{"id":7993,"date":"2025-08-25T15:37:33","date_gmt":"2025-08-25T12:37:33","guid":{"rendered":"https:\/\/www.turkticaret.net\/blog\/?p=7993"},"modified":"2025-08-25T16:00:37","modified_gmt":"2025-08-25T13:00:37","slug":"dnssec-nedir-ne-ise-yarar","status":"publish","type":"post","link":"https:\/\/www.turkticaret.net\/blog\/dnssec-nedir-ne-ise-yarar\/","title":{"rendered":"DNSSEC Nedir? Ne \u0130\u015fe Yarar?"},"content":{"rendered":"<p>DNSSEC nedir sorusuna \u00f6ncelikle DNS&#8217;i a\u00e7\u0131klayarak ba\u015flayabiliriz. \u0130nternet d\u00fcnyas\u0131, milyonlarca farkl\u0131 alan ad\u0131 ve IP adresi aras\u0131nda s\u00fcrekli bir ileti\u015fim kurar. Biz kullan\u0131c\u0131lar yaln\u0131zca taray\u0131c\u0131m\u0131za <strong>\u201cwww.ornekalanadi.com\u201d<\/strong> yaz\u0131p tek t\u0131kla siteye ula\u015f\u0131r\u0131z. Ancak bu kolayl\u0131\u011f\u0131n arkas\u0131nda dev bir sistem vard\u0131r: <strong>DNS (Domain Name System)<\/strong>.<\/p>\n<p>DNS, internetin arka planda i\u015fleyen en temel mekanizmalar\u0131ndan biridir; web sitelerinin isimlerini say\u0131lardan olu\u015fan IP adreslerine \u00e7evirerek kullan\u0131c\u0131lar\u0131n do\u011fru sunucuya ula\u015fmas\u0131n\u0131 sa\u011flar. Ancak bu sistem ilk tasarland\u0131\u011f\u0131nda g\u00fcvenlik \u00f6n planda d\u00fc\u015f\u00fcn\u00fclmedi\u011fi i\u00e7in, tek ba\u015f\u0131na \u00e7al\u0131\u015ft\u0131\u011f\u0131nda baz\u0131 a\u00e7\u0131klar bar\u0131nd\u0131r\u0131r. K\u00f6t\u00fc niyetli ki\u015filer bu a\u00e7\u0131klar\u0131 kullanarak kullan\u0131c\u0131lar\u0131n farkl\u0131, genellikle sahte sitelere y\u00f6nlendirilmesine neden olabilir. \u0130\u015fte bu g\u00fcvenlik bo\u015fluklar\u0131n\u0131 kapatmak i\u00e7in geli\u015ftirilen <strong>DNSSEC (Domain Name System Security Extensions)<\/strong>, DNS sistemine eklenen bir koruma mekanizmas\u0131 olarak, bu t\u00fcr risklerin \u00f6nemli \u00f6l\u00e7\u00fcde \u00f6nlenmesini sa\u011flar.<\/p>\n<h2><strong>DNSSEC Nedir?<\/strong><\/h2>\n<p>DNSSEC, DNS protokol\u00fcne eklenen bir g\u00fcvenlik katman\u0131d\u0131r. Amac\u0131, DNS yan\u0131tlar\u0131n\u0131n do\u011frulu\u011funu ve b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc garanti alt\u0131na almakt\u0131r.<\/p>\n<p>Geleneksel DNS sistemi, temel olarak yaln\u0131zca \u201cbu alan ad\u0131 hangi sunucuya ait?\u201d sorusuna yan\u0131t verir. Yani sadece alan ad\u0131n\u0131 uygun IP adresine \u00e7evirir, ancak bu bilginin ger\u00e7ekten do\u011fru ve de\u011fi\u015ftirilmemi\u015f oldu\u011funu kontrol etmez.<\/p>\n<p>\u0130\u015fte bu zay\u0131fl\u0131k, sald\u0131rganlara b\u00fcy\u00fck bir f\u0131rsat sunar. \u00d6rne\u011fin:<\/p>\n<ul>\n<li>Siz <strong>bankan\u0131z\u0131n sitesine<\/strong> girdi\u011finizi d\u00fc\u015f\u00fcn\u00fcrken, sald\u0131rgan sizi fark ettirmeden sahte bir kopya siteye y\u00f6nlendirebilir.<\/li>\n<li>E-posta giri\u015f bilgileriniz \u00e7al\u0131nabilir.<\/li>\n<li>Kredi kart\u0131 numaran\u0131z ele ge\u00e7irilebilir.<\/li>\n<\/ul>\n<p>DNSSEC, DNS kay\u0131tlar\u0131n\u0131n g\u00fcvenilirli\u011fini sa\u011flamak i\u00e7in her kayd\u0131 dijital imzalarla do\u011frular ve b\u00f6ylece sald\u0131rganlar\u0131n sahte y\u00f6nlendirme yapmas\u0131n\u0131n \u00f6n\u00fcne ge\u00e7er.<\/p>\n<p>K\u0131sacas\u0131 DNSSEC, bir web sitesinin ger\u00e7ekten iddia etti\u011fi alan ad\u0131 olup olmad\u0131\u011f\u0131n\u0131 matematiksel olarak ispat eder.<\/p>\n<h2><strong>DNSSEC Ne \u0130\u015fe Yarar?<\/strong><\/h2>\n<p>DNSSEC\u2019in sa\u011flad\u0131\u011f\u0131 ba\u015fl\u0131ca i\u015flevler \u015funlard\u0131r:<\/p>\n<ol>\n<li><strong> Kimlik Do\u011frulama<\/strong><\/li>\n<\/ol>\n<p>DNSSEC, DNS verilerinin yetkili kaynaktan gelip gelmedi\u011fini ispatlar. B\u00f6ylece sahte DNS kay\u0131tlar\u0131n\u0131n kullan\u0131c\u0131ya ula\u015fmas\u0131n\u0131 engeller.<\/p>\n<ol start=\"2\">\n<li><strong> Veri B\u00fct\u00fcnl\u00fc\u011f\u00fc<\/strong><\/li>\n<\/ol>\n<p>Veriler internet \u00fczerinden ta\u015f\u0131n\u0131rken de\u011fi\u015ftirilebilir. DNSSEC sayesinde, DNS kay\u0131tlar\u0131n\u0131n yolculuk s\u0131ras\u0131nda de\u011fi\u015ftirilmedi\u011fi garanti alt\u0131na al\u0131n\u0131r.<\/p>\n<ol start=\"3\">\n<li><strong> Sald\u0131r\u0131lara Kar\u015f\u0131 Koruma<\/strong><\/li>\n<\/ol>\n<p>DNS spoofing, cache poisoning veya man-in-the-middle gibi sald\u0131r\u0131larla kullan\u0131c\u0131lar\u0131n sahte sitelere y\u00f6nlendirilmesi engellenir.<\/p>\n<ol start=\"4\">\n<li><strong> G\u00fcvenilir \u0130nternet Altyap\u0131s\u0131<\/strong><\/li>\n<\/ol>\n<p>DNSSEC yaln\u0131zca bireysel kullan\u0131c\u0131lar i\u00e7in de\u011fil, internetin genel g\u00fcvenli\u011fi i\u00e7in de kritik \u00f6neme sahiptir. DNS tabanl\u0131 g\u00fcvenlik mekanizmalar\u0131, dijital d\u00fcnyada g\u00fcvenilir bir altyap\u0131n\u0131n temelini olu\u015fturur.<\/p>\n<ol start=\"5\">\n<li><strong> Kullan\u0131c\u0131 G\u00fcveni<\/strong><\/li>\n<\/ol>\n<p>Bir web sitesi DNSSEC kulland\u0131\u011f\u0131nda ziyaret\u00e7ilerin g\u00fcveni artar. \u00d6zellikle e-ticaret ve finans alan\u0131nda bu g\u00fcven do\u011frudan sat\u0131\u015flara ve marka imaj\u0131na katk\u0131 sa\u011flar.<\/p>\n<h2><strong>DNSSEC Olmad\u0131\u011f\u0131nda Kar\u015f\u0131la\u015f\u0131labilecek Riskler<\/strong><\/h2>\n<p>DNSSEC kullan\u0131lmad\u0131\u011f\u0131nda, DNS\u2019in a\u00e7\u0131klar\u0131 sald\u0131rganlar i\u00e7in cazip bir hedef haline gelir. Olas\u0131 senaryolar:<\/p>\n<ul>\n<li><strong>Phishing sald\u0131r\u0131lar\u0131:<\/strong> Sald\u0131rganlar, kullan\u0131c\u0131lar\u0131 g\u00f6r\u00fcn\u00fc\u015fte ger\u00e7ek sitelere benzer sahte web sayfalar\u0131na y\u00f6nlendirir. Bu sayede kullan\u0131c\u0131lar\u0131n \u015fifre, e-posta veya banka bilgileri ele ge\u00e7irilebilir.<\/li>\n<li><strong>Araya girme sald\u0131r\u0131lar\u0131 (Man-in-the-Middle):<\/strong> Sald\u0131rgan, kullan\u0131c\u0131 ile web sitesi aras\u0131ndaki ileti\u015fime gizlice m\u00fcdahale eder ve veri ak\u0131\u015f\u0131n\u0131 de\u011fi\u015ftirebilir veya kopyalayabilir.<\/li>\n<\/ul>\n<ul>\n<li><strong>Kimlik h\u0131rs\u0131zl\u0131\u011f\u0131:<\/strong> Kullan\u0131c\u0131lar\u0131n dijital kimlik bilgileri \u00e7al\u0131nabilir.<\/li>\n<li><strong>Maddi zarar:<\/strong> E-ticaret siteleri ve finans kurulu\u015flar\u0131 i\u00e7in sahte y\u00f6nlendirmeler ciddi kay\u0131plara yol a\u00e7ar.<\/li>\n<\/ul>\n<p>\u00d6rne\u011fin, DNSSEC kullan\u0131lmayan bir banka sitesinde kullan\u0131c\u0131, resmi site yerine sald\u0131rgan\u0131n haz\u0131rlad\u0131\u011f\u0131 kopya siteye y\u00f6nlendirilirse fark\u0131nda olmadan t\u00fcm bilgilerini payla\u015fabilir.<\/p>\n<h2><strong>DNSSEC Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/strong><\/h2>\n<p>DNSSEC\u2019in \u00e7al\u0131\u015fma mant\u0131\u011f\u0131 <strong>a\u00e7\u0131k anahtar \u015fifreleme (public key cryptography)<\/strong> sistemine dayan\u0131r. S\u00fcreci ad\u0131m ad\u0131m inceleyelim:<\/p>\n<ol>\n<li><strong>Alan ad\u0131 sahibi<\/strong>, DNS kay\u0131tlar\u0131n\u0131 \u00f6zel bir anahtarla dijital olarak imzalar.<\/li>\n<li><strong>DNS sunucusu<\/strong>, bu imzalar\u0131 yan\u0131tlarla birlikte g\u00f6nderir.<\/li>\n<li><strong>DNS \u00e7\u00f6z\u00fcmleyici (resolver)<\/strong>, imzalar\u0131 do\u011frulamak i\u00e7in ilgili a\u00e7\u0131k anahtar\u0131 kullan\u0131r.<\/li>\n<li>E\u011fer imza ge\u00e7erliyse kay\u0131t g\u00fcvenilir kabul edilir. Yanl\u0131\u015fsa sahte oldu\u011fu anla\u015f\u0131l\u0131r.<\/li>\n<\/ol>\n<p>Bu do\u011frulama, bir <strong>g\u00fcven zinciri<\/strong> \u015feklinde i\u015fler. Root sunuculardan ba\u015flayarak alan ad\u0131n\u0131n en alt seviyesine kadar t\u00fcm kay\u0131tlar zincirleme olarak do\u011frulan\u0131r.<\/p>\n<h2><strong>Kimler DNSSEC Kullanmal\u0131?<\/strong><\/h2>\n<p>DNSSEC asl\u0131nda t\u00fcm alan ad\u0131 sahipleri i\u00e7in faydal\u0131d\u0131r. Ancak baz\u0131 sekt\u00f6rler i\u00e7in kullan\u0131m\u0131 kritik \u00f6neme sahiptir:<\/p>\n<ul>\n<li><strong>Bankalar ve finans kurulu\u015flar\u0131<\/strong> \u2192 M\u00fc\u015fteri bilgilerinin korunmas\u0131 i\u00e7in<\/li>\n<li><strong>E-ticaret siteleri<\/strong> \u2192 \u00d6deme g\u00fcvenli\u011fini sa\u011flamak i\u00e7in<\/li>\n<li><strong>Kamu kurumlar\u0131<\/strong> \u2192 Resmi belgelerin g\u00fcvenilir bir \u015fekilde ula\u015fmas\u0131 i\u00e7in<\/li>\n<li><strong>Sa\u011fl\u0131k kurulu\u015flar\u0131<\/strong> \u2192 Hasta bilgilerinin gizlili\u011fi i\u00e7in<\/li>\n<li><strong>Kurumsal \u015firketler<\/strong> \u2192 Marka imaj\u0131 ve m\u00fc\u015fteri g\u00fcveni i\u00e7in<\/li>\n<\/ul>\n<h2><strong>DNSSEC\u2019in Avantajlar\u0131<\/strong><\/h2>\n<ul>\n<li>DNS verilerinin b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc korur.<\/li>\n<li>Kullan\u0131c\u0131lar\u0131n sahte sitelere y\u00f6nlendirilmesini engeller.<\/li>\n<li>Marka de\u011ferini ve kullan\u0131c\u0131 g\u00fcvenini art\u0131r\u0131r.<\/li>\n<li>Siber sald\u0131r\u0131lara kar\u015f\u0131 ekstra g\u00fcvenlik sa\u011flar.<\/li>\n<li>\u0130nternet altyap\u0131s\u0131n\u0131n genel g\u00fcvenli\u011fini g\u00fc\u00e7lendirir.<\/li>\n<\/ul>\n<h2><strong>DNSSEC ve SSL\/TLS Fark\u0131<\/strong><\/h2>\n<p>DNSSEC \u00e7o\u011fu zaman SSL\/TLS ile kar\u0131\u015ft\u0131r\u0131l\u0131r. Ancak ikisi farkl\u0131 seviyelerde g\u00fcvenlik sa\u011flar:<\/p>\n<ul>\n<li><strong>DNSSEC:<\/strong> Kullan\u0131c\u0131y\u0131 do\u011fru IP adresine y\u00f6nlendirir, yani <strong>\u201cdo\u011fru siteye gidip gitmedi\u011finizi\u201d<\/strong> garanti eder.<\/li>\n<li><strong>SSL\/TLS:<\/strong> Kullan\u0131c\u0131 ile site aras\u0131ndaki veriyi \u015fifreler, yani <strong>\u201cverilerinizi \u00fc\u00e7\u00fcnc\u00fc ki\u015filerin g\u00f6rememesini\u201d<\/strong> sa\u011flar.<\/li>\n<\/ul>\n<p>En y\u00fcksek g\u00fcvenlik i\u00e7in iki teknolojinin birlikte kullan\u0131lmas\u0131 gerekir.<\/p>\n<p>\u0130nternetin h\u0131zla b\u00fcy\u00fcd\u00fc\u011f\u00fc ve siber sald\u0131r\u0131lar\u0131n giderek daha sofistike hale geldi\u011fi g\u00fcn\u00fcm\u00fczde, g\u00fcvenlik yaln\u0131zca opsiyonel bir \u00f6zellik de\u011fil, zorunluluktur. DNSSEC, DNS sistemine eklenen en \u00f6nemli g\u00fcvenlik katman\u0131d\u0131r ve kullan\u0131c\u0131lar\u0131n sahte sitelere y\u00f6nlendirilmesini engelleyerek interneti daha g\u00fcvenli hale getirir.<\/p>\n<p>E\u011fer bir alan ad\u0131n\u0131z varsa ve \u00f6zellikle finans, e-ticaret veya kamu hizmetleri gibi kritik sekt\u00f6rlerde faaliyet g\u00f6steriyorsan\u0131z, DNSSEC\u2019i kullanmak art\u0131k iste\u011fe ba\u011fl\u0131 bir tercih de\u011fil; dijital varl\u0131\u011f\u0131n\u0131z\u0131 ve kullan\u0131c\u0131 bilgilerinin g\u00fcvenli\u011fini sa\u011flamak i\u00e7in zorunlu bir \u00f6nlem haline gelmi\u015ftir.<\/p>\n<p>Unutmay\u0131n: <strong>SSL sertifikas\u0131 verilerinizi korur, DNSSEC ise sizi do\u011fru adrese g\u00f6t\u00fcr\u00fcr.<\/strong> \u0130kisi birlikte kullan\u0131ld\u0131\u011f\u0131nda internet \u00fczerinde \u00e7ok daha g\u00fcvenli bir deneyim sunar.<\/p>\n<p>Di\u011fer blog yaz\u0131lar\u0131m\u0131za g\u00f6z atmak i\u00e7in <a href=\"https:\/\/www.turkticaret.net\/blog\/\">t\u0131klayabilirsiniz.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>DNSSEC nedir sorusuna \u00f6ncelikle DNS&#8217;i a\u00e7\u0131klayarak ba\u015flayabiliriz. \u0130nternet d\u00fcnyas\u0131, milyonlarca farkl\u0131 alan ad\u0131 ve IP adresi aras\u0131nda s\u00fcrekli bir ileti\u015fim kurar. Biz kullan\u0131c\u0131lar yaln\u0131zca taray\u0131c\u0131m\u0131za \u201cwww.ornekalanadi.com\u201d yaz\u0131p tek t\u0131kla siteye ula\u015f\u0131r\u0131z. Ancak bu kolayl\u0131\u011f\u0131n arkas\u0131nda dev bir sistem vard\u0131r: DNS (Domain Name System). DNS, internetin arka planda i\u015fleyen en temel mekanizmalar\u0131ndan biridir; web sitelerinin isimlerini [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":7995,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[49,51],"tags":[],"_links":{"self":[{"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/posts\/7993"}],"collection":[{"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/comments?post=7993"}],"version-history":[{"count":1,"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/posts\/7993\/revisions"}],"predecessor-version":[{"id":7996,"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/posts\/7993\/revisions\/7996"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/media\/7995"}],"wp:attachment":[{"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/media?parent=7993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/categories?post=7993"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.turkticaret.net\/blog\/wp-json\/wp\/v2\/tags?post=7993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}