{"id":9678,"date":"2017-03-02T15:47:25","date_gmt":"2017-03-02T13:47:25","guid":{"rendered":"https:\/\/ihs.com.tr\/blog\/?p=9678"},"modified":"2017-03-10T10:45:39","modified_gmt":"2017-03-10T08:45:39","slug":"dns-guvenligi-nedir","status":"publish","type":"post","link":"https:\/\/www.ihs.com.tr\/blog\/dns-guvenligi-nedir\/","title":{"rendered":"DNS G\u00fcvenli\u011fi Nedir?"},"content":{"rendered":"<p><span style=\"font-size: 14pt;\"><strong>DNS g\u00fcvenli\u011fi<\/strong> hakk\u0131nda bilgili misiniz? \u201cDNS g\u00fcvenli\u011fine hen\u00fcz gelmedim, daha DNS kal\u0131b\u0131n\u0131n ne oldu\u011funu anlamaya \u00e7al\u0131\u015f\u0131yorum.\u201d diyorsan\u0131z i\u015fe temelden ba\u015flamakta fayda var. DNS tan\u0131m\u0131yla muhtemelen sans\u00fcr uygulanan sitelere eri\u015fmek istedi\u011finizle tan\u0131\u015ft\u0131n\u0131z. Sonra yasakl\u0131 sitelere girmek i\u00e7in <strong>DNS program\u0131<\/strong> indirdiniz ya da DNS ayarlar\u0131n\u0131 de\u011fi\u015ftirme i\u015flemiyle art\u0131k internet \u00f6zg\u00fcrl\u00fc\u011f\u00fcn\u00fc edindi\u011finizi d\u00fc\u015f\u00fcnd\u00fcn\u00fcz. Ger\u00e7ekten de \u00f6yle mi?<\/span><\/p>\n<p><strong><span style=\"font-size: 14pt;\">DNS Nedir, Nas\u0131l De\u011fi\u015ftirilir ve Ne \u0130\u015fe Yarar?<\/span><\/strong><\/p>\n<p><span style=\"font-size: 14pt;\">DNS\u2019i internetin kap\u0131lar\u0131 olarak d\u00fc\u015f\u00fcnebilirsiniz. DNS\u2019in a\u00e7\u0131l\u0131m\u0131 Domain Name System ve bu kal\u0131p da alan ad\u0131 sistemi anlam\u0131na geliyor. \u0130nternette bir sayfaya eri\u015fmek istedi\u011finiz zaman alan adlar\u0131n\u0131 kullan\u0131rs\u0131n\u0131z. \u00d6rne\u011fin <a href=\"https:\/\/www.ihs.com.tr\" target=\"_blank\"><strong>www.ihs.com.tr<\/strong><\/a> gibi. Web taray\u0131c\u0131lar\u0131 ise bu isimler \u00fczerinden de\u011fil de IP adresleri arac\u0131l\u0131\u011f\u0131yla sayfalara ba\u011flan\u0131yorlar. DNS sistemi i\u015fte tam bu noktada \u00e7\u00f6z\u00fcmleyici olarak devreye giriyor. DNS sunucular\u0131, taray\u0131c\u0131lar\u0131n talep etti\u011fi IP adreslerini onlara iletirler. <strong>DNS sunucusu yan\u0131t vermiyor ne demek<\/strong> diye merak ediyorsan\u0131z cevab\u0131 kar\u015f\u0131n\u0131zda: DNS sunucular\u0131n\u0131z belirli bir hata sonucunda IP adreslerini \u00e7\u00f6z\u00fcmleyemiyor ve bu nedenle web sitelerine eri\u015fim sa\u011flayam\u0131yorsunuz.<\/span><\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-9682 size-full\" src=\"https:\/\/www.ihs.com.tr\/blog\/wp-content\/uploads\/2017\/03\/dns.jpg\" alt=\"dns\" width=\"1000\" height=\"667\" srcset=\"https:\/\/www.ihs.com.tr\/blog\/wp-content\/uploads\/2017\/03\/dns.jpg 1000w, https:\/\/www.ihs.com.tr\/blog\/wp-content\/uploads\/2017\/03\/dns-300x200.jpg 300w, https:\/\/www.ihs.com.tr\/blog\/wp-content\/uploads\/2017\/03\/dns-585x390.jpg 585w, https:\/\/www.ihs.com.tr\/blog\/wp-content\/uploads\/2017\/03\/dns-263x175.jpg 263w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p><span style=\"font-size: 14pt;\">DNS sunucular\u0131, web taray\u0131c\u0131lar\u0131nda standart olarak bulunuyor. Ayr\u0131ca DNS ayarlar\u0131n\u0131 de\u011fi\u015ftirmek isteyenler i\u00e7in <strong>Google DNS<\/strong> gibi farkl\u0131 sunucular da var. DNS de\u011fi\u015ftirmek i\u00e7in sunucu bilgilerini edindikten sonra <strong>Denetim Masas\u0131 -&gt; A\u011f ve Payla\u015f\u0131m Merkezi -&gt; Ba\u011flant\u0131lar -&gt; \u00d6zellikler -&gt; \u0130nternet Protokol\u00fc s\u00fcr\u00fcm 4 (TCP\/IPv4)<\/strong> sekmesine t\u0131klaman\u0131z gerekiyor. A\u00e7\u0131lan pencerede DNS sunucu adresini otomatik olarak al kutucu\u011funu i\u015faretlerseniz standart sunucular \u00fczerinden ba\u011flan\u0131rs\u0131n\u0131z. Farkl\u0131 bir DNS sunucusunu kullanmak istiyorsan\u0131z da ilgili alanlar\u0131 doldurman\u0131z gerekiyor. <strong>Yasakl\u0131 sitelere girmek i\u00e7in DNS de\u011fi\u015ftirme<\/strong> i\u015flemi bu kadar basit. Peki, g\u00fcvenli mi?<\/span><\/p>\n<p><strong><span style=\"font-size: 14pt;\">DNS G\u00fcvenli\u011fi<\/span><\/strong><\/p>\n<p><span style=\"font-size: 14pt;\">\u0130nternetteki <strong>DNS adreslerinin<\/strong> hepsi g\u00fcvenli de\u011fil. Neden g\u00fcvenli olmad\u0131klar\u0131n\u0131 \u00f6\u011frenmek i\u00e7in <strong><a href=\"https:\/\/www.ihs.com.tr\/blog\/kotu-amacli-yazilim-davranisi-dns-kayitlarindan-nasil-anlasilir\/\" target=\"_blank\">buraya t\u0131klayabilir<\/a><\/strong> ve ilgili i\u00e7eri\u011fimizi okuyabilirsiniz. \u0130nternetten buldu\u011funuz g\u00fcvenli olmayan DNS adresleri sizi farkl\u0131 IP adreslerine y\u00f6nlendirerek k\u00f6t\u00fc ama\u00e7l\u0131 ki\u015filere hizmet ediyorlar. \u00d6rnek vermek gerekirse Google\u2019a ba\u011fland\u0131\u011f\u0131n\u0131z\u0131 san\u0131rken benzer g\u00f6r\u00fcn\u00fcml\u00fc sahte bir siteye giri\u015f yap\u0131yor olabilirsiniz. Bu sahte sitelerde dolan\u0131rken trojan sald\u0131r\u0131s\u0131na maruz kalarak ki\u015fisel bilgilerinizi \u00e7ald\u0131rabilirsiniz. G\u00fcn\u00fcm\u00fczde, bilgisayarlar\u0131m\u0131zda bulunan ki\u015fisel bilgilerimizi (sosyal medya kullan\u0131c\u0131 hesap bilgilerimiz, banka \u015fifrelerimiz vb.) d\u00fc\u015f\u00fcn\u00fcnce sadece <strong>g\u00fcvenilir DNS adreslerini<\/strong> ya da standartlarla belirlenmi\u015f DNS sunucular\u0131n\u0131 kullanman\u0131n ne kadar \u00f6nemli oldu\u011funu ortaya \u00e7\u0131k\u0131yor.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>DNS g\u00fcvenli\u011fi hakk\u0131nda bilgili misiniz? \u201cDNS g\u00fcvenli\u011fine hen\u00fcz gelmedim, daha DNS kal\u0131b\u0131n\u0131n ne oldu\u011funu anlamaya \u00e7al\u0131\u015f\u0131yorum.\u201d diyorsan\u0131z i\u015fe temelden ba\u015flamakta fayda var.&hellip;<\/p>\n","protected":false},"author":3,"featured_media":9750,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[390,74],"tags":[],"class_list":["post-9678","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kurumsal","category-makaleler"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/9678","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=9678"}],"version-history":[{"count":3,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/9678\/revisions"}],"predecessor-version":[{"id":9700,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/9678\/revisions\/9700"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/media\/9750"}],"wp:attachment":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=9678"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=9678"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=9678"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}