e9szek oszt\u00e1lyoz\u00e1s\u00e1nak lehet\u0151s\u00e9g\u00e9t \u2013 a kiv\u00e1lasztott h\u00e1l\u00f3zati interf\u00e9szek forgalma a routereken vagy switch-eken figyelmen k\u00edv\u00fcl hagyhat\u00f3 vagy speci\u00e1lis m\u00f3don kezelhet\u0151.\n<li class=\"l\"> Hozz\u00e1adva a figyelemmel k\u00eds\u00e9r\u00e9s lehet\u0151s\u00e9ge nemcsak a forgalmi cs\u00facsokra, hanem a k\u00fcsz\u00f6b\u00e9rt\u00e9kek al\u00e1 es\u00e9sekre is, ami hasznos lehet egyes <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/server\/\"   title=\"szerverek\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1750\">szerverek<\/a> szolg\u00e1ltat\u00e1sok figyel\u00e9s\u00e9ben.\n<li class=\"l\"> Lehet\u0151s\u00e9g ny\u00edlt a forgalmi k\u00fcsz\u00f6b\u00f6k m\u00f3dos\u00edt\u00e1s\u00e1ra a gy\u0171jt\u0151 \u00fajraind\u00edt\u00e1sa n\u00e9lk\u00fcl. Ez a mechanizmus olyan helyzetekre lett kifejlesztve, amikor a felhaszn\u00e1l\u00f3k automatikusan sz\u00e1m\u00edtj\u00e1k ki a k\u00fcsz\u00f6b\u00f6ket a kor\u00e1bbi id\u0151szakok statisztik\u00e1ja alapj\u00e1n, \u00e9s id\u0151r\u0151l id\u0151re friss\u00edtik a k\u00fcsz\u00f6b\u00f6ket a gy\u0171jt\u0151ben.\n<li class=\"l\"> Hozz\u00e1adva egy LXC-kont\u00e9ner a gy\u0171jt\u0151 gyors telep\u00edt\u00e9s\u00e9hez \u00e9s tesztel\u00e9s\u00e9hez. A kont\u00e9ner tartalmaz egy gy\u0171jt\u0151t el\u0151re telep\u00edtett megfigyel\u00e9si objektumokkal, PostgreSQL-lal \u00e9s Grafan\u00e1val.  <\/ul>\n<p>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62757\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 Netflow\/IPFIX\/sFlow \u043a\u043e\u043b\u043b\u0435\u043a\u0442\u043e\u0440\u0430 Xenoeye 25.02. \u041a\u043e\u043b\u043b\u0435\u043a\u0442\u043e\u0440 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u0438\u0440\u0430\u0442\u044c \u0441 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0443 \u043e \u043f\u043e\u0442\u043e\u043a\u0430\u0445 \u0442\u0440\u0430\u0444\u0438\u043a\u0430, \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0435\u043c\u0443\u044e \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 Netflow v5, v9, IPFIX \u0438 sFlow, \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0435, \u0433\u0435\u043d\u0435\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043e\u0442\u0447\u0451\u0442\u044b \u0438 \u0441\u0442\u0440\u043e\u0438\u0442\u044c \u0433\u0440\u0430\u0444\u0438\u043a\u0438. \u042f\u0434\u0440\u043e \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421, \u043a\u043e\u0434 \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 ISC. \u041a\u043e\u043b\u043b\u0435\u043a\u0442\u043e\u0440 \u0430\u0433\u0440\u0435\u0433\u0438\u0440\u0443\u0435\u0442 \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u0442\u0440\u0430\u0444\u0438\u043a \u043f\u043e \u0432\u044b\u0431\u0440\u0430\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u044f\u043c \u0438 \u044d\u043a\u0441\u043f\u043e\u0440\u0442\u0438\u0440\u0443\u0435\u0442 \u0434\u0430\u043d\u043d\u044b\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":122016,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-122015","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" 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