{"id":116409,"date":"2024-06-07T09:39:55","date_gmt":"2024-06-07T07:39:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-openssh-dobavlena-vstroennaya-zashhita-ot-atak-po-podboru-parolej"},"modified":"2024-06-07T09:39:55","modified_gmt":"2024-06-07T07:39:55","slug":"v-openssh-dobavlena-vstroennaya-zashhita-ot-atak-po-podboru-parolej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/v-openssh-dobavlena-vstroennaya-zashhita-ot-atak-po-podboru-parolej","title":{"rendered":"Az OpenSSH-ba be\u00e9p\u00edtett v\u00e9delem ker\u00fclt hozz\u00e1ad\u00e1sra a jelsz\u00f3val val\u00f3 t\u00e1mad\u00e1sok ellen","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Az OpenSSH k\u00f3dalapj\u00e1ba be\u00e9p\u00edtett v\u00e9delmet integr\u00e1ltak az automatiz\u00e1lt jelsz\u00f3felt\u00f6r\u00e9si t\u00e1mad\u00e1sok ellen, amikor a botok megpr\u00f3b\u00e1lj\u00e1k kital\u00e1lni a felhaszn\u00e1l\u00f3 jelszav\u00e1t, k\u00fcl\u00f6nb\u00f6z\u0151 sablonkombin\u00e1ci\u00f3k kipr\u00f3b\u00e1l\u00e1s\u00e1val. Az ilyen t\u00e1mad\u00e1sok blokkol\u00e1s\u00e1ra az sshd_config konfigur\u00e1ci\u00f3s f\u00e1jlhoz hozz\u00e1adt\u00e1k a PerSourcePenalties param\u00e9tert, amely lehet\u0151v\u00e9 teszi a blokkol\u00e1si k\u00fcsz\u00f6b meghat\u00e1roz\u00e1s\u00e1t, amely aktiv\u00e1l\u00f3dik, ha egy IP-c\u00edmr\u0151l t\u00fal sok sikertelen kapcsol\u00f3d\u00e1si k\u00eds\u00e9rlet t\u00f6rt\u00e9nik. Az \u00faj v\u00e9delmi mechanizmus a k\u00f6vetkez\u0151 OpenSSH kiad\u00e1s r\u00e9sze lesz, \u00e9s alap\u00e9rtelmez\u00e9s szerint be lesz kapcsolva az OpenBSD 7.6-ban. <\/p>\n

A v\u00e9delem aktiv\u00e1l\u00e1sakor az sshd folyamata elkezdi nyomon k\u00f6vetni a gyermekk\u00e9pz\u0151 folyamatok befejez\u00e9s\u00e9nek st\u00e1tusz\u00e1t, azon esetek meghat\u00e1roz\u00e1s\u00e1ra, amikor az autentik\u00e1ci\u00f3 nem siker\u00fclt, vagy amikor a folyamat v\u00e1ratlanul le\u00e1llt hiba miatt. A magas szint\u0171 hib\u00e1k az autentik\u00e1ci\u00f3 sor\u00e1n arra utalhatnak, hogy jelsz\u00f3felt\u00f6r\u00e9si k\u00eds\u00e9rletek t\u00f6rt\u00e9nnek, m\u00edg a v\u00e1ratlan le\u00e1ll\u00e1sok sebezhet\u0151s\u00e9gek kihaszn\u00e1l\u00e1si k\u00eds\u00e9rleteire utalhatnak az sshd-ben. <\/p>\n

A PerSourcePenalties param\u00e9ter seg\u00edts\u00e9g\u00e9vel meghat\u00e1rozhat\u00f3 a minim\u00e1lis k\u00fcsz\u00f6b az anom\u00e1lis esem\u00e9nyekre, amelynek t\u00fall\u00e9p\u00e9se ut\u00e1n a gyan\u00fas tev\u00e9kenys\u00e9get mutat\u00f3 IP-c\u00edm blokkol\u00e1sra ker\u00fcl. A PerSourceNetBlockSize param\u00e9ter seg\u00edts\u00e9g\u00e9vel tov\u00e1bbi alh\u00e1l\u00f3zati maszkot is meghat\u00e1rozhatunk, amely lehet\u0151v\u00e9 teszi egy teljes alh\u00e1l\u00f3zat blokkol\u00e1s\u00e1t, amelyhez a probl\u00e9m\u00e1s IP tartozik. <\/p>\n

Egyes alh\u00e1l\u00f3zatok blokkol\u00e1s\u00e1nak letilt\u00e1s\u00e1ra javasolt a PerSourcePenaltyExemptList param\u00e9ter, amely hasznos lehet olyan helyzetekben, amelyek hamis riaszt\u00e1sokhoz vezethetnek, p\u00e9ld\u00e1ul amikor egy nagy h\u00e1l\u00f3zatb\u00f3l \u00e9rkeznek kapcsolatok az SSH szerverhez, \u00e9s a k\u00fcl\u00f6nb\u00f6z\u0151 felhaszn\u00e1l\u00f3k k\u00e9r\u00e9sei azonos IP-c\u00edmr\u0151l \u00e9rkeznek az IP-c\u00edmek \u00e1tkonfigur\u00e1l\u00e1sa vagy proxy haszn\u00e1lata miatt.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043a\u043e\u0434\u043e\u0432\u0443\u044e \u0431\u0430\u0437\u0443 OpenSSH \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0430\u044f \u0437\u0430\u0449\u0438\u0442\u0430 \u043e\u0442 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0430\u0442\u0430\u043a \u043f\u043e \u043f\u043e\u0434\u0431\u043e\u0440\u0443 \u043f\u0430\u0440\u043e\u043b\u0435\u0439, \u0432 \u0445\u043e\u0434\u0435 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0431\u043e\u0442\u044b \u043f\u044b\u0442\u0430\u044e\u0442\u0441\u044f \u0443\u0433\u0430\u0434\u0430\u0442\u044c \u043f\u0430\u0440\u043e\u043b\u044c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f, \u043f\u0435\u0440\u0435\u0431\u0438\u0440\u0430\u044f \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0435 \u0442\u0438\u043f\u043e\u0432\u044b\u0435 \u043a\u043e\u043c\u0431\u0438\u043d\u0430\u0446\u0438\u0438. \u0414\u043b\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0445 \u0430\u0442\u0430\u043a \u0432 \u0444\u0430\u0439\u043b \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0438 sshd_config \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 PerSourcePenalties, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u043f\u043e\u0440\u043e\u0433 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0438, \u0441\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u044e\u0449\u0438\u0439 \u043f\u0440\u0438 \u0431\u043e\u043b\u044c\u0448\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u043d\u0435\u0443\u0434\u0430\u0447\u043d\u044b\u0445 \u043f\u043e\u043f\u044b\u0442\u043e\u043a \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439 \u0441 \u043e\u0434\u043d\u043e\u0433\u043e IP-\u0430\u0434\u0440\u0435\u0441\u0430. \u041d\u043e\u0432\u044b\u0439 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c \u0437\u0430\u0449\u0438\u0442\u044b \u0432\u043e\u0439\u0434\u0451\u0442 \u0432 […]<\/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-116409","post","type-post","status-publish","format-standard","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\udd47Az OpenSSH be\u00e9p\u00edtett v\u00e9delmet kapott a jelsz\u00f3felt\u00f6r\u00e9si t\u00e1mad\u00e1sok ellen | ProHoster","description":"Az OpenSSH k\u00f3dalapj\u00e1ba be\u00e9p\u00edtett v\u00e9delmet integr\u00e1ltak az 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