{"id":69917,"date":"2020-03-31T13:17:40","date_gmt":"2020-03-31T11:17:40","guid":{"rendered":"https:\/\/mwtsolutions.eu\/?p=69917"},"modified":"2024-10-18T08:48:35","modified_gmt":"2024-10-18T06:48:35","slug":"a-windows-ldap-kotelezo-biztonsagi-serulekenyseg-amelyrol-tudnia-kell","status":"publish","type":"post","link":"https:\/\/i.mwtsolutions.eu\/hu\/cikk\/a-windows-ldap-kotelezo-biztonsagi-serulekenyseg-amelyrol-tudnia-kell\/","title":{"rendered":"A Windows LDAP k\u00f6telez\u0151 biztons\u00e1gi s\u00e9r\u00fcl\u00e9kenys\u00e9g, amelyr\u0151l tudnia kell"},"content":{"rendered":"<div class=\"wpb_text_column wpb_content_element \">\n<div class=\"wpb_wrapper\">\n<p>Az \u00fagynevezett LDAP (<em>Lightweight Directory Access Protocol<\/em>), amelyet a c\u00edmt\u00e1rszolg\u00e1ltat\u00f3k haszn\u00e1lnak az adatok hozz\u00e1f\u00e9r\u00e9s\u00e9hez, s amely protokoll a directory szolg\u00e1ltat\u00e1sok el\u00e9r\u00e9s\u00e9t szab\u00e1lyozza, a Windows AD autentik\u00e1ci\u00f3j\u00e1t v\u00e9gzi a felhaszn\u00e1l\u00f3k \u00e9s az alkalmaz\u00e1sok k\u00f6z\u00f6tt.<\/p>\n<\/div>\n<\/div>\n<div class=\"wpb_text_column wpb_content_element \">\n<div class=\"wpb_wrapper\">\n<p>T\u00f6bbf\u00e9le LDAP oper\u00e1ci\u00f3t k\u00fcl\u00f6nb\u00f6ztet\u00fcnk meg:<\/p>\n<\/div>\n<\/div>\n<div class=\"standard-arrow bullet-top\">\n<ul>\n<li><strong>egyszer\u0171s\u00edtett Plain LDAP<\/strong>\u00a0k\u00f6t\u00e9st, amelyben a hiteles\u0151 adatok Cleartext from\u00e1tumban ker\u00fclnek ki a h\u00e1l\u00f3zatra \u00e9s egy\u00e1ltal\u00e1n nem biztons\u00e1gosak;<\/li>\n<li>jel\u00f6letlen\u00a0<strong>Egyszer\u0171 hiteles\u00edt\u00e9si \u00e9s biztons\u00e1gi r\u00e9teg<\/strong>\u00a0(SASL) LDAP k\u00f6t\u00e9s, amely szint\u00e9n nem biztons\u00e1gos;<\/li>\n<li><strong>SASL LDAP<\/strong>\u00a0k\u00f6t\u00e9s, amely al\u00e1\u00edr\u00e1sk\u00f6teles \u00e9s biztons\u00e1gos is;<\/li>\n<li>LDAP titkos\u00edtott \u00e9s biztons\u00e1gos k\u00f6t\u00e9s, a Secure Socket Layer \/ Transport Layer Security-n kerszt\u00fcl,\u00a0<strong>LDAPS Bind<\/strong>.<\/li>\n<\/ul>\n<\/div>\n<div class=\"vc_empty_space\"><\/div>\n<div class=\"wpb_text_column wpb_content_element \">\n<div class=\"wpb_wrapper\">\n<p>A\u00a0<strong>Domain controllerek (DCs)<\/strong>\u00a0az\u00e9rt s\u00e9r\u00fcl\u00e9kenyek gyakran, mert enged\u00e9lyezik az LDAP klienseknek a kommunik\u00e1ci\u00f3t az egyszer\u0171 LDAP k\u00f6t\u00e9seken kereszt\u00fcl, valamint az SASL LDAP-nek is, amely nem ig\u00e9nyel \u201ej\u00f3v\u00e1hagy\u00e1st\u201d. Mik\u00f6zben az egyszer\u0171 LDAP k\u00f6t\u00e9s lehet\u0151v\u00e9 teszi az olyan privilegiz\u00e1lt fi\u00f3kok hiteles\u00edt\u0151 adatainak forgalm\u00e1t, amelyek Cleartext-en kereszt\u00fcl mennek kereszt\u00fcl a h\u00e1l\u00f3zaton, az al\u00e1\u00edratlan SASL LDAP-k\u00f6t\u00e9sek lehet\u0151v\u00e9 teszik, hogy esetleg rosszindulat\u00fa sz\u00e1nd\u00e9kb\u00f3l ezen adatokhoz hozz\u00e1f\u00e9rhessenek a felhaszn\u00e1l\u00f3k \u00e9s a DC k\u00f6z\u00f6tt, vagy esetleg megv\u00e1ltoztass\u00e1k\/m\u00f3dos\u00edtsak azokat, vagy ezt k\u00f6vet\u0151en ak\u00e1r tov\u00e1bb\u00edts\u00e1k \u0151ket. Mindk\u00e9t forgat\u00f3k\u00f6nyv katasztrof\u00e1lis k\u00f6vetkezm\u00e9nyekkel j\u00e1rhat.<\/p>\n<\/div>\n<\/div>\n<div class=\"dt-fancy-separator title-left h4-size style-disabled accent-title-color\">\n<div class=\"dt-fancy-title\">Hogyan vegy\u00fck \u00e9szre a nem biztons\u00e1gos LDAP-ot?<\/div>\n<\/div>\n<div class=\"wpb_text_column wpb_content_element \">\n<div class=\"wpb_wrapper\">\n<p>A biztons\u00e1gi r\u00e9s megsz\u00fcntet\u00e9s\u00e9nek els\u0151 l\u00e9p\u00e9se annak azonos\u00edt\u00e1sa, hogy \u00e9rintett-e \u00d6n, \u00e9s ezt megteheti a 2887-es esem\u00e9nyazonos\u00edt\u00f3 \u00e1ttekint\u00e9s\u00e9vel.<\/p>\n<p>A 2887-as esem\u00e9ny alap\u00e9rtelmez\u00e9s szerint napl\u00f3z\u00f3dik a DC-ben 24 \u00f3r\u00e1nk\u00e9nt, \u00e9s azt mutatja meg, hogy h\u00e1ny al\u00e1 nem \u00edrt \u00e9s Cleartext sz\u00f6veg kapcsol\u00f3dott a DC-hez. B\u00e1rmely null\u00e1n\u00e1l nagyobb sz\u00e1m azt jelzi, hogy a DC enged\u00e9lyezi a nem biztons\u00e1gos LDAP-k\u00f6t\u00e9seket.<\/p>\n<p>Ezt k\u00f6vet\u0151en, az \u00f6sszes olyan eszk\u00f6zt \u00e9s alkalmaz\u00e1st fel kell ismerni, amelyek a nem biztons\u00e1gos k\u00f6t\u00e9s haszn\u00e1lat\u00e1val, a 2889 esem\u00e9ny-azonos\u00edt\u00f3n kereszt\u00fcl vannak kapcsolatban a DC-vel.<\/p>\n<p>A 2889-es esem\u00e9ny napl\u00f3zza a DC-t minden alkalommal, amikor a \u00fcgyf\u00e9l sz\u00e1m\u00edt\u00f3g\u00e9p megpr\u00f3b\u00e1l hozz\u00e1f\u00e9rni autentik\u00e1ci\u00f3 n\u00e9lk\u00fcl az LDAP-hoz. Ez megjelen\u00edti az IP-c\u00edm\u00e9t \u00e9s a accounthoz tartoz\u00f3 sz\u00e1m\u00edt\u00f3g\u00e9p nev\u00e9t, amely megpr\u00f3b\u00e1lta mag\u00e1t hiteles\u00edteni az LDAP-hoz.<\/p>\n<p>&nbsp;<\/p>\n<p><em>Megjegyz\u00e9s:<\/em>\u00a0Ez az esem\u00e9ny alap\u00e9rtelmez\u00e9s szerint nem ker\u00fcl napl\u00f3z\u00e1sra, ehhez a megfelel\u0151\u00a0<a href=\"https:\/\/support.microsoft.com\/en-in\/help\/314980\/how-to-configure-active-directory-and-lds-diagnostic-event-logging\">diagnosztika enged\u00e9lyez\u00e9se sz\u00fcks\u00e9ges<\/a>.<\/p>\n<\/div>\n<\/div>\n<div class=\"dt-fancy-separator title-left h4-size style-disabled accent-title-color\">\n<div class=\"dt-fancy-title\">Hogyan seg\u00edt az ADAudit Plus a r\u00f6videbb idej\u0171 \u00e9szlel\u00e9sben?<\/div>\n<\/div>\n<div class=\"wpb_text_column wpb_content_element \">\n<div class=\"wpb_wrapper\">\n<p>Egy PowerShell script meg\u00edr\u00e1sa a napl\u00f3zott 2887-es \u00e9s 2889-es esem\u00e9nyek relev\u00e1ns adatainak elemz\u00e9s\u00e9re \u00e9s kinyer\u00e9s\u00e9re kell\u0151 szak\u00e9rtelemet \u00e9s id\u0151t ig\u00e9nyel. ADAudit Plus \u00f6sszegy\u0171jti ezeket a DC-ket a Domainb\u00f3l,\u00e9s jelent\u00e9seket k\u00e9sz\u00edt bel\u0151le r\u00e1mutatva azokra az eszk\u00f6z\u00f6kre \u00e9s alkalmaz\u00e1sokra, amelyek haszn\u00e1lata nem biztons\u00e1gos LDAP k\u00f6t\u00e9st alkalmaz. A jelent\u00e9s r\u00e9szleteiben megmutatja azokat az IP c\u00edmeket, portokat, felhaszn\u00e1l\u00f3neveket k\u00f6t\u00e9seket, amelyek \u00e9rdemes konfigur\u00e1lni az ADAudit Plusban, hogy val\u00f3s riaszt\u00e1sokat kapjunk ezekr\u0151l, ak\u00e1r email, ak\u00e1r SMS-ben arr\u00f3l, hogy autentik\u00e1ci\u00f3s k\u00eds\u00e9rlet zajlik \u00e9ppen egy nem biztons\u00e1gos pontr\u00f3l.<\/p>\n<\/div>\n<\/div>\n<div class=\"wpb_text_column wpb_content_element \">\n<div class=\"wpb_wrapper\">\n<p>Csak n\u00e9h\u00e1ny kattint\u00e1s az ADAudit Plus rendszerben, \u00e9s a DC-k lehet\u0151v\u00e9 teszik a nem biztons\u00e1gos k\u00f6t\u00e9sek meghat\u00e1roz\u00e1s\u00e1t, ez\u00e1ltal k\u00f6nnyen felismerhetj\u00fck az \u00e9rintett \u00e9rz\u00e9keny eszk\u00f6z\u00f6ket, alkalmaz\u00e1sokat.<\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<p><img fetchpriority=\"high\" class=\"alignnone size-full wp-image-69981\" src=\"https:\/\/i.mwtsolutions.eu\/wp-content\/uploads\/2021\/02\/pobrane-1536x685-1.png\" alt=\"\" width=\"1536\" height=\"685\" srcset=\"https:\/\/i.mwtsolutions.eu\/wp-content\/uploads\/2021\/02\/pobrane-1536x685-1.png 1536w, https:\/\/i.mwtsolutions.eu\/wp-content\/uploads\/2021\/02\/pobrane-1536x685-1-300x134.png 300w, https:\/\/i.mwtsolutions.eu\/wp-content\/uploads\/2021\/02\/pobrane-1536x685-1-1024x457.png 1024w, https:\/\/i.mwtsolutions.eu\/wp-content\/uploads\/2021\/02\/pobrane-1536x685-1-768x343.png 768w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><\/p>\n<div class=\"wpb_text_column wpb_content_element \">\n<div class=\"wpb_wrapper\">\n<p>&nbsp;<\/p>\n<p><em>Megjegyz\u00e9s:<\/em>\u00a0Miut\u00e1n minden eszk\u00f6zt \u00e9s alkalmaz\u00e1st \u00e9szlelt az ADAudit Plus-szal, amely a nem biztons\u00e1gos LDAP-k\u00f6t\u00e9s haszn\u00e1lat\u00e1val kapcsol\u00f3dik, gy\u0151z\u0151dj\u00fcnk meg arr\u00f3l,\u00a0<a href=\"https:\/\/portal.msrc.microsoft.com\/en-US\/security-guidance\/advisory\/ADV190023\">hogy ezen LDD-al\u00e1\u00edr\u00e1sok \u00e9s csatorn\u00e1k k\u00f6t\u00e9s\u00e9nek \u00e9rv\u00e9nyes\u00edt\u00e9s\u00e9vel jav\u00edtjuk ezeket a k\u00f6t\u00e9seket (az LDAPS-t biztons\u00e1gosabb\u00e1 teszi)<\/a>.<\/p>\n<\/div>\n<\/div>\n<div class=\"dt-fancy-separator title-left h4-size style-disabled accent-title-color\">\n<div class=\"dt-fancy-title\">ManageEngine ADAudit Plus<\/div>\n<\/div>\n<div class=\"wpb_text_column wpb_content_element \">\n<div class=\"wpb_wrapper\">\n<p>Az ADAudit Plus egy val\u00f3s idej\u0171 Active Directory, file szerver, Windows szerver \u00e9s munka\u00e1llom\u00e1s biztons\u00e1gi \u00e9s megfeleltet\u00e9si megold\u00e1s.<\/p>\n<\/div>\n<\/div>\n<div class=\"wpb_text_column wpb_content_element \">\n<div class=\"wpb_wrapper\">\n<p><a href=\"http:\/\/mwtsolutions.hu\/domain-ellenorzes\/\">Tudjon meg t\u00f6bbet<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Az \u00fagynevezett LDAP (Lightweight Directory Access Protocol), amelyet a c\u00edmt\u00e1rszolg\u00e1ltat\u00f3k haszn\u00e1lnak az adatok hozz\u00e1f\u00e9r\u00e9s\u00e9hez, s amely protokoll a directory szolg\u00e1ltat\u00e1sok el\u00e9r\u00e9s\u00e9t szab\u00e1lyozza, a Windows AD autentik\u00e1ci\u00f3j\u00e1t v\u00e9gzi a felhaszn\u00e1l\u00f3k \u00e9s az alkalmaz\u00e1sok k\u00f6z\u00f6tt. T\u00f6bbf\u00e9le LDAP oper\u00e1ci\u00f3t k\u00fcl\u00f6nb\u00f6ztet\u00fcnk meg: egyszer\u0171s\u00edtett Plain LDAP\u00a0k\u00f6t\u00e9st, amelyben a hiteles\u0151 adatok Cleartext from\u00e1tumban ker\u00fclnek ki a h\u00e1l\u00f3zatra \u00e9s egy\u00e1ltal\u00e1n nem biztons\u00e1gosak; [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":69978,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","om_disable_all_campaigns":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_links_to":"","_links_to_target":""},"categories":[275],"tags":[],"acf":[],"aioseo_notices":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A Windows LDAP k\u00f6telez\u0151 biztons\u00e1gi s\u00e9r\u00fcl\u00e9kenys\u00e9g, amelyr\u0151l tudnia kell - MWT Solutions<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/i.mwtsolutions.eu\/hu\/cikk\/a-windows-ldap-kotelezo-biztonsagi-serulekenyseg-amelyrol-tudnia-kell\/\" \/>\n<meta property=\"og:locale\" content=\"hu_HU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Windows LDAP k\u00f6telez\u0151 biztons\u00e1gi s\u00e9r\u00fcl\u00e9kenys\u00e9g, amelyr\u0151l tudnia kell - MWT Solutions\" \/>\n<meta property=\"og:description\" content=\"Az \u00fagynevezett LDAP (Lightweight Directory Access Protocol), amelyet a c\u00edmt\u00e1rszolg\u00e1ltat\u00f3k haszn\u00e1lnak az adatok hozz\u00e1f\u00e9r\u00e9s\u00e9hez, s amely protokoll a directory szolg\u00e1ltat\u00e1sok el\u00e9r\u00e9s\u00e9t szab\u00e1lyozza, a Windows AD autentik\u00e1ci\u00f3j\u00e1t v\u00e9gzi a felhaszn\u00e1l\u00f3k \u00e9s az alkalmaz\u00e1sok k\u00f6z\u00f6tt. 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