{"id":13254,"date":"2017-08-10T15:48:46","date_gmt":"2017-08-10T12:48:46","guid":{"rendered":"https:\/\/blog.natro.com\/?p=13254"},"modified":"2019-08-02T14:37:38","modified_gmt":"2019-08-02T11:37:38","slug":"dns-hakkinda-bilmeniz-gereken-4-unsur","status":"publish","type":"post","link":"https:\/\/www.natro.com\/blog\/dns-hakkinda-bilmeniz-gereken-4-unsur\/","title":{"rendered":"DNS Hakk\u0131nda Bilmeniz Gereken 4 Unsur"},"content":{"rendered":"<h4 id=\"dns-nedir\">DNS Nedir?<\/h4>\n<p>DNS kelimesinin a\u00e7\u0131l\u0131m\u0131,<strong> Domain Name System<\/strong>\u2018dir ve internete ba\u011fl\u0131 olan her bilgisayarda bir IP adresi bulunur. Alan adlar\u0131, bu IP adreslerine eri\u015fimi sa\u011flayan ak\u0131lda kal\u0131c\u0131 ve k\u0131sa adreslerdir. \u00d6rne\u011fin; Google.com\u2019a eri\u015fmek istedi\u011finizde asl\u0131nda siz <strong>74.125.224.83<\/strong> no\u2019lu IP adresine eri\u015fim sa\u011flam\u0131\u015f oluyorsunuz. Her web sitenin ayr\u0131 IP adreslerini haf\u0131zam\u0131zda tutman\u0131n ne kadar zor olabilece\u011fini tahmin ediyorsunuzdur. Bu hizmet, tam bu konuda devreye giriyor ve ilgili alan ad\u0131n\u0131n IP adresi kar\u015f\u0131l\u0131\u011f\u0131n\u0131 kay\u0131tl\u0131 tutarak bizi eri\u015fmek istedi\u011fimiz web sitelerin IP\u00a0adreslerini ezberleme zorunlulu\u011fundan kurtar\u0131yor.<\/p>\n<h4 id=\"dns-nasil-degistirilir\">DNS Nas\u0131l De\u011fi\u015ftirilir?<\/h4>\n<p><a href=\"https:\/\/www.natro.com\/musteri\/login?RDIR=\/musteri\/&utm_source=hosting-blog&utm_medium=sayfa&utm_campaign=musteri-paneli&utm_term&utm_content=b1\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Natro.com<\/strong><\/a>\u00a0\u201cM\u00fc\u015fteri Paneli\u201d \u00fczerinden <strong>Alan Ad\u0131 Y\u00f6netimi\u2019<\/strong>ne girdi\u011finizde, a\u00e7\u0131lan alt sekmede <strong>Aktif Alan Adlar\u0131n\u0131z<\/strong> butonuna t\u0131klay\u0131n\u0131z.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-large wp-image-13265\" src=\"https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/1-2-1024x293.png\" alt=\"\" width=\"1024\" height=\"293\" srcset=\"https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/1-2-1024x293.png 1024w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/1-2-300x86.png 300w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/1-2-768x220.png 768w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/1-2-545x156.png 545w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/1-2.png 1187w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p>Aktif <a href=\"https:\/\/www.natro.com\/domain-sorgulama?utm_source=hosting-blog&utm_medium=sayfa&utm_campaign=domain-sorgulama&utm_term&utm_content=b1\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Alan Adlar<\/strong><\/a>\u0131 sayfas\u0131 \u00fczerinden, ilgili alan ad\u0131n\u0131z\u0131n yan\u0131nda bulunan <strong>Y\u00f6net<\/strong> butonu ile alan ad\u0131n\u0131z\u0131n y\u00f6netim paneline ula\u015fabilirsiniz.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-large wp-image-13266\" src=\"https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/2-1-1024x443.png\" alt=\"\" width=\"1024\" height=\"443\" srcset=\"https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/2-1-1024x443.png 1024w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/2-1-300x130.png 300w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/2-1-768x332.png 768w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/2-1-545x236.png 545w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/2-1.png 1352w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p><strong>DNS Sunucular\u0131<\/strong> b\u00f6l\u00fcm\u00fc alt\u0131ndan, mevcut alan ad\u0131 IP y\u00f6nlendirmenizi g\u00f6rebilir ve <strong>DNS Sunucular\u0131n\u0131 De\u011fi\u015ftir<\/strong> k\u0131sm\u0131na t\u0131klay\u0131p DNS g\u00fcncelleme i\u015flemini ger\u00e7ekle\u015ftirebilirsiniz.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-large wp-image-13267\" src=\"https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/3-1-1024x444.png\" alt=\"\" width=\"1024\" height=\"444\" srcset=\"https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/3-1-1024x444.png 1024w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/3-1-300x130.png 300w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/3-1-768x333.png 768w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/3-1-545x237.png 545w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/3-1.png 1348w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h4 id=\"domain-name-system-guvenliginin-onemi\"><strong>Domain Name System<\/strong> G\u00fcvenli\u011finin \u00d6nemi<\/h4>\n<p>Domain Name System<strong>\u00a0<\/strong>altyap\u0131s\u0131na eri\u015fim sa\u011flanamamas\u0131 veya k\u00f6t\u00fc ama\u00e7l\u0131 ki\u015filer taraf\u0131ndan kullan\u0131lmas\u0131 sonucunda hizmetlerin kesilmesi ve aksamas\u0131 olas\u0131 bir durumdur. 2014 y\u0131l\u0131 verilerinin inceleme ve log analizleri, bizlere bu hizmetin k\u00f6t\u00fc ama\u00e7l\u0131 ki\u015filer taraf\u0131ndan \u00e7ok s\u0131k kullan\u0131ld\u0131\u011f\u0131n\u0131 g\u00f6stermektedir. \u201cBu tarz bir sald\u0131r\u0131da neler olabilir ki?\u201d dedi\u011finizi duyar gibiyiz. \u00d6ncelikle; DNS hizmetini aksatma sald\u0131r\u0131s\u0131 olarak bilinen Dos ve <strong><a href=\"https:\/\/www.natro.com\/blog\/ddos-nedir-nasil-korunulabilir\/?utm_source=hosting-blog&utm_medium=sayfa&utm_campaign=ddos-nedir&utm_term&utm_content=b1\" target=\"_blank\" rel=\"noopener noreferrer\">DDoS<\/a> <\/strong>sald\u0131r\u0131lar\u0131 vard\u0131r. Dos ve DDoS DNS sald\u0131r\u0131lar\u0131, bir a\u011f\u0131 tamamen \u00e7evrimd\u0131\u015f\u0131 hale getirebilir, belirli bir sunucuya ya da a\u011fa eri\u015fimi k\u0131s\u0131tlayabilirler. Baz\u0131 b\u00fcy\u00fck kurulu\u015flar bu sald\u0131r\u0131lardan dolay\u0131 saatte binlerce dolar kaybetmi\u015flerdir.<\/p>\n<p>Bir di\u011fer sald\u0131r\u0131 tipi ise; veri h\u0131rs\u0131zl\u0131\u011f\u0131 ama\u00e7l\u0131 yap\u0131lan DNS sald\u0131r\u0131lar\u0131d\u0131r. Bu sald\u0131r\u0131 tipine <strong>DNS T\u00fcnelleme<\/strong> diyebiliriz. Sald\u0131rganlar \u00f6nemli bilgileri, fikri m\u00fclkiyeti, ki\u015fisel bilgileri, e-postalar\u0131, gizli dosyalar\u0131 akl\u0131n\u0131za gelebilecek sizin i\u00e7in \u00f6zel olan her \u015feyi \u00e7almak i\u00e7in kullan\u0131rlar. Her iki sald\u0131r\u0131 tipi de, kurulu\u015flar\u0131n i\u015fleyi\u015fini tamamen bozma potansiyeline sahiptir.<\/p>\n<h4 id=\"domain-name-system-guvenliginin-tarihcesi\"><strong>Domain Name System<\/strong> G\u00fcvenli\u011finin Tarih\u00e7esi<\/h4>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13268\" src=\"https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/4-1.png\" alt=\"\" width=\"650\" height=\"659\" srcset=\"https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/4-1.png 650w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/4-1-296x300.png 296w, https:\/\/www.natro.com\/blog\/wp-content\/uploads\/2017\/08\/4-1-545x553.png 545w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><\/p>\n<h4 id=\"domain-name-system-guvenligini-saglamak\"><strong>Domain Name System\u00a0<\/strong>G\u00fcvenli\u011fini Sa\u011flamak<\/h4>\n<p>Domain Name System Security Extensions yani;\u00a0<strong>DNSSEC<\/strong>, say\u0131sal verilerin dijital ortamdaki imza ile do\u011frulanmas\u0131n\u0131 sa\u011flayan, <strong>Domain Name System<\/strong> g\u00fcvenli\u011fi teknolojisidir. DNSSEC teknolojisinde TCP\/UDP paket trafikleri \u015fifrelenmez, DDoS sald\u0131r\u0131lar\u0131na kar\u015f\u0131 korumaz, kimlik av\u0131 veya sahtecili\u011fi engelleyemez. Sadece eri\u015fim sa\u011flad\u0131\u011f\u0131n\u0131z alan ad\u0131n\u0131n, ger\u00e7ek bir IP adresinin olup olmad\u0131\u011f\u0131 kontrol\u00fc sa\u011flan\u0131r.<\/p>\n<p>Bu kontroller 6 a\u015famadan olu\u015fmaktad\u0131r:<\/p>\n<ul>\n<li>Dijital \u0130mzalar (Digital Signatures)<\/li>\n<li>G\u00fcven Kaynaklar\u0131 (Trust Anchors)<\/li>\n<li>\u0130sim Do\u011frulanm\u0131\u015f Varl\u0131k Reddi (Authenticated Denial of Existence)<\/li>\n<li>B\u00f6lge \u0130mzas\u0131 (Zone Signature)<\/li>\n<li>Domain Name System Security Extensions \u0130stemcileri (DNSSEC Clients)<\/li>\n<li>Ad \u00c7\u00f6z\u00fcmleme Politikas\u0131 Tablosu | NRPT (Name Resolution Policy Table)<\/li>\n<\/ul>\n<p>DNSSEC teknoloji tek ba\u015f\u0131na yeterli olmamakla birlikte, SSL \u015fifreleme ve site do\u011frulama gibi iki fakt\u00f6rl\u00fc kimlik denetim katmanlar\u0131 DNSSEC ile birlikte kullan\u0131lmal\u0131d\u0131r. Bunlar\u0131n yan\u0131 s\u0131ra cloudflare g\u00fcvenlik sistemi ile bir\u00e7ok sald\u0131r\u0131dan korunman\u0131z da m\u00fcmk\u00fcn. Alan ad\u0131n\u0131z ile ilgili analizi; <a href=\"https:\/\/dnssec-analyzer.verisignlabs.com\/\">http:\/\/dnssec-debugger.verisignlabs.com<\/a> adresinden ger\u00e7ekle\u015ftirebilirsiniz.<\/p>\n<p>Bu arada\u00a0Domain Name System \u00f6nbelle\u011fini temizleme ile ilgili daha \u00f6nce yazm\u0131\u015f oldu\u011fumuz yaz\u0131y\u0131 da <strong><a href=\"https:\/\/www.natro.com\/blog\/dns-onbellegi-temizleme\/\" target=\"_blank\" rel=\"noopener noreferrer\">buradan<\/a> <\/strong>okuyup, bilgi alabilirsiniz.<\/p>\n<p>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"DNS Nedir? DNS kelimesinin a\u00e7\u0131l\u0131m\u0131, Domain Name System\u2018dir ve internete ba\u011fl\u0131 olan her bilgisayarda bir IP adresi bulunur.&hellip;\n","protected":false},"author":7,"featured_media":13275,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,28,652],"tags":[],"class_list":{"0":"post-13254","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-genel","8":"category-nasil-yapilir","9":"category-nedir"},"_links":{"self":[{"href":"https:\/\/www.natro.com\/blog\/wp-json\/wp\/v2\/posts\/13254","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.natro.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.natro.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.natro.com\/blog\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.natro.com\/blog\/wp-json\/wp\/v2\/comments?post=13254"}],"version-history":[{"count":0,"href":"https:\/\/www.natro.com\/blog\/wp-json\/wp\/v2\/posts\/13254\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.natro.com\/blog\/wp-json\/wp\/v2\/media\/13275"}],"wp:attachment":[{"href":"https:\/\/www.natro.com\/blog\/wp-json\/wp\/v2\/media?parent=13254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.natro.com\/blog\/wp-json\/wp\/v2\/categories?post=13254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.natro.com\/blog\/wp-json\/wp\/v2\/tags?post=13254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}