{"id":22886,"date":"2025-03-01T08:38:59","date_gmt":"2025-03-01T05:38:59","guid":{"rendered":"https:\/\/www.cenuta.com\/blog\/?p=22886"},"modified":"2025-03-01T08:39:01","modified_gmt":"2025-03-01T05:39:01","slug":"sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler","status":"publish","type":"post","link":"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/","title":{"rendered":"Sunucu G\u00fcvenli\u011fi Nas\u0131l Sa\u011flan\u0131r? DDoS ve Zararl\u0131 Yaz\u0131l\u0131mlara Kar\u015f\u0131 \u00d6nlemler"},"content":{"rendered":"\n<p>G\u00fcn\u00fcm\u00fcz dijital d\u00fcnyas\u0131nda sunucu g\u00fcvenli\u011fi, hem bireysel kullan\u0131c\u0131lar hem de i\u015fletmeler i\u00e7in b\u00fcy\u00fck \u00f6nem ta\u015f\u0131maktad\u0131r. Siber sald\u0131r\u0131lar, veri ihlalleri ve zararl\u0131 yaz\u0131l\u0131mlar sunuculara zarar verebilir, hizmet kesintilerine neden olabilir ve hassas bilgilerin \u00e7al\u0131nmas\u0131na yol a\u00e7abilir. Bu makalede, sunucu g\u00fcvenli\u011fini sa\u011flamak i\u00e7in al\u0131nmas\u0131 gereken \u00f6nlemleri, DDoS sald\u0131r\u0131lar\u0131na kar\u015f\u0131 korunma y\u00f6ntemlerini ve zararl\u0131 yaz\u0131l\u0131mlara kar\u015f\u0131 etkili savunma stratejilerini ele alaca\u011f\u0131z.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0130\u00e7indekiler<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a20a0ae0c117\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" 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G\u00fcvenli\u011fi Nedir ve Neden \u00d6nemlidir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/#Sunucu_Guvenligi_Icin_Temel_Onlemler\" title=\"Sunucu G\u00fcvenli\u011fi \u0130\u00e7in Temel \u00d6nlemler\">Sunucu G\u00fcvenli\u011fi \u0130\u00e7in Temel \u00d6nlemler<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/#a_Guclu_Sifreleme_ve_Kimlik_Dogrulama\" title=\"a) G\u00fc\u00e7l\u00fc \u015eifreleme ve Kimlik Do\u011frulama\">a) G\u00fc\u00e7l\u00fc \u015eifreleme ve Kimlik Do\u011frulama<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/#b_Guvenlik_Duvari_Firewall_Kullanimi\" title=\"b) G\u00fcvenlik Duvar\u0131 (Firewall) Kullan\u0131m\u0131\">b) G\u00fcvenlik Duvar\u0131 (Firewall) Kullan\u0131m\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/#c_Guncellemeleri_ve_Yama_Yonetimini_Uygulama\" title=\"c) G\u00fcncellemeleri ve Yama Y\u00f6netimini Uygulama\">c) G\u00fcncellemeleri ve Yama Y\u00f6netimini Uygulama<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/#d_Yetkilendirme_ve_Erisim_Kontrolleri\" title=\"d) Yetkilendirme ve Eri\u015fim Kontrolleri\">d) Yetkilendirme ve Eri\u015fim Kontrolleri<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/#DDoS_Saldirilarina_Karsi_Korunma_Yontemleri\" title=\"DDoS Sald\u0131r\u0131lar\u0131na Kar\u015f\u0131 Korunma Y\u00f6ntemleri\">DDoS Sald\u0131r\u0131lar\u0131na Kar\u015f\u0131 Korunma Y\u00f6ntemleri<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/#Zararli_Yazilimlara_Karsi_Korunma_Stratejileri\" title=\"Zararl\u0131 Yaz\u0131l\u0131mlara Kar\u015f\u0131 Korunma Stratejileri\">Zararl\u0131 Yaz\u0131l\u0131mlara Kar\u015f\u0131 Korunma Stratejileri<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/#Sunucu_Guvenligi_Icin_Ekstra_Onlemler\" title=\"Sunucu G\u00fcvenli\u011fi \u0130\u00e7in Ekstra \u00d6nlemler\">Sunucu G\u00fcvenli\u011fi \u0130\u00e7in Ekstra \u00d6nlemler<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/#Sonuc\" title=\"Sonu\u00e7\">Sonu\u00e7<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sunucu_Guvenligi_Nedir_ve_Neden_Onemlidir\"><\/span>Sunucu G\u00fcvenli\u011fi Nedir ve Neden \u00d6nemlidir?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Sunucu g\u00fcvenli\u011fi, bir sunucunun yetkisiz eri\u015fimlerden, k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlardan ve \u00e7e\u015fitli siber tehditlerden korunmas\u0131n\u0131 ifade eder. G\u00fcvenli\u011fi sa\u011flanmam\u0131\u015f bir sunucu \u015fu risklerle kar\u015f\u0131 kar\u015f\u0131ya kalabilir:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Veri s\u0131z\u0131nt\u0131lar\u0131 ve ihlalleri<\/li>\n\n\n\n<li>Hizmet kesintileri ve i\u015f kayb\u0131<\/li>\n\n\n\n<li>Kimlik av\u0131 sald\u0131r\u0131lar\u0131<\/li>\n\n\n\n<li>Fidye yaz\u0131l\u0131mlar\u0131 (Ransomware)<\/li>\n<\/ul>\n\n\n\n<p>Bu y\u00fczden, sunucular\u0131n g\u00fcvenli\u011fini art\u0131rmak i\u00e7in \u00e7e\u015fitli g\u00fcvenlik \u00f6nlemlerinin uygulanmas\u0131 \u015fartt\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sunucu_Guvenligi_Icin_Temel_Onlemler\"><\/span>Sunucu G\u00fcvenli\u011fi \u0130\u00e7in Temel \u00d6nlemler<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Sunucu g\u00fcvenli\u011fini sa\u011flamak i\u00e7in a\u015fa\u011f\u0131daki temel \u00f6nlemler al\u0131nmal\u0131d\u0131r:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"a_Guclu_Sifreleme_ve_Kimlik_Dogrulama\"><\/span>a) G\u00fc\u00e7l\u00fc \u015eifreleme ve Kimlik Do\u011frulama<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>G\u00fc\u00e7l\u00fc ve karma\u015f\u0131k parolalar kullan\u0131n.<\/li>\n\n\n\n<li>\u00c7ok fakt\u00f6rl\u00fc kimlik do\u011frulama (MFA) sistemlerini etkinle\u015ftirin.<\/li>\n\n\n\n<li>SSH anahtar tabanl\u0131 kimlik do\u011frulama kullanarak eri\u015fim g\u00fcvenli\u011fini art\u0131r\u0131n.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"b_Guvenlik_Duvari_Firewall_Kullanimi\"><\/span>b) G\u00fcvenlik Duvar\u0131 (Firewall) Kullan\u0131m\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Giri\u015f ve \u00e7\u0131k\u0131\u015f trafi\u011fini kontrol etmek i\u00e7in g\u00fcvenlik duvar\u0131 (firewall) yap\u0131land\u0131rmalar\u0131 yap\u0131n.<\/li>\n\n\n\n<li>Gereksiz portlar\u0131 kapatarak sald\u0131r\u0131 y\u00fczeyini azalt\u0131n.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"c_Guncellemeleri_ve_Yama_Yonetimini_Uygulama\"><\/span>c) G\u00fcncellemeleri ve Yama Y\u00f6netimini Uygulama<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0130\u015fletim sistemi ve yaz\u0131l\u0131mlar\u0131n\u0131z\u0131 d\u00fczenli olarak g\u00fcncelleyin.<\/li>\n\n\n\n<li>G\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 kapatan yamalar\u0131 m\u00fcmk\u00fcn olan en k\u0131sa s\u00fcrede uygulay\u0131n.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"d_Yetkilendirme_ve_Erisim_Kontrolleri\"><\/span>d) Yetkilendirme ve Eri\u015fim Kontrolleri<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kullan\u0131c\u0131 hesaplar\u0131na minimum yetki vererek en d\u00fc\u015f\u00fck ayr\u0131cal\u0131k ilkesini uygulay\u0131n.<\/li>\n\n\n\n<li>Gereksiz kullan\u0131c\u0131 hesaplar\u0131n\u0131 devre d\u0131\u015f\u0131 b\u0131rak\u0131n.<\/li>\n\n\n\n<li>K\u00f6k (root) eri\u015fimini k\u0131s\u0131tlayarak daha g\u00fcvenli bir yap\u0131 olu\u015fturun.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DDoS_Saldirilarina_Karsi_Korunma_Yontemleri\"><\/span>DDoS Sald\u0131r\u0131lar\u0131na Kar\u015f\u0131 Korunma Y\u00f6ntemleri<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>DDoS (Distributed Denial of Service) sald\u0131r\u0131lar\u0131, bir sunucunun a\u015f\u0131r\u0131 trafikle hedef al\u0131narak hizmet veremez hale getirilmesine neden olur. Bu sald\u0131r\u0131lara kar\u015f\u0131 al\u0131nabilecek \u00f6nlemler \u015funlard\u0131r:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>DDoS korumal\u0131 bir hosting hizmeti kullan\u0131n.<\/strong><\/li>\n\n\n\n<li><strong>A\u011f trafi\u011fini izleyin ve anormal hareketleri tespit eden IDS\/IPS sistemlerini devreye al\u0131n.<\/strong><\/li>\n\n\n\n<li><strong>CDN (Content Delivery Network) kullanarak trafi\u011fi optimize edin.<\/strong><\/li>\n\n\n\n<li><strong>Rate Limiting (H\u0131z S\u0131n\u0131rland\u0131rma) uygulayarak belirli IP adreslerinden gelen yo\u011fun trafi\u011fi kontrol alt\u0131na al\u0131n.<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Zararli_Yazilimlara_Karsi_Korunma_Stratejileri\"><\/span>Zararl\u0131 Yaz\u0131l\u0131mlara Kar\u015f\u0131 Korunma Stratejileri<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Zararl\u0131 yaz\u0131l\u0131mlar, sunuculara bula\u015farak veri \u00e7alma, sistemleri yava\u015flatma veya k\u00f6t\u00fc ama\u00e7l\u0131 i\u015flemler ger\u00e7ekle\u015ftirme riski ta\u015f\u0131r. A\u015fa\u011f\u0131daki y\u00f6ntemlerle korunabilirsiniz:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Antivir\u00fcs ve zararl\u0131 yaz\u0131l\u0131m tespit yaz\u0131l\u0131mlar\u0131n\u0131 d\u00fczenli olarak \u00e7al\u0131\u015ft\u0131r\u0131n.<\/strong><\/li>\n\n\n\n<li><strong>\u0130\u00e7erik g\u00fcvenlik politikalar\u0131 olu\u015fturarak kullan\u0131c\u0131lar\u0131n bilinmeyen dosyalar\u0131 \u00e7al\u0131\u015ft\u0131rmas\u0131n\u0131 engelleyin.<\/strong><\/li>\n\n\n\n<li><strong>Dosya b\u00fct\u00fcnl\u00fck kontrol sistemleri (FIM) ile sunucudaki dosya de\u011fi\u015fikliklerini takip edin.<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sunucu_Guvenligi_Icin_Ekstra_Onlemler\"><\/span>Sunucu G\u00fcvenli\u011fi \u0130\u00e7in Ekstra \u00d6nlemler<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>G\u00fcvenlik yedeklemeleri yap\u0131n:<\/strong> Kritik verilerinizi d\u00fczenli olarak yedekleyerek olas\u0131 bir sald\u0131r\u0131ya kar\u015f\u0131 haz\u0131rl\u0131kl\u0131 olun.<\/li>\n\n\n\n<li><strong>G\u00fcvenlik denetimleri ve testler yap\u0131n:<\/strong> S\u0131zma testleri (penetration testing) ile sunucunuzun g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 tespit edin.<\/li>\n\n\n\n<li><strong>Log (Kay\u0131t) Y\u00f6netimi:<\/strong> Sistem loglar\u0131n\u0131 d\u00fczenli olarak inceleyerek \u015f\u00fcpheli hareketleri tespit edin.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sonuc\"><\/span>Sonu\u00e7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Sunucu g\u00fcvenli\u011fi, siber tehditlere kar\u015f\u0131 proaktif \u00f6nlemler al\u0131narak sa\u011flanabilir. G\u00fc\u00e7l\u00fc kimlik do\u011frulama, g\u00fcvenlik duvarlar\u0131, g\u00fcncellemeler ve yedekleme gibi temel g\u00fcvenlik \u00f6nlemleri ile sunucunuzu koruyabilirsiniz. DDoS sald\u0131r\u0131lar\u0131na ve zararl\u0131 yaz\u0131l\u0131mlara kar\u015f\u0131 da etkili stratejiler geli\u015ftirerek kesintisiz ve g\u00fcvenli bir sistem altyap\u0131s\u0131 olu\u015fturabilirsiniz. G\u00fcvenlik, s\u00fcrekli takip edilmesi gereken bir s\u00fcre\u00e7tir ve d\u00fczenli denetimlerle en iyi seviyeye getirilebilir.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>G\u00fcn\u00fcm\u00fcz dijital d\u00fcnyas\u0131nda sunucu g\u00fcvenli\u011fi, hem bireysel kullan\u0131c\u0131lar hem de<a href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/\">&#8230;<\/a><\/p>\n","protected":false},"author":4,"featured_media":22885,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[286,700],"class_list":["post-22886","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sunucu","tag-ddos","tag-sunucu-guvenligi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\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.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-ddos-ve-zararli-yazilimlara-karsi-onlemler\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sunucu G\u00fcvenli\u011fi Nas\u0131l Sa\u011flan\u0131r? 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