{"id":12,"date":"2026-06-01T12:21:34","date_gmt":"2026-06-01T09:21:34","guid":{"rendered":"https:\/\/secradar.net\/blog\/tls-1-2-1-3-farki\/"},"modified":"2026-06-04T22:45:37","modified_gmt":"2026-06-04T19:45:37","slug":"tls-1-2-1-3-farki","status":"publish","type":"post","link":"https:\/\/secradar.net\/blog\/tls-1-2-1-3-farki\/","title":{"rendered":"TLS 1.2 ve TLS 1.3 Fark\u0131: Eski Protokoller Neden Kapat\u0131lmal\u0131?"},"content":{"rendered":"<p>TLS (Transport Layer Security), internette \u015fifreli ileti\u015fimin standard\u0131d\u0131r. Bug\u00fcn &#8220;SSL&#8221; denildi\u011finde asl\u0131nda TLS kastedilir. Hangi s\u00fcr\u00fcm\u00fc kulland\u0131\u011f\u0131n\u0131z, sitenizin g\u00fcvenli\u011fini do\u011frudan etkiler.<\/p>\n<h2>TLS S\u00fcr\u00fcmlerinin Durumu<\/h2>\n<ul>\n<li><strong>TLS 1.3:<\/strong> En g\u00fcncel ve en g\u00fcvenli s\u00fcr\u00fcm. Daha h\u0131zl\u0131 el s\u0131k\u0131\u015fma, sadele\u015ftirilmi\u015f ve g\u00fcvenli cipher&#8217;lar.<\/li>\n<li><strong>TLS 1.2:<\/strong> H\u00e2l\u00e2 g\u00fcvenli ve yayg\u0131n. Do\u011fru cipher yap\u0131land\u0131rmas\u0131yla g\u00fcvenle kullan\u0131l\u0131r.<\/li>\n<li><strong>TLS 1.0 \/ 1.1:<\/strong> 2021&#8217;de kullan\u0131mdan kald\u0131r\u0131ld\u0131 (RFC 8996). G\u00fcvenlik a\u00e7\u0131klar\u0131 i\u00e7erir, kapat\u0131lmal\u0131d\u0131r.<\/li>\n<li><strong>SSLv3:<\/strong> POODLE sald\u0131r\u0131s\u0131na a\u00e7\u0131k; kesinlikle kapat\u0131lmal\u0131.<\/li>\n<\/ul>\n<h2>TLS 1.3 Neden Daha \u0130yi?<\/h2>\n<p>TLS 1.3, el s\u0131k\u0131\u015fmay\u0131 tek tur (1-RTT) h\u00e2line getirerek ba\u011flant\u0131y\u0131 h\u0131zland\u0131r\u0131r, zay\u0131f ve eski \u015fifreleme algoritmalar\u0131n\u0131 tamamen kald\u0131r\u0131r ve forward secrecy&#8217;yi zorunlu k\u0131lar. Bu, ge\u00e7mi\u015f trafi\u011fin sonradan \u00e7\u00f6z\u00fclememesi anlam\u0131na gelir.<\/p>\n<h2>Eski Protokoller Neden Kapat\u0131lmal\u0131?<\/h2>\n<p>TLS 1.0\/1.1 desteklemek, BEAST ve benzeri sald\u0131r\u0131lara kap\u0131 aralar ve PCI-DSS gibi uyumluluk denetimlerinde ba\u015far\u0131s\u0131zl\u0131\u011fa yol a\u00e7ar. Modern taray\u0131c\u0131lar zaten bu s\u00fcr\u00fcmleri reddeder.<\/p>\n<h2>G\u00fcvenli Yap\u0131land\u0131rma<\/h2>\n<p>Nginx i\u00e7in: <code>ssl_protocols TLSv1.2 TLSv1.3;<\/code>. Cipher listenizi modern profile g\u00f6re ayarlay\u0131n. Yap\u0131land\u0131rman\u0131z\u0131 <a href=\"https:\/\/secradar.net\/tls-check\">TLS g\u00fcvenlik test arac\u0131m\u0131zla<\/a> kontrol edin; desteklenen s\u00fcr\u00fcmleri, zay\u0131f cipher&#8217;lar\u0131 ve harf notunu an\u0131nda g\u00f6r\u00fcn.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TLS (Transport Layer Security), internette \u015fifreli ileti\u015fimin standard\u0131d\u0131r. Bug\u00fcn &#8220;SSL&#8221; denildi\u011finde asl\u0131nda TLS kastedilir. Hangi s\u00fcr\u00fcm\u00fc kulland\u0131\u011f\u0131n\u0131z, sitenizin g\u00fcvenli\u011fini do\u011frudan etkiler. TLS S\u00fcr\u00fcmlerinin Durumu TLS 1.3: En g\u00fcncel ve en g\u00fcvenli s\u00fcr\u00fcm. Daha h\u0131zl\u0131 el s\u0131k\u0131\u015fma, sadele\u015ftirilmi\u015f ve g\u00fcvenli cipher&#8217;lar. TLS 1.2: H\u00e2l\u00e2 g\u00fcvenli ve yayg\u0131n. Do\u011fru cipher yap\u0131land\u0131rmas\u0131yla g\u00fcvenle kullan\u0131l\u0131r. TLS 1.0 \/ 1.1: &#8230; <a title=\"TLS 1.2 ve TLS 1.3 Fark\u0131: Eski Protokoller Neden Kapat\u0131lmal\u0131?\" class=\"read-more\" href=\"https:\/\/secradar.net\/blog\/tls-1-2-1-3-farki\/\" aria-label=\"Read more about TLS 1.2 ve TLS 1.3 Fark\u0131: Eski Protokoller Neden Kapat\u0131lmal\u0131?\">Devam\u0131n\u0131 oku<\/a><\/p>\n","protected":false},"author":1,"featured_media":11,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-12","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guvenlik"],"_links":{"self":[{"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/posts\/12","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/comments?post=12"}],"version-history":[{"count":1,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/posts\/12\/revisions"}],"predecessor-version":[{"id":49,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/posts\/12\/revisions\/49"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/media\/11"}],"wp:attachment":[{"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/media?parent=12"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/categories?post=12"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/secradar.net\/blog\/wp-json\/wp\/v2\/tags?post=12"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}