{"id":6838,"date":"2026-08-21T22:00:00","date_gmt":"2026-08-21T22:00:00","guid":{"rendered":"https:\/\/erdincbulat.com\/?p=6838"},"modified":"2026-08-21T22:00:00","modified_gmt":"2026-08-21T22:00:00","slug":"ssl-sertifikasi-nedir","status":"publish","type":"post","link":"https:\/\/erdincbulat.com\/en\/ssl-sertifikasi-nedir\/","title":{"rendered":"SSL Sertifikas\u0131 Nedir? Web Siteniz \u0130\u00e7in Neden Zorunlu?"},"content":{"rendered":"<p><strong>SSL sertifikas\u0131, bir web sitesi ile ziyaret\u00e7isinin taray\u0131c\u0131s\u0131 aras\u0131ndaki veri trafi\u011fini \u015fifreleyen ve adres \u00e7ubu\u011funda kilit simgesiyle g\u00f6r\u00fcnen g\u00fcvenlik teknolojisidir.<\/strong> G\u00fcn\u00fcm\u00fczde SSL art\u0131k bir &#8220;l\u00fcks&#8221; de\u011fil, hem taray\u0131c\u0131lar\u0131n hem Google&#8217;\u0131n hem de ziyaret\u00e7ilerin bekledi\u011fi bir temel gerekliliktir \u2014 SSL&#8217;siz bir site, &#8220;G\u00fcvenli De\u011fil&#8221; uyar\u0131s\u0131yla kar\u015f\u0131lan\u0131r ve bu tek uyar\u0131 bile ziyaret\u00e7inin siteden an\u0131nda ayr\u0131lmas\u0131na yetebilir. Bu yaz\u0131da SSL sertifikas\u0131n\u0131n ne i\u015fe yarad\u0131\u011f\u0131n\u0131, t\u00fcrlerini, nas\u0131l kuruldu\u011funu ve Google s\u0131ralamas\u0131na ger\u00e7ekten etkisi olup olmad\u0131\u011f\u0131n\u0131 anlat\u0131yoruz.<\/p>\n<h2>SSL Sertifikas\u0131 Nedir?<\/h2>\n<p>SSL (Secure Sockets Layer), taray\u0131c\u0131 ile sunucu aras\u0131nda aktar\u0131lan verileri \u015fifreleyen bir g\u00fcvenlik protokol\u00fcd\u00fcr. Bir sitede SSL sertifikas\u0131 varsa, adres &#8220;http:\/\/&#8221; yerine &#8220;https:\/\/&#8221; ile ba\u015flar ve taray\u0131c\u0131da genellikle bir kilit simgesi g\u00f6r\u00fcn\u00fcr. Bu \u015fifreleme sayesinde, bir ziyaret\u00e7i sitenizde form doldururken veya bir \u00f6deme yaparken, girdi\u011fi bilgiler \u00fc\u00e7\u00fcnc\u00fc ki\u015filer taraf\u0131ndan araya girilip okunamaz. Teknik olarak SSL, g\u00fcn\u00fcm\u00fczde b\u00fcy\u00fck \u00f6l\u00e7\u00fcde yerini daha g\u00fcncel bir protokol olan TLS&#8217;e (Transport Layer Security) b\u0131rakt\u0131, ama &#8220;SSL sertifikas\u0131&#8221; ismi sekt\u00f6rde h\u00e2l\u00e2 yayg\u0131n kullan\u0131l\u0131yor \u2014 pratikte bir hosting panelinde &#8220;SSL kur&#8221; dedi\u011finizde asl\u0131nda g\u00fcncel TLS protokol\u00fc kuruluyor, bu isim fark\u0131 son kullan\u0131c\u0131 i\u00e7in bir sorun yaratm\u0131yor.<\/p>\n<h2>HTTPS ile HTTP Aras\u0131ndaki Fark Nedir?<\/h2>\n<p>HTTP, veriyi d\u00fcz metin (\u015fifresiz) olarak ta\u015f\u0131r; ayn\u0131 a\u011f\u0131 kullanan biri bu veriyi teknik olarak izleyebilir. HTTPS ise SSL\/TLS \u015fifrelemesiyle bu veriyi okunamaz hale getirir. Fark sadece teknik de\u011fil, g\u00f6rsel de: modern taray\u0131c\u0131lar (Chrome, Firefox, Edge) HTTP siteleri adres \u00e7ubu\u011funda a\u00e7\u0131k\u00e7a &#8220;G\u00fcvenli De\u011fil&#8221; ibaresiyle i\u015faretliyor. Bu uyar\u0131, \u00f6zellikle ileti\u015fim formu veya \u00f6deme sayfas\u0131 olan sitelerde ziyaret\u00e7i g\u00fcvenini do\u011frudan zedeliyor.<\/p>\n<h2>SSL Sertifikas\u0131 Olmayan Bir Site Ne Kaybeder?<\/h2>\n<p>SSL eksikli\u011finin somut sonu\u00e7lar\u0131 var:<\/p>\n<ul>\n<li><strong>Taray\u0131c\u0131 uyar\u0131s\u0131:<\/strong> &#8220;G\u00fcvenli De\u011fil&#8221; ibaresi, \u00f6zellikle form\/\u00f6deme sayfalar\u0131nda ziyaret\u00e7iyi cayd\u0131r\u0131r.<\/li>\n<li><strong>Google s\u0131ralamas\u0131:<\/strong> HTTPS, 2014&#8217;ten beri Google&#8217;\u0131n resmi olarak a\u00e7\u0131klad\u0131\u011f\u0131 bir s\u0131ralama sinyali.<\/li>\n<li><strong>Taray\u0131c\u0131 engelleri:<\/strong> Chrome, SSL&#8217;siz sitelerde hassas form alanlar\u0131n\u0131 (\u015fifre, kart bilgisi) ayr\u0131ca i\u015faretleyip kullan\u0131c\u0131y\u0131 uyar\u0131r.<\/li>\n<li><strong>Marka g\u00fcveni:<\/strong> Bir ziyaret\u00e7i &#8220;G\u00fcvenli De\u011fil&#8221; uyar\u0131s\u0131n\u0131 g\u00f6r\u00fcnce, sitenin arkas\u0131ndaki i\u015fletmeyi de g\u00fcvensiz olarak alg\u0131layabilir.<\/li>\n<li><strong>Baz\u0131 entegrasyonlar \u00e7al\u0131\u015fmaz:<\/strong> \u00d6deme sistemleri, API ba\u011flant\u0131lar\u0131 ve baz\u0131 \u00fc\u00e7\u00fcnc\u00fc parti ara\u00e7lar SSL&#8217;siz sitelerde \u00e7al\u0131\u015fmay\u0131 reddeder.<\/li>\n<\/ul>\n<h2>SSL Sertifikas\u0131 T\u00fcrleri Nelerdir?<\/h2>\n<p>T\u00fcm SSL sertifikalar\u0131 ayn\u0131 d\u00fczeyde do\u011frulama sunmaz. \u00dc\u00e7 ana t\u00fcr vard\u0131r:<\/p>\n<table>\n<thead>\n<tr>\n<th>T\u00fcr<\/th>\n<th>Do\u011frulama D\u00fczeyi<\/th>\n<th>Kimler \u0130\u00e7in Uygun<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>DV (Domain Validation)<\/td>\n<td>Sadece alan ad\u0131 sahipli\u011fi do\u011frulan\u0131r, dakikalar i\u00e7inde kurulur<\/td>\n<td>Kurumsal siteler, bloglar, portf\u00f6y siteleri<\/td>\n<\/tr>\n<tr>\n<td>OV (Organization Validation)<\/td>\n<td>\u015eirket bilgileri de do\u011frulan\u0131r<\/td>\n<td>Orta-b\u00fcy\u00fck i\u015fletmeler, kurumsal g\u00fcven vurgusu isteyenler<\/td>\n<\/tr>\n<tr>\n<td>EV (Extended Validation)<\/td>\n<td>En kapsaml\u0131 do\u011frulama, yasal \u015firket kayd\u0131 kontrol edilir<\/td>\n<td>Bankac\u0131l\u0131k, e-ticaret, \u00f6deme alan y\u00fcksek g\u00fcven gerektiren siteler<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u00c7o\u011fu kurumsal\/hizmet sitesi i\u00e7in \u00fccretsiz bir DV sertifikas\u0131 (\u00f6rne\u011fin Let&#8217;s Encrypt) fazlas\u0131yla yeterlidir; e-ticaret veya do\u011frudan \u00f6deme alan siteler i\u00e7in OV\/EV de\u011ferlendirilebilir.<\/p>\n<h2>Alt Alan Adlar\u0131nda (Subdomain) SSL Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h2>\n<p>Bir i\u015fletmenin sadece ana alan ad\u0131 (erdincbulat.com) de\u011fil, &#8220;blog.erdincbulat.com&#8221; veya &#8220;magaza.erdincbulat.com&#8221; gibi alt alan adlar\u0131 da olabilir. Standart bir SSL sertifikas\u0131 genellikle yaln\u0131zca kuruldu\u011fu tek alan ad\u0131n\u0131 kapsar; birden fazla alt alan ad\u0131 varsa iki se\u00e7enek vard\u0131r: her alt alan ad\u0131 i\u00e7in ayr\u0131 sertifika kurmak, ya da t\u00fcm alt alan adlar\u0131n\u0131 tek seferde kapsayan bir &#8220;wildcard&#8221; SSL sertifikas\u0131 almak. K\u00fc\u00e7\u00fck\/orta \u00f6l\u00e7ekli i\u015fletme siteleri i\u00e7in genellikle tek bir ana alan ad\u0131 ve en fazla bir-iki alt alan ad\u0131 (\u00f6rne\u011fin &#8220;www.&#8221;) oldu\u011fundan, \u00e7o\u011fu hosting sa\u011flay\u0131c\u0131s\u0131n\u0131n otomatik sundu\u011fu standart sertifika yeterli olur; wildcard SSL, \u00e7ok say\u0131da alt alan ad\u0131 i\u015fleten (\u00f6rne\u011fin her m\u00fc\u015fterisine ayr\u0131 bir alt alan ad\u0131 veren SaaS) siteler i\u00e7in daha anlaml\u0131d\u0131r.<\/p>\n<h2>SSL Sertifikas\u0131 Nas\u0131l Kurulur?<\/h2>\n<p>Modern hosting sa\u011flay\u0131c\u0131lar\u0131n\u0131n \u00e7o\u011funda SSL kurulumu art\u0131k teknik bilgi gerektirmiyor, ama ad\u0131mlar\u0131n do\u011fru s\u0131rayla ve eksiksiz tamamlanmas\u0131 \u00f6nemli:<\/p>\n<ol>\n<li>Hosting panelinizde (cPanel, hPanel vb.) &#8220;SSL&#8221; veya &#8220;G\u00fcvenlik&#8221; b\u00f6l\u00fcm\u00fcn\u00fc bulun.<\/li>\n<li>\u00c7o\u011fu sa\u011flay\u0131c\u0131 \u00fccretsiz Let&#8217;s Encrypt sertifikas\u0131n\u0131 tek t\u0131kla otomatik kuruyor.<\/li>\n<li>Kurulumdan sonra sitenizin t\u00fcm sayfalar\u0131n\u0131n &#8220;https:\/\/&#8221; ile a\u00e7\u0131ld\u0131\u011f\u0131n\u0131 kontrol edin.<\/li>\n<li>WordPress kullan\u0131yorsan\u0131z, &#8220;Ayarlar &gt; Genel&#8221; b\u00f6l\u00fcm\u00fcnden site ve WordPress adreslerinin &#8220;https:\/\/&#8221; ile ba\u015flad\u0131\u011f\u0131ndan emin olun.<\/li>\n<li>Eski http ba\u011flant\u0131lar\u0131n\u0131n otomatik https&#8217;e y\u00f6nlendirildi\u011fini (301 redirect) do\u011frulay\u0131n \u2014 aksi halde taray\u0131c\u0131da &#8220;karma i\u00e7erik&#8221; (mixed content) uyar\u0131s\u0131 \u00e7\u0131kabilir.<\/li>\n<\/ol>\n<p>Bu ad\u0131mlar, <a href=\"https:\/\/erdincbulat.com\/web-tasarimi-nedir\/\">bir web sitesi kurulurken<\/a> genellikle hosting\/kurulum s\u00fcrecinin do\u011fal bir par\u00e7as\u0131 olarak tamamlan\u0131yor; sonradan eklemek de m\u00fcmk\u00fcn ama gecikmeden yap\u0131lmas\u0131 \u00f6nerilir. Kurulum sonras\u0131 en s\u0131k atlanan ad\u0131m be\u015fincisi (y\u00f6nlendirme kontrol\u00fc) \u2014 sertifika kurulu olsa bile eski http ba\u011flant\u0131lar\u0131 otomatik https&#8217;e y\u00f6nlendirilmiyorsa, ziyaret\u00e7i h\u00e2l\u00e2 \u015fifresiz s\u00fcr\u00fcme eri\u015febilir ve arama motorlar\u0131 iki ayr\u0131 s\u00fcr\u00fcm\u00fc (http ve https) farkl\u0131 sayfalar olarak alg\u0131lay\u0131p i\u00e7erik tekrar\u0131 (duplicate content) sorunuyla kar\u015f\u0131la\u015fabilir.<\/p>\n<h2>Hangi Sitelerde SSL Kesinlikle Zorunlu, Hangilerinde Tercih?<\/h2>\n<p>Teknik olarak her site SSL&#8217;den fayda g\u00f6r\u00fcr, ama \u00f6nceliklendirme yapmak gerekirse: form i\u00e7eren siteler (ileti\u015fim, teklif, rezervasyon formu), kullan\u0131c\u0131 giri\u015fi\/\u015fifre alan siteler ve elbette \u00f6deme alan e-ticaret siteleri i\u00e7in SSL kesinlikle zorunludur \u2014 bu sitelerde SSL olmadan \u00e7al\u0131\u015fmak, hem g\u00fcven hem de yasal veri koruma a\u00e7\u0131s\u0131ndan risklidir. Sadece bilgi ama\u00e7l\u0131, form i\u00e7ermeyen bir tan\u0131t\u0131m sitesi i\u00e7in bile SSL art\u0131k pratikte &#8220;zorunlu&#8221; kabul ediliyor \u00e7\u00fcnk\u00fc taray\u0131c\u0131 uyar\u0131s\u0131 ayr\u0131m yapmadan t\u00fcm HTTP siteleri i\u015faretliyor.<\/p>\n<h2>SSL, Google S\u0131ralamas\u0131n\u0131 Ger\u00e7ekten Etkiler mi?<\/h2>\n<p>Evet, ama tek ba\u015f\u0131na belirleyici bir fakt\u00f6r de\u011fil. Google, 2014&#8217;te HTTPS&#8217;i resmi bir s\u0131ralama sinyali olarak a\u00e7\u0131klad\u0131; ancak bunun etkisi, i\u00e7erik kalitesi veya sayfa h\u0131z\u0131 gibi di\u011fer fakt\u00f6rlere g\u00f6re g\u00f6rece k\u00fc\u00e7\u00fck. As\u0131l b\u00fcy\u00fck etki dolayl\u0131: SSL&#8217;siz bir site taray\u0131c\u0131 uyar\u0131s\u0131 y\u00fcz\u00fcnden y\u00fcksek hemen \u00e7\u0131kma oran\u0131na (bounce rate) sahip olabilir, bu da dolayl\u0131 olarak <a href=\"https:\/\/erdincbulat.com\/teknik-seo-nedir\/\">teknik SEO<\/a> performans\u0131n\u0131 zay\u0131flat\u0131r. Yani SSL, do\u011frudan k\u00fc\u00e7\u00fck bir s\u0131ralama sinyali + dolayl\u0131 olarak kullan\u0131c\u0131 g\u00fcveni\/davran\u0131\u015f\u0131 \u00fczerinden daha b\u00fcy\u00fck bir etki yarat\u0131yor. Google&#8217;\u0131n kendi \u015feffafl\u0131k raporlar\u0131na g\u00f6re, Chrome \u00fczerinden y\u00fcklenen sayfalar\u0131n b\u00fcy\u00fck \u00e7o\u011funlu\u011fu art\u0131k HTTPS \u00fczerinden sunuluyor \u2014 bu da HTTPS&#8217;siz bir sitenin art\u0131k istisna de\u011fil, kullan\u0131c\u0131 beklentisinin d\u0131\u015f\u0131nda kalan az\u0131nl\u0131k bir durum haline geldi\u011fi anlam\u0131na geliyor.<\/p>\n<h2>\u00dccretsiz mi \u00dccretli mi SSL Almal\u0131s\u0131n\u0131z?<\/h2>\n<p>\u00c7o\u011fu i\u015fletme sitesi i\u00e7in \u00fccretsiz Let&#8217;s Encrypt sertifikas\u0131 teknik olarak \u00fccretli se\u00e7eneklerle ayn\u0131 d\u00fczeyde \u015fifreleme sa\u011flar \u2014 fark, do\u011frulama derinli\u011fi ve garanti\/destek hizmetlerinde. Y\u00fcksek hacimli \u00f6deme i\u015flemi yapan bir e-ticaret sitesi de\u011filseniz, \u00fccretsiz DV sertifikas\u0131 hem yeterli hem de maliyetsiz bir \u00e7\u00f6z\u00fcmd\u00fcr.<\/p>\n<h2>Ger\u00e7ek Bir Senaryo: Unutulan SSL Yenilemesi<\/h2>\n<p>Bir i\u015fletme sahibi, sitesini y\u0131llar \u00f6nce kurdurmu\u015f ve SSL sertifikas\u0131n\u0131n otomatik yenilendi\u011fini varsaym\u0131\u015ft\u0131. Hosting sa\u011flay\u0131c\u0131s\u0131 de\u011fi\u015fikli\u011finde otomatik yenileme ayar\u0131 s\u0131f\u0131rlanm\u0131\u015f ama fark edilmemi\u015fti. Sertifika s\u00fcresi doldu\u011funda site aniden &#8220;G\u00fcvenli De\u011fil&#8221; uyar\u0131s\u0131yla kar\u015f\u0131lanmaya ba\u015flad\u0131, birka\u00e7 g\u00fcn i\u00e7inde ileti\u015fim formu doldurma oran\u0131 belirgin \u015fekilde d\u00fc\u015ft\u00fc. Sorun fark edilip sertifika yenilendi\u011finde durum normale d\u00f6nd\u00fc. Bu senaryo, SSL&#8217;in &#8220;bir kere kurulur unutulur&#8221; de\u011fil, d\u00fczenli kontrol edilmesi gereken bir bile\u015fen oldu\u011funu g\u00f6steriyor. Hosting sa\u011flay\u0131c\u0131s\u0131 de\u011fi\u015ftirirken, alan ad\u0131 ta\u015f\u0131rken veya sunucu yap\u0131land\u0131rmas\u0131 g\u00fcncellerken SSL ayarlar\u0131n\u0131n yeni ortama do\u011fru ta\u015f\u0131nd\u0131\u011f\u0131n\u0131 mutlaka kontrol etmek gerekiyor \u2014 aksi halde, tasar\u0131m\u0131 ve i\u00e7eri\u011fi hi\u00e7 de\u011fi\u015fmeyen bir sitede bile ziyaret\u00e7i g\u00fcveni bir gecede sars\u0131labilir.<\/p>\n<h2>S\u0131k Sorulan Sorular<\/h2>\n<h3>SSL sertifikas\u0131 \u00fccretsiz mi olmal\u0131, \u00fccretli mi?<\/h3>\n<p>\u00c7o\u011fu kurumsal\/hizmet sitesi i\u00e7in \u00fccretsiz Let&#8217;s Encrypt yeterlidir; y\u00fcksek hacimli e-ticaret\/\u00f6deme siteleri i\u00e7in \u00fccretli OV\/EV se\u00e7enekleri de\u011ferlendirilebilir.<\/p>\n<h3>SSL sertifikas\u0131 olmadan site Google&#8217;da hi\u00e7 g\u00f6r\u00fcnmez mi?<\/h3>\n<p>G\u00f6r\u00fcn\u00fcr, ama hem k\u00fc\u00e7\u00fck bir s\u0131ralama dezavantaj\u0131 hem de taray\u0131c\u0131 uyar\u0131s\u0131 y\u00fcz\u00fcnden dolayl\u0131 bir kullan\u0131c\u0131 g\u00fcveni kayb\u0131 ya\u015fan\u0131r.<\/p>\n<h3>SSL sertifikas\u0131n\u0131n s\u00fcresi doluyor mu, yenilenmesi gerekiyor mu?<\/h3>\n<p>Evet, \u00e7o\u011fu sertifikan\u0131n belirli bir ge\u00e7erlilik s\u00fcresi var; modern hosting panelleri bunu otomatik yeniliyor ama bu ayar\u0131n aktif oldu\u011funu periyodik kontrol etmek gerekir.<\/p>\n<h3>WordPress sitesine SSL kurmak zor mu?<\/h3>\n<p>Hay\u0131r, \u00e7o\u011fu hosting sa\u011flay\u0131c\u0131s\u0131nda tek t\u0131kla kuruluyor; as\u0131l dikkat edilmesi gereken nokta kurulumdan sonra t\u00fcm http ba\u011flant\u0131lar\u0131n\u0131n https&#8217;e y\u00f6nlendirildi\u011fini kontrol etmektir.<\/p>\n<h3>SSL sertifikas\u0131 site h\u0131z\u0131n\u0131 etkiler mi?<\/h3>\n<p>Modern SSL\/TLS protokolleri neredeyse hi\u00e7 fark edilir bir gecikme yaratmaz; aksine HTTP\/2 gibi h\u0131zl\u0131 protokoller genellikle SSL gerektirdi\u011fi i\u00e7in dolayl\u0131 olarak h\u0131z\u0131 destekler.<\/p>\n<hr\/>\n<p>Sitenizin SSL kurulumunu, g\u00fcvenli\u011fini ve <a href=\"https:\/\/erdincbulat.com\/seo-dostu-web-tasarimi-nedir\/\">SEO dostu teknik altyap\u0131s\u0131n\u0131<\/a> ba\u015ftan do\u011fru kurmak i\u00e7in <a href=\"https:\/\/erdincbulat.com\/#hizmetlerim\">web tasar\u0131m\u0131 hizmetlerime<\/a> g\u00f6z atabilir ya da do\u011frudan <a href=\"https:\/\/wa.me\/905451249865?text=Merhaba%20Erdin%C3%A7%2C%20sitemin%20SSL%20g%C3%BCvenli%C4%9Fi%20hakk%C4%B1nda%20bilgi%20almak%20istiyorum.\">WhatsApp&#8217;tan<\/a> ula\u015fabilirsiniz.<\/p>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"SSL sertifikas\u0131 \u00fccretsiz mi olmal\u0131, \u00fccretli mi?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u00c7o\u011fu kurumsal\/hizmet sitesi i\u00e7in \u00fccretsiz Let's Encrypt yeterlidir; 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G\u00fcn\u00fcm\u00fczde SSL art\u0131k bir &#8220;l\u00fcks&#8221; de\u011fil, hem taray\u0131c\u0131lar\u0131n hem Google&#8217;\u0131n hem de ziyaret\u00e7ilerin bekledi\u011fi bir temel gerekliliktir \u2014 SSL&#8217;siz bir site, &#8220;G\u00fcvenli De\u011fil&#8221; uyar\u0131s\u0131yla kar\u015f\u0131lan\u0131r ve bu tek uyar\u0131 bile ziyaret\u00e7inin siteden an\u0131nda ayr\u0131lmas\u0131na yetebilir.&hellip;<\/p>","protected":false},"author":1,"featured_media":6835,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":0,"footnotes":""},"categories":[62],"tags":[79,41,50],"class_list":["post-6838","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-web-tasarimi","tag-ssl-sertifikasi","tag-web-tasarimi","tag-wordpress-guvenligi","category-62","description-off"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SSL Sertifikas\u0131 Nedir? 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