{"id":3078,"date":"2024-04-13T08:09:09","date_gmt":"2023-11-11T06:20:01","guid":{"rendered":"https:\/\/www.domaintakip.org\/?p=62"},"modified":"2024-04-13T08:09:09","modified_gmt":"2023-11-11T06:20:01","slug":"dns-nedir","status":"publish","type":"post","link":"https:\/\/mehmetabaci.tr\/?p=3078","title":{"rendered":"DNS Nedir ve Neden \u00d6nemlidir?"},"content":{"rendered":"

DNS (Domain Name System), internetin temel yap\u0131 ta\u015flar\u0131ndan biridir ve internet \u00fczerindeki herhangi bir bilgisayar\u0131n veya sunucunun ad\u0131n\u0131 ve IP adresini e\u015fle\u015ftiren hizmettir. DNS, insanlar\u0131n daha kolay hat\u0131rlayabilece\u011fi alan adlar\u0131 (\u00f6rne\u011fin, “google.com”) ile bilgisayarlar\u0131n anlayabilece\u011fi IP adresleri (\u00f6rne\u011fin, “74.125.224.83”) aras\u0131nda bir \u00e7eviri yapar. DNS, interneti kullan\u0131c\u0131 dostu hale getirir \u00e7\u00fcnk\u00fc kullan\u0131c\u0131lar web sitelerine eri\u015fmek i\u00e7in IP adreslerini ezberlemek zorunda kalmazlar.<\/p>\n

DNS De\u011fi\u015ftirme \u0130\u015flemi Nas\u0131l Yap\u0131l\u0131r?<\/h2>\n

DNS sunucular\u0131 k\u0131sm\u0131n\u0131n\u0131n alt\u0131nda yer alan DNS sunucusunu de\u011fi\u015ftir b\u00f6lmesine t\u0131klayarak DNS de\u011fi\u015ftirilebilmektedir. DNS sunucular\u0131n\u0131 de\u011fi\u015ftirmek istedi\u011finizde, i\u015fletim sistemine g\u00f6re farkl\u0131 ad\u0131mlar izlenebilir. Genellikle \u015fu ad\u0131mlar\u0131 takip edebilirsiniz;<\/p>\n

    \n
  1. Bilgisayar\u0131n\u0131z\u0131n veya cihaz\u0131n\u0131z\u0131n a\u011f ayarlar\u0131na gidin.<\/li>\n
  2. DNS sunucu ayarlar\u0131n\u0131 d\u00fczenlemek i\u00e7in “A\u011f ve \u0130nternet” veya “Ba\u011flant\u0131lar” gibi bir b\u00f6l\u00fcme gidin.<\/li>\n
  3. Mevcut DNS sunucular\u0131n\u0131z\u0131 de\u011fi\u015ftirmek i\u00e7in \u00f6zelle\u015ftirilmi\u015f DNS sunucu adreslerini girin. \u00d6rnek olarak, Google’\u0131n halka a\u00e7\u0131k DNS sunucu adresleri (8.8.8.8 ve 8.8.4.4) yayg\u0131n olarak kullan\u0131l\u0131r.<\/li>\n<\/ol>\n

    \"\"<\/p>\n

    DNS\u2019nin G\u00fcvenli\u011fi Neden \u00d6nemlidir?<\/h2>\n

    Dos<\/strong> ve DDoS\u00a0<\/strong>ad\u0131 verilen sald\u0131r\u0131lar ile DNS hizmetinde aksamalar meydana gelmektedir. Sald\u0131r\u0131lar belirli bir sunucuya veya a\u011fa eri\u015fimi engellemekte ya da tamamen devre d\u0131\u015f\u0131 b\u0131rakmaktad\u0131r. K\u0131s\u0131tlamalar b\u00fcy\u00fck \u015firketlere binlerce dolar kaybettirebilmektedir ve\u00a0DNS\u2019nin \u00f6nemi<\/strong>\u00a0bu gibi durumlarda ortaya \u00e7\u0131kmaktad\u0131r.
    \nDNS t\u00fcnelleme ad\u0131 verilen veri \u00e7alma ama\u00e7l\u0131 DNS sald\u0131r\u0131lar\u0131d\u0131r. Sald\u0131r\u0131larda sald\u0131rganlar\u0131n amac\u0131 sizin i\u00e7in \u00f6zel say\u0131labilecek her t\u00fcrl\u00fc bilgiyi (gizli dosyalar, fikri m\u00fclkiyet, mail vb.) \u00e7almakt\u0131r.<\/p>\n

      \n
    1. DDoS Sald\u0131r\u0131lar\u0131:<\/strong> Da\u011f\u0131t\u0131k Hizmet Engelleme Sald\u0131r\u0131lar\u0131 (DDoS), bir web sitesine veya a\u011fa \u00e7ok say\u0131da sahte trafik g\u00f6ndererek hizmeti aksatabilir veya devre d\u0131\u015f\u0131 b\u0131rakabilir. DNS sunucular\u0131, bu t\u00fcr sald\u0131r\u0131lara kar\u015f\u0131 savunmas\u0131z olabilir.<\/li>\n
    2. Kimlik Sahtecili\u011fi:<\/strong> K\u00f6t\u00fc niyetli ki\u015filer, DNS’yi kullanarak kimlik sahtecili\u011fi yapabilir ve kullan\u0131c\u0131lar\u0131 sahte web sitelerine y\u00f6nlendirebilirler.<\/li>\n
    3. Veri \u00c7alma:<\/strong> DNS t\u00fcnelleme gibi tekniklerle, sald\u0131rganlar gizli bilgileri (\u00f6rne\u011fin, ki\u015fisel dosyalar veya e-postalar) \u00e7alabilirler.<\/li>\n<\/ol>\n

      DNS G\u00fcvenli\u011fi Nas\u0131l Sa\u011flan\u0131r?<\/h2>\n

      DNS hizmetinin g\u00fcvenli\u011fi Domain Name System Security Extensions (DNSSEC) ad\u0131 verilen bir teknoloji ile sa\u011flanmaktad\u0131r. DDoS sald\u0131r\u0131lar\u0131na kar\u015f\u0131 savunma g\u00f6steremez, TCP\/UDP \u015fifreleri DNSSEC taraf\u0131ndan \u015fifrelenmez. Sadece eri\u015fim sa\u011fla\u011f\u0131n\u0131z yerin ger\u00e7ekten var olan bir IP adresi olup olmad\u0131\u011f\u0131n\u0131n kontrol\u00fcn\u00fc sa\u011flamaktad\u0131r. DNS g\u00fcvenli\u011fi sa\u011flamak i\u00e7in a\u015fa\u011f\u0131daki y\u00f6ntemler kullan\u0131labilir;<\/p>\n

        \n
      1. DNSSEC:<\/strong> DNS g\u00fcvenli\u011fini art\u0131rmak i\u00e7in kullan\u0131lan bir teknolojidir. DNSSEC, DNS sorgular\u0131n\u0131n ve yan\u0131tlar\u0131n\u0131n do\u011frulanmas\u0131n\u0131 sa\u011flar ve veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc korur. Ancak, di\u011fer sald\u0131r\u0131 t\u00fcrlerine kar\u015f\u0131 tam bir koruma sa\u011flamaz.<\/li>\n
      2. Firewall ve G\u00fcvenlik Duvarlar\u0131:<\/strong> \u0130yi yap\u0131land\u0131r\u0131lm\u0131\u015f bir g\u00fcvenlik duvar\u0131, DDoS sald\u0131r\u0131lar\u0131na kar\u015f\u0131 koruma sa\u011flayabilir ve zararl\u0131 DNS sorgular\u0131n\u0131 engelleyebilir.<\/li>\n
      3. G\u00fcncel Yaz\u0131l\u0131m:<\/strong> DNS sunucular\u0131n\u0131n ve g\u00fcvenlik yaz\u0131l\u0131mlar\u0131n\u0131n d\u00fczenli olarak g\u00fcncellenmesi \u00f6nemlidir. G\u00fcncellemeler, bilinen g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 kapatmaya yard\u0131mc\u0131 olur.<\/li>\n
      4. G\u00fc\u00e7l\u00fc Kimlik Do\u011frulama:<\/strong> DNS sunucular\u0131na ve y\u00f6neticilere g\u00fc\u00e7l\u00fc kimlik do\u011frulama kullanarak yetkilendirme sa\u011flay\u0131n.<\/li>\n
      5. \u0130zleme ve Analiz:<\/strong> A\u011f trafi\u011fini izlemek ve anormal aktiviteleri tespit etmek i\u00e7in izleme ve analiz ara\u00e7lar\u0131 kullan\u0131n.<\/li>\n<\/ol>\n

        DNS g\u00fcvenli\u011fi, internetin g\u00fcvenilirli\u011fini ve g\u00fcvenli\u011fini art\u0131r\u0131rken, \u00e7e\u015fitli tehditlere kar\u015f\u0131 daha iyi koruma sa\u011flar. DNS y\u00f6neticileri ve internet kullan\u0131c\u0131lar\u0131, DNS g\u00fcvenli\u011fi konular\u0131na dikkat etmelidirler. Site do\u011frulama, SLS \u015fifreleme gibi ba\u015fka denetim katmanlar\u0131 ile birlikte kullan\u0131m DNSSEC teknolojisinin i\u015flevini artt\u0131rmaktad\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"

        DNS (Domain Name System), internetin temel yap\u0131 ta\u015flar\u0131ndan biridir ve internet \u00fczerindeki herhangi bir bilgisayar\u0131n veya sunucunun ad\u0131n\u0131 ve IP adresini e\u015fle\u015ftiren hizmettir.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-3078","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/mehmetabaci.tr\/index.php?rest_route=\/wp\/v2\/posts\/3078","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mehmetabaci.tr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mehmetabaci.tr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mehmetabaci.tr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mehmetabaci.tr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3078"}],"version-history":[{"count":0,"href":"https:\/\/mehmetabaci.tr\/index.php?rest_route=\/wp\/v2\/posts\/3078\/revisions"}],"wp:attachment":[{"href":"https:\/\/mehmetabaci.tr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3078"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mehmetabaci.tr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3078"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mehmetabaci.tr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3078"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}