{"id":2261,"date":"2024-11-10T12:39:25","date_gmt":"2024-11-10T09:39:25","guid":{"rendered":"https:\/\/www.beratarikan.com.tr\/?p=2261"},"modified":"2024-11-10T12:39:27","modified_gmt":"2024-11-10T09:39:27","slug":"dns-nedir-nasil-calisir-nasil-degistirilir","status":"publish","type":"post","link":"https:\/\/www.beratarikan.com.tr\/index.php\/2024\/11\/10\/dns-nedir-nasil-calisir-nasil-degistirilir\/","title":{"rendered":"DNS Nedir? Nas\u0131l \u00c7al\u0131\u015f\u0131r? Nas\u0131l De\u011fi\u015ftirilir?"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" width=\"1024\" height=\"585\" data-src=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/dns-nedir-nasil-calisir-nasil-degistirilir-1024x585.jpg\" alt=\"\" class=\"wp-image-2271\" srcset=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/dns-nedir-nasil-calisir-nasil-degistirilir-1024x585.jpg 1024w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/dns-nedir-nasil-calisir-nasil-degistirilir-300x171.jpg 300w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/dns-nedir-nasil-calisir-nasil-degistirilir-768x439.jpg 768w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/dns-nedir-nasil-calisir-nasil-degistirilir-1536x878.jpg 1536w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/dns-nedir-nasil-calisir-nasil-degistirilir.jpg 1750w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u0130nternetin karma\u015f\u0131k d\u00fcnyas\u0131nda DNS kritik bir rol oynar. Bir web sitesine eri\u015fece\u011finizi d\u00fc\u015f\u00fcn\u00fcn. Taray\u0131c\u0131n\u0131za yazd\u0131\u011f\u0131n\u0131z adreslerin arka planda nas\u0131l IP adreslerine d\u00f6n\u00fc\u015ft\u00fcr\u00fcld\u00fc\u011f\u00fcn\u00fc hi\u00e7 merak etti\u011fniz oldu mu? DNS, bu s\u00fcrecin tam olarak kalbinde yer al\u0131r ve internetin daha kullan\u0131c\u0131 dostu ve eri\u015filebilir olmas\u0131n\u0131 sa\u011flar. Bu makalede DNS nedir, nas\u0131l \u00e7al\u0131\u015f\u0131r ve nas\u0131l de\u011fi\u015ftirilir gibi konulara de\u011finece\u011fiz.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"h-dns-nedir\">DNS Nedir?<\/h1>\n\n\n\n<p>DNS, \u0130ngilizce\u2019de \u201cDomain Name System\u201d kelimesinin k\u0131salt\u0131lm\u0131\u015f halidir ve internetin telefon rehberi olarak da tan\u0131mlanabilir. Bilgisayarlar IP adresleri arac\u0131l\u0131\u011f\u0131yla birbirleriyle ileti\u015fim kurar ancak insanlar i\u00e7in bu adresleri hat\u0131rlamak zordur. DNS asl\u0131nda bunun i\u00e7in vard\u0131r ve xx.xxx.xx.xx gibi formata sahip public IP adreslerini&nbsp;codit.com.tr&nbsp;gibi daha hat\u0131rlanabilir adreslere \u00e7evirir.<\/p>\n\n\n\n<p>DNS sistemi ilk olarak 1983 y\u0131l\u0131nda Paul Mockapetris taraf\u0131ndan geli\u015ftirilmi\u015ftir. \u0130nternetin b\u00fcy\u00fcmesi ve daha fazla cihaz\u0131n a\u011fa kat\u0131lmas\u0131yla IP adreslerinin hat\u0131rlanmas\u0131 zorla\u015ft\u0131\u011f\u0131 i\u00e7in DNS bu ihtiyac\u0131 kar\u015f\u0131lamak \u00fczere olu\u015fturulmu\u015ftur.<\/p>\n\n\n\n<p>DNS, internetin do\u011fru ve h\u0131zl\u0131 bir \u015fekilde \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flar. Web sitelerine eri\u015fim, e-posta g\u00f6nderimi ve di\u011fer internet hizmetleri DNS sayesinde kesintisiz \u00e7al\u0131\u015f\u0131r. DNS kavram\u0131 olmad\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnecek olursak, her web sitesine ula\u015fmak i\u00e7in karma\u015f\u0131k IP adreslerini ezberlemek zorunda kalacakt\u0131k.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-dns-nasil-calisir\">DNS Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h3>\n\n\n\n<p>Bir web sitesine eri\u015fmek istedi\u011finizde taray\u0131c\u0131n\u0131za domain ad\u0131n\u0131 yazars\u0131n\u0131z. Taray\u0131c\u0131, DNS sunucular\u0131na bir sorgu g\u00f6nderir ve bu sorgu \u015fu ad\u0131mlar\u0131 i\u00e7erir:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Taray\u0131c\u0131n\u0131n g\u00f6nderdi\u011fi ilk sorguyu DNS Recursor (DNS \u00e7\u00f6z\u00fcc\u00fc) sunucusu al\u0131r. Bu sunucu, gerekli bilgiyi bulmak i\u00e7in di\u011fer DNS sunucular\u0131yla ileti\u015fime ge\u00e7er.<\/li>\n\n\n\n<li>DNS Recursor sunucusu sorgu i\u00e7in \u00f6ncelikle Root Nameserver ad\u0131 verilen sunucuya ba\u015fvurur. K\u00f6k sunucular ise TLD (\u00fcst d\u00fczey domain) sunucular\u0131na y\u00f6nlendirme yapar.<\/li>\n\n\n\n<li>TLD Nameserver, belirli bir TLD\u2019ye (.com, .org, .net) ait olan sunucudur ve ilgili alan ad\u0131n\u0131 bar\u0131nd\u0131ran authoritative nameserver\u2019a y\u00f6nlendirir.<\/li>\n\n\n\n<li>Authoritative Nameserver (yetkili ad sunucusu), sorgulanan domain ad\u0131n\u0131n ip adresini i\u00e7eren nihai sunucudur. Bu IP adresi \u00e7\u00f6z\u00fcc\u00fcye iletilir ve taray\u0131c\u0131, siteye eri\u015fimi sa\u011flam\u0131\u015f olur.\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-dns-kayit-turleri\">DNS Kay\u0131t T\u00fcrleri<\/h3>\n\n\n\n<p>DNS kay\u0131tlar\u0131, farkl\u0131 t\u00fcrde bilgileri bar\u0131nd\u0131r\u0131r. Yayg\u0131n DNS kay\u0131t t\u00fcrleri \u015funlard\u0131r:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A Kayd\u0131 (Address Record): Bir domain ad\u0131n\u0131 bir Ipv4 adresine e\u015fler.<\/li>\n\n\n\n<li>AAAA Kayd\u0131: Bir domain ad\u0131n\u0131 bir Ipv6 adresine e\u015fler.<\/li>\n\n\n\n<li>CNAME Kayd\u0131(Canonical Name Record): Bir domain ad\u0131n\u0131 ba\u015fka bir domain ad\u0131na y\u00f6nlendirir.<\/li>\n\n\n\n<li>MX Kayd\u0131 (Mail Exchange Record): E-posta sunucular\u0131n\u0131 tan\u0131mlar.<\/li>\n\n\n\n<li>TXT Kayd\u0131: Alan hakk\u0131nda a\u00e7\u0131klama veya do\u011frulama bilgisi i\u00e7erir.\u00a0<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-dns-cache-onbellek\">DNS Cache (\u00d6nbellek)<\/h3>\n\n\n\n<p>DNS \u00f6nbelle\u011fi, DNS sorgular\u0131n\u0131n daha h\u0131zl\u0131 yan\u0131tlanmas\u0131n\u0131 sa\u011flar. \u00c7\u00f6z\u00fcc\u00fcler ve taray\u0131c\u0131lar, s\u0131k kullan\u0131lan DNS kay\u0131tlar\u0131n\u0131 \u00f6nbellekte saklar ve b\u00f6ylece tekrar tekrar sorgulama yapmadan h\u0131zl\u0131 eri\u015fim sa\u011flar. Ancak, \u00f6nbellekteki bilgiler bazen g\u00fcncellenmeyebilir ve bu da eri\u015fim sorunlar\u0131na yol a\u00e7abilir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-dns-nasil-degistirilir-neden-degistirilir\">DNS Nas\u0131l De\u011fi\u015ftirilir? Neden De\u011fi\u015ftirilir?<\/h3>\n\n\n\n<p>DNS sunucular\u0131n\u0131 de\u011fi\u015ftirmek, \u00e7e\u015fitli nedenlerle yap\u0131labilir. Baz\u0131 yayg\u0131n nedenler \u015funlard\u0131r:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Baz\u0131 DNS sunucular\u0131 di\u011ferlerinden daha h\u0131zl\u0131 internet eri\u015fimi sa\u011flar.<\/li>\n\n\n\n<li>G\u00fcvenli DNS sunucular\u0131, k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlara ve phishing sald\u0131r\u0131lar\u0131na kar\u015f\u0131 ek koruma sa\u011flayabilir.<\/li>\n\n\n\n<li>Belli bir b\u00f6lgedeki sans\u00fcrleri veya eri\u015fim k\u0131s\u0131tlamalar\u0131n\u0131 a\u015fmak i\u00e7in DNS de\u011fi\u015ftirme yap\u0131labilir.\u00a0<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-windows-dns-degistirme\">Windows DNS De\u011fi\u015ftirme<\/h4>\n\n\n\n<p>Windows DNS de\u011fi\u015ftirme Windows\u2019un aray\u00fcz\u00fc sayesinde daha kolay bir hal almaktad\u0131r. Bunun i\u00e7in \u00f6ncelikle klavye k\u0131sayollar\u0131ndan Windows tu\u015fu + R kombinasyonlar\u0131 kullan\u0131larak Run (\u00c7al\u0131\u015ft\u0131r) a\u00e7\u0131l\u0131r.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img width=\"744\" height=\"427\" data-src=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-12.png\" alt=\"\" class=\"wp-image-2262\" srcset=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-12.png 744w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-12-300x172.png 300w\" sizes=\"(max-width: 744px) 100vw, 744px\" \/><\/figure>\n\n\n\n<p>Ve A\u00e7 k\u0131sm\u0131na&nbsp;<strong>ncpa.cpl&nbsp;<\/strong>yaz\u0131l\u0131r ve Enter\u2019a bas\u0131larak A\u011f Ba\u011flant\u0131lar\u0131 a\u00e7\u0131l\u0131r.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img width=\"945\" height=\"499\" data-src=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-18.png\" alt=\"\" class=\"wp-image-2268\" srcset=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-18.png 945w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-18-300x158.png 300w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-18-768x406.png 768w\" sizes=\"(max-width: 945px) 100vw, 945px\" \/><\/figure>\n\n\n\n<p>Ethernet\u2019e t\u0131klan\u0131r.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"564\" height=\"691\" data-src=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-16.png\" alt=\"\" class=\"wp-image-2266\" srcset=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-16.png 564w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-16-245x300.png 245w\" sizes=\"(max-width: 564px) 100vw, 564px\" \/><\/figure>\n\n\n\n<p>\u00d6zellikler\u2019e t\u0131klan\u0131r.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"592\" height=\"759\" data-src=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-19.png\" alt=\"\" class=\"wp-image-2269\" srcset=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-19.png 592w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-19-234x300.png 234w\" sizes=\"(max-width: 592px) 100vw, 592px\" \/><\/figure>\n\n\n\n<p>\u00d6zellikler men\u00fcs\u00fcnden&nbsp;<strong>\u0130nternet Protokol S\u00fcr\u00fcm 4(TCP\/IPv4)<\/strong>&nbsp;se\u00e7ene\u011fi t\u0131klan\u0131r.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"717\" height=\"855\" data-src=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-20.png\" alt=\"\" class=\"wp-image-2270\" srcset=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-20.png 717w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-20-252x300.png 252w\" sizes=\"(max-width: 717px) 100vw, 717px\" \/><\/figure>\n\n\n\n<p>DNS sunucusu e\u011fer otomatik olarak al\u0131n\u0131yorsa DNS sunucu adresini otomatik olarak al se\u00e7ene\u011fi i\u015faretlidir. Manuel olarak girmek i\u00e7in&nbsp;<strong>A\u015fa\u011f\u0131daki DNS sunucu adreslerini kullan:&nbsp;<\/strong>se\u00e7ene\u011fi se\u00e7ilerek ilgili alanlara ilgili DNS adresleri yaz\u0131l\u0131r. (\u00d6rn: 8.8.8.8, 8.8.4.4) Sonras\u0131nda Tamam denilerek ilgili ekranlar kapat\u0131l\u0131r ve Windows DNS de\u011fi\u015ftirme i\u015flemi tamamlanm\u0131\u015f olur.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-linux-dns-degistirme\">Linux DNS De\u011fi\u015ftirme<\/h4>\n\n\n\n<p>Linux dns de\u011fi\u015ftirme i\u015flemi i\u00e7in e\u011fer desktop s\u00fcr\u00fcm\u00fc bir distro kullan\u0131yorsan\u0131z aray\u00fczden internet ayarlar\u0131ndan de\u011fi\u015ftirmeniz olduk\u00e7a kolay. Ancak server s\u00fcr\u00fcm\u00fc kullan\u0131yorsan\u0131z yararlanaca\u011f\u0131n\u0131z baz\u0131 komutlar olacak. Linux dns de\u011fi\u015ftirme i\u015flemini bu makalede Ubuntu 22.04 Live Server s\u00fcr\u00fcm\u00fc \u00fczerinde yapaca\u011f\u0131z. \u00d6ncelikle dns de\u011fi\u015ftirme i\u00e7in root kullan\u0131c\u0131s\u0131nda olman\u0131z gerekiyor. Bunun i\u00e7in&nbsp;<strong>sudo su&nbsp;<\/strong>komutunu kullanmal\u0131s\u0131n\u0131z.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"945\" height=\"84\" data-src=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-14.png\" alt=\"\" class=\"wp-image-2264\" srcset=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-14.png 945w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-14-300x27.png 300w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-14-768x68.png 768w\" sizes=\"(max-width: 945px) 100vw, 945px\" \/><\/figure>\n\n\n\n<p><strong>cd \/etc\/netplan&nbsp;<\/strong>komutuyla netplan dizinine girdikten sonra nano edit\u00f6r\u00fc arac\u0131l\u0131\u011f\u0131yla 00-installer-config.yaml dosyas\u0131n\u0131 a\u00e7man\u0131z gerekiyor. Yani&nbsp;<strong>nano 00-installer-config.yaml&nbsp;<\/strong>komutunu kullanman\u0131z laz\u0131m.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"945\" height=\"616\" data-src=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-13.png\" alt=\"\" class=\"wp-image-2263\" srcset=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-13.png 945w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-13-300x196.png 300w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-13-768x501.png 768w\" sizes=\"(max-width: 945px) 100vw, 945px\" \/><\/figure>\n\n\n\n<p>Buras\u0131 bizim ethernetimizde tan\u0131mlad\u0131\u011f\u0131m\u0131z ip adresi, gateway ve dns adreslerinin bulundu\u011fu dosya. Burada addresses k\u0131sm\u0131nda istedi\u011finiz dns adresini yazabilirsiniz.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"945\" height=\"695\" data-src=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-15.png\" alt=\"\" class=\"wp-image-2265\" srcset=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-15.png 945w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-15-300x221.png 300w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-15-768x565.png 768w\" sizes=\"(max-width: 945px) 100vw, 945px\" \/><\/figure>\n\n\n\n<p>Ctrl + X kombinasyonlar\u0131na bast\u0131ktan sonra Yes diyerek dosyay\u0131 kaydedin.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"945\" height=\"73\" data-src=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-17.png\" alt=\"\" class=\"wp-image-2267\" srcset=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-17.png 945w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-17-300x23.png 300w, https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/image-17-768x59.png 768w\" sizes=\"(max-width: 945px) 100vw, 945px\" \/><\/figure>\n\n\n\n<p>Sonras\u0131nda&nbsp;<strong>netplan apply&nbsp;<\/strong>dedi\u011finizde linux dns de\u011fi\u015ftirme i\u015flemi ba\u015far\u0131l\u0131 bir \u015fekilde tamamlanm\u0131\u015f olacakt\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-dns-guvenligi-nedir\">DNS G\u00fcvenli\u011fi Nedir?<\/h3>\n\n\n\n<p>DNS (Domain Name Server) g\u00fcvenli\u011fi, internet kullan\u0131c\u0131lar\u0131n\u0131n web sitelerine g\u00fcvenli bir \u015fekilde eri\u015fim sa\u011flamalar\u0131n\u0131 ama\u00e7layan bir dizi protokol, politika ve teknolojiyi i\u00e7erir. DNS, alan adlar\u0131n\u0131 IP adreslerine \u00e7evirir, bu da taray\u0131c\u0131n\u0131za bir web sitesini y\u00fcklemek i\u00e7in gerekli olan adresi sa\u011flar. Bu i\u015flemin g\u00fcvenli ve do\u011fru bir \u015fekilde yap\u0131lmas\u0131n\u0131 sa\u011flamak, \u00e7evrimi\u00e7i varl\u0131\u011f\u0131n b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc ve gizlili\u011fini korumak i\u00e7in kritik \u00f6neme sahiptir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-dns-guvenliginin-onemi\">DNS G\u00fcvenli\u011finin \u00d6nemi<\/h3>\n\n\n\n<p>DNS g\u00fcvenli\u011fi, internetin temel i\u015fleyi\u015finin g\u00fcvenli\u011fini sa\u011flar. Bir DNS sald\u0131r\u0131s\u0131, kullan\u0131c\u0131lar\u0131n sahte veya k\u00f6t\u00fc niyetli web sitelerine y\u00f6nlendirilmesine yol a\u00e7abilir, bu da veri ihlallerine, kimlik h\u0131rs\u0131zl\u0131\u011f\u0131na ve di\u011fer siber su\u00e7lara neden olabilir. G\u00fcvenli bir DNS sistemi, kullan\u0131c\u0131lar\u0131n ger\u00e7ek web sitelerine eri\u015fti\u011finden emin olur ve k\u00f6t\u00fc niyetli faaliyetlere kar\u015f\u0131 koruma sa\u011flar. Ayr\u0131ca, i\u015fletmelerin itibar\u0131n\u0131 korur ve kullan\u0131c\u0131 g\u00fcvenini s\u00fcrd\u00fcr\u00fcr.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-dns-saldiri-cesitleri-nelerdir\">DNS Sald\u0131r\u0131 \u00c7e\u015fitleri Nelerdir?<\/h3>\n\n\n\n<p>DNS\u2019e y\u00f6nelik bir\u00e7ok sald\u0131r\u0131 t\u00fcrleri bulunmaktad\u0131r. En \u00e7ok yayg\u0131n olarak yap\u0131lan DNS sald\u0131r\u0131lar\u0131 a\u015fa\u011f\u0131daki gibidir:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-dns-spoofing-cache-poisoning\">DNS Spoofing (Cache Poisoning)<\/h4>\n\n\n\n<p>Bu sald\u0131r\u0131 t\u00fcr\u00fcnde, sald\u0131rganlar bir DNS sunucusunun \u00f6nbelle\u011fine sahte bilgi ekler. Bu sahte bilgi, kullan\u0131c\u0131lar\u0131n yanl\u0131\u015f bir IP adresine, genellikle k\u00f6t\u00fc niyetli bir siteye y\u00f6nlendirilmesine neden olur.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-ddos-distributed-denial-of-service\">DDoS (Distributed Denial of Service)<\/h4>\n\n\n\n<p>DDoS sald\u0131r\u0131lar\u0131, bir DNS sunucusunu a\u015f\u0131r\u0131 y\u00fckleyerek hizmetin kesintiye u\u011framas\u0131na neden olur. Bu, kullan\u0131c\u0131lar\u0131n web sitelerine eri\u015fimini engeller ve hizmet kesintilerine yol a\u00e7ar.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-dns-tunneling\">DNS Tunneling<\/h4>\n\n\n\n<p>DNS Tunneling yani DNS t\u00fcnelleme, DNS sorgular\u0131n\u0131 kullanarak veri s\u0131zd\u0131rmak i\u00e7in kullan\u0131lan bir tekniktir. Bu y\u00f6ntemle, sald\u0131rganlar g\u00fcvenlik duvarlar\u0131n\u0131 a\u015farak a\u011f i\u00e7erisinde veri ileti\u015fimi sa\u011flar.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-dns-hijacking\">DNS Hijacking<\/h4>\n\n\n\n<p>Bu sald\u0131r\u0131 t\u00fcr\u00fcnde, DNS sorgular\u0131 y\u00f6nlendirilerek kullan\u0131c\u0131lar sahte veya zararl\u0131 sitelere y\u00f6nlendirilir. DNS Hijacking, genellikle k\u00f6t\u00fc niyetli yaz\u0131l\u0131m veya a\u011f d\u00fczeyinde sald\u0131r\u0131lar yoluyla ger\u00e7ekle\u015ftirilir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-dns-saldirilarina-karsi-alinacak-onlemler-nelerdir\">DNS Sald\u0131r\u0131lar\u0131na Kar\u015f\u0131 Al\u0131nacak \u00d6nlemler Nelerdir?<\/h3>\n\n\n\n<p>DNS sald\u0131r\u0131lar\u0131na kar\u015f\u0131 al\u0131nacak \u00f6nlemleri hem bireysel kullan\u0131c\u0131lar hem de i\u015fletmeler i\u00e7in hayati \u00f6nem ta\u015f\u0131maktad\u0131r. Bu \u00f6nlemler \u015fu \u015fekilde olabilir.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>G\u00fcvenilir DNS sunucular\u0131 kullanmak, sald\u0131r\u0131lara kar\u015f\u0131 ilk savunma hatt\u0131n\u0131 olu\u015fturur. OpenDNS veya Google Public DNS gibi g\u00fcvenli DNS hizmetleri ek g\u00fcvenlik katmanlar\u0131 sa\u011flar.<\/li>\n\n\n\n<li>DNSSEC, DNS bilgilerini dijital imzalarla do\u011frulayarak sahte DNS verilerinin yay\u0131lmas\u0131n\u0131 \u00f6nler. Bu, kullan\u0131c\u0131lar\u0131n do\u011fru ve g\u00fcvenilir bilgilere eri\u015fmesini sa\u011flar.<\/li>\n\n\n\n<li>DNS sunucular\u0131n\u0131n ve ilgili yaz\u0131l\u0131mlar\u0131n d\u00fczenli olarak g\u00fcncellenmesi, bilinen g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131n kapat\u0131lmas\u0131na yard\u0131mc\u0131 olur ve sald\u0131r\u0131lara kar\u015f\u0131 korur.<\/li>\n\n\n\n<li>Firewall ve IDS\/IPS (Intrusion Detection and Prevention Systems) gibi ileri d\u00fczey g\u00fcvenlik \u00e7\u00f6z\u00fcmleri, a\u011f trafi\u011fini izler ve \u015f\u00fcpheli aktiviteleri tespit ederek m\u00fcdahale eder.<\/li>\n\n\n\n<li>Kullan\u0131c\u0131lar\u0131n ve \u00e7al\u0131\u015fanlar\u0131n DNS sald\u0131r\u0131lar\u0131 konusunda e\u011fitilmesi, fark\u0131ndal\u0131\u011f\u0131n art\u0131r\u0131lmas\u0131 ve g\u00fcvenli internet kullan\u0131m\u0131 konusunda biln\u00e7lendirilmesi \u00f6nemlidir. Bu, sosyal m\u00fchendislik sald\u0131r\u0131lar\u0131na kar\u015f\u0131 da koruma sa\u011flar.<\/li>\n\n\n\n<li>Acil durumlarda h\u0131zl\u0131ca geri d\u00f6nebilecek yedekleme ve kurtarma planlar\u0131n\u0131n olu\u015fturulmas\u0131, olas\u0131 sald\u0131r\u0131lardan sonra sistemlerin h\u0131zl\u0131ca eski haline getirilmesini sa\u011flar.\u00a0<\/li>\n<\/ul>\n\n\n\n<p>DNS g\u00fcvenli\u011fi, internetin g\u00fcvenilirli\u011fi ve kullan\u0131c\u0131lar\u0131n korunmas\u0131 i\u00e7in vazge\u00e7ilmezdir. Gerekli \u00f6nlemleri alarak, hem bireysel kullan\u0131c\u0131lar hem de i\u015fletmeler, DNS sald\u0131r\u0131lar\u0131na kar\u015f\u0131 kendilerini etkili bir \u015fekilde koruyabilir.<\/p>\n\n\n\n<p>DNS, internetin bel kemi\u011fini olu\u015fturan ve domain adlar\u0131n\u0131 IP adreslerine \u00e7eviren kritik bir sistemdir. DNS de\u011fi\u015ftirme i\u015flemi, internet deneyiminizi h\u0131zland\u0131rabilir ve g\u00fcvenli\u011finizi art\u0131rabilir. G\u00fcvenilir DNS sunucular\u0131 se\u00e7erek daha h\u0131zl\u0131 ve g\u00fcvenli bir internet deneyimi ya\u015fayabilirsiniz.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0130nternetin karma\u015f\u0131k d\u00fcnyas\u0131nda DNS kritik bir rol oynar. Bir web sitesine eri\u015fece\u011finizi d\u00fc\u015f\u00fcn\u00fcn. Taray\u0131c\u0131n\u0131za yazd\u0131\u011f\u0131n\u0131z adreslerin arka planda nas\u0131l IP adreslerine d\u00f6n\u00fc\u015ft\u00fcr\u00fcld\u00fc\u011f\u00fcn\u00fc hi\u00e7 merak etti\u011fniz oldu mu? DNS, bu s\u00fcrecin tam olarak kalbinde yer al\u0131r ve internetin daha kullan\u0131c\u0131 dostu ve eri\u015filebilir olmas\u0131n\u0131 sa\u011flar. Bu makalede DNS nedir, nas\u0131l \u00e7al\u0131\u015f\u0131r ve nas\u0131l de\u011fi\u015ftirilir gibi konulara <\/p>\n","protected":false},"author":1,"featured_media":2271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"class_list":["post-2261","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dns"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.7 (Yoast SEO v23.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DNS Nedir? Nas\u0131l \u00c7al\u0131\u015f\u0131r? Nas\u0131l De\u011fi\u015ftirilir? - Berat ARIKAN<\/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:\/\/www.beratarikan.com.tr\/index.php\/2024\/11\/10\/dns-nedir-nasil-calisir-nasil-degistirilir\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DNS Nedir? Nas\u0131l \u00c7al\u0131\u015f\u0131r? Nas\u0131l De\u011fi\u015ftirilir?\" \/>\n<meta property=\"og:description\" content=\"\u0130nternetin karma\u015f\u0131k d\u00fcnyas\u0131nda DNS kritik bir rol oynar. Bir web sitesine eri\u015fece\u011finizi d\u00fc\u015f\u00fcn\u00fcn. Taray\u0131c\u0131n\u0131za yazd\u0131\u011f\u0131n\u0131z adreslerin arka planda nas\u0131l IP adreslerine d\u00f6n\u00fc\u015ft\u00fcr\u00fcld\u00fc\u011f\u00fcn\u00fc hi\u00e7 merak etti\u011fniz oldu mu? DNS, bu s\u00fcrecin tam olarak kalbinde yer al\u0131r ve internetin daha kullan\u0131c\u0131 dostu ve eri\u015filebilir olmas\u0131n\u0131 sa\u011flar. Bu makalede DNS nedir, nas\u0131l \u00e7al\u0131\u015f\u0131r ve nas\u0131l de\u011fi\u015ftirilir gibi konulara\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.beratarikan.com.tr\/index.php\/2024\/11\/10\/dns-nedir-nasil-calisir-nasil-degistirilir\/\" \/>\n<meta property=\"og:site_name\" content=\"Berat ARIKAN\" \/>\n<meta property=\"article:published_time\" content=\"2024-11-10T09:39:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-10T09:39:27+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.beratarikan.com.tr\/wp-content\/uploads\/2024\/11\/dns-nedir-nasil-calisir-nasil-degistirilir.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1750\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"berat.arikan\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"berat.arikan\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.beratarikan.com.tr\/index.php\/2024\/11\/10\/dns-nedir-nasil-calisir-nasil-degistirilir\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.beratarikan.com.tr\/index.php\/2024\/11\/10\/dns-nedir-nasil-calisir-nasil-degistirilir\/\"},\"author\":{\"name\":\"berat.arikan\",\"@id\":\"https:\/\/www.beratarikan.com.tr\/#\/schema\/person\/eac1fe0ed03fd8823a3d4e510cde7e75\"},\"headline\":\"DNS Nedir? 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