{"id":23323,"date":"2025-05-16T08:34:11","date_gmt":"2025-05-16T05:34:11","guid":{"rendered":"https:\/\/www.cenuta.com\/blog\/?p=23323"},"modified":"2025-05-16T08:34:13","modified_gmt":"2025-05-16T05:34:13","slug":"sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri","status":"publish","type":"post","link":"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/","title":{"rendered":"Sunucu G\u00fcvenli\u011fi Nas\u0131l Sa\u011flan\u0131r? Firewall, DDoS Korumas\u0131 ve G\u00fcncelleme Stratejileri"},"content":{"rendered":"\n<p>Sunucu g\u00fcvenli\u011fi, hem bireysel kullan\u0131c\u0131lar hem de kurumsal firmalar i\u00e7in dijital altyap\u0131n\u0131n korunmas\u0131nda hayati \u00f6neme sahiptir. Siber sald\u0131r\u0131lar\u0131n say\u0131s\u0131 ve karma\u015f\u0131kl\u0131\u011f\u0131 giderek artarken, sunucular\u0131n g\u00fcvenli\u011finin sa\u011flanmas\u0131 sadece bir tercih de\u011fil, zorunluluk haline gelmi\u015ftir. Bu yaz\u0131da, etkili sunucu g\u00fcvenli\u011fi sa\u011flamak i\u00e7in kullanabilece\u011finiz temel stratejileri, ara\u00e7lar\u0131 ve uygulamalar\u0131 detayl\u0131 \u015fekilde 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-6a20ab3640910\" 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\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a20ab3640910\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#Sunucu_Guvenligi_Neden_Onemlidir\" title=\"Sunucu G\u00fcvenli\u011fi Neden \u00d6nemlidir?\">Sunucu G\u00fcvenli\u011fi 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-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#1_Guclu_Bir_Firewall_Guvenlik_Duvari_Kurulumu\" title=\"1. G\u00fc\u00e7l\u00fc Bir Firewall (G\u00fcvenlik Duvar\u0131) Kurulumu\">1. G\u00fc\u00e7l\u00fc Bir Firewall (G\u00fcvenlik Duvar\u0131) Kurulumu<\/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-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#Guvenlik_Duvari_Nedir\" title=\"G\u00fcvenlik Duvar\u0131 Nedir?\">G\u00fcvenlik Duvar\u0131 Nedir?<\/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-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#Hangi_Tur_Firewall_Kullanilmali\" title=\"Hangi T\u00fcr Firewall Kullan\u0131lmal\u0131?\">Hangi T\u00fcr Firewall Kullan\u0131lmal\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-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#En_Iyi_Uygulamalar\" title=\"En \u0130yi Uygulamalar\">En \u0130yi Uygulamalar<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#2_DDoS_Dagitik_Hizmet_Reddi_Saldirilarina_Karsi_Koruma\" title=\"2. DDoS (Da\u011f\u0131t\u0131k Hizmet Reddi) Sald\u0131r\u0131lar\u0131na Kar\u015f\u0131 Koruma\">2. DDoS (Da\u011f\u0131t\u0131k Hizmet Reddi) Sald\u0131r\u0131lar\u0131na Kar\u015f\u0131 Koruma<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#DDoS_Nedir\" title=\"DDoS Nedir?\">DDoS Nedir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#DDoS_Koruma_Yontemleri\" title=\"DDoS Koruma Y\u00f6ntemleri\">DDoS Koruma Y\u00f6ntemleri<\/a><\/li><\/ul><\/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-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#3_Yazilim_ve_Sistem_Guncellemeleri\" title=\"3. Yaz\u0131l\u0131m ve Sistem G\u00fcncellemeleri\">3. Yaz\u0131l\u0131m ve Sistem G\u00fcncellemeleri<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#Guncel_Sistemler_Neden_Onemlidir\" title=\"G\u00fcncel Sistemler Neden \u00d6nemlidir?\">G\u00fcncel Sistemler Neden \u00d6nemlidir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#Guncelleme_Stratejileri\" title=\"G\u00fcncelleme Stratejileri\">G\u00fcncelleme Stratejileri<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#4_Erisim_Kontrolu_ve_Kimlik_Dogrulama\" title=\"4. Eri\u015fim Kontrol\u00fc ve Kimlik Do\u011frulama\">4. Eri\u015fim Kontrol\u00fc ve Kimlik Do\u011frulama<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#Yetkisiz_Girisleri_Engelleyin\" title=\"Yetkisiz Giri\u015fleri Engelleyin\">Yetkisiz Giri\u015fleri Engelleyin<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#5_Loglama_ve_Izleme_Sistemleri\" title=\"5. Loglama ve \u0130zleme Sistemleri\">5. Loglama ve \u0130zleme Sistemleri<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#Izleme_Neden_Gereklidir\" title=\"\u0130zleme Neden Gereklidir?\">\u0130zleme Neden Gereklidir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#Kullanilabilecek_Izleme_Araclari\" title=\"Kullan\u0131labilecek \u0130zleme Ara\u00e7lar\u0131\">Kullan\u0131labilecek \u0130zleme Ara\u00e7lar\u0131<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#6_Yedekleme_ve_Olasi_Saldiriya_Hazirlik\" title=\"6. Yedekleme ve Olas\u0131 Sald\u0131r\u0131ya Haz\u0131rl\u0131k\">6. Yedekleme ve Olas\u0131 Sald\u0131r\u0131ya Haz\u0131rl\u0131k<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#Yedekleme_Neden_Olmazsa_Olmaz\" title=\"Yedekleme Neden Olmazsa Olmaz?\">Yedekleme Neden Olmazsa Olmaz?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#Etkili_Yedekleme_Stratejileri\" title=\"Etkili Yedekleme Stratejileri\">Etkili Yedekleme Stratejileri<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/#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_Neden_Onemlidir\"><\/span>Sunucu G\u00fcvenli\u011fi Neden \u00d6nemlidir?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Sunucular, bir web sitesinin, uygulaman\u0131n ya da veritaban\u0131n\u0131n arkas\u0131ndaki temel altyap\u0131y\u0131 olu\u015fturur. Sunucuya yap\u0131lan herhangi bir sald\u0131r\u0131, veri kayb\u0131, hizmet kesintisi ve maddi zarar gibi ciddi sonu\u00e7lar do\u011furabilir. Ayr\u0131ca, g\u00fcvenli\u011fi ihlal edilen bir sunucu k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlar\u0131n yay\u0131lmas\u0131na da zemin haz\u0131rlayabilir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Guclu_Bir_Firewall_Guvenlik_Duvari_Kurulumu\"><\/span>1. G\u00fc\u00e7l\u00fc Bir Firewall (G\u00fcvenlik Duvar\u0131) Kurulumu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Guvenlik_Duvari_Nedir\"><\/span>G\u00fcvenlik Duvar\u0131 Nedir?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Firewall, yetkisiz eri\u015fimleri engellemek i\u00e7in sunucunun gelen ve giden trafi\u011fini denetleyen bir g\u00fcvenlik sistemidir. Hem donan\u0131m tabanl\u0131 hem de yaz\u0131l\u0131m tabanl\u0131 olarak kurulabilir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hangi_Tur_Firewall_Kullanilmali\"><\/span>Hangi T\u00fcr Firewall Kullan\u0131lmal\u0131?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A\u011f Seviyesinde Firewall (Network Firewall)<\/strong>: T\u00fcm a\u011f\u0131 korur.<\/li>\n\n\n\n<li><strong>Sunucu Bazl\u0131 Firewall (Host-based Firewall)<\/strong>: Belirli bir sunucu i\u00e7in \u00f6zelle\u015ftirilir. (\u00d6rn: iptables, ufw)<\/li>\n\n\n\n<li><strong>Web Uygulama G\u00fcvenlik Duvar\u0131 (WAF)<\/strong>: Web uygulamalar\u0131n\u0131 hedef alan sald\u0131r\u0131lara kar\u015f\u0131 koruma sa\u011flar. (\u00d6rn: ModSecurity)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"En_Iyi_Uygulamalar\"><\/span>En \u0130yi Uygulamalar<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gereksiz portlar\u0131 kapat\u0131n.<\/li>\n\n\n\n<li>Yaln\u0131zca belirli IP\u2019lerden gelen ba\u011flant\u0131lara izin verin.<\/li>\n\n\n\n<li>SSH gibi servislerde IP k\u0131s\u0131tlamalar\u0131 uygulay\u0131n.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_DDoS_Dagitik_Hizmet_Reddi_Saldirilarina_Karsi_Koruma\"><\/span>2. DDoS (Da\u011f\u0131t\u0131k Hizmet Reddi) Sald\u0131r\u0131lar\u0131na Kar\u015f\u0131 Koruma<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DDoS_Nedir\"><\/span>DDoS Nedir?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>DDoS sald\u0131r\u0131lar\u0131, bir sunucunun veya a\u011f\u0131n kaynaklar\u0131n\u0131 t\u00fcketmek amac\u0131yla ayn\u0131 anda bir\u00e7ok noktadan yo\u011fun trafik g\u00f6nderilerek hizmetin eri\u015filemez hale getirilmesidir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DDoS_Koruma_Yontemleri\"><\/span>DDoS Koruma Y\u00f6ntemleri<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Trafik Filtreleme<\/strong>: CDN ve WAF kullanarak k\u00f6t\u00fc niyetli trafi\u011fi engelleyin.<\/li>\n\n\n\n<li><strong>Rate Limiting<\/strong>: IP ba\u015f\u0131na istek say\u0131s\u0131n\u0131 s\u0131n\u0131rlayarak sunucunun y\u00fck\u00fcn\u00fc azalt\u0131n.<\/li>\n\n\n\n<li><strong>Anti-DDoS Servisleri<\/strong>: Cloudflare, Akamai, AWS Shield gibi profesyonel \u00e7\u00f6z\u00fcmler kullan\u0131n.<\/li>\n\n\n\n<li><strong>Y\u00fck Dengeleme (Load Balancing)<\/strong>: Trafi\u011fi farkl\u0131 sunuculara da\u011f\u0131tarak yo\u011funlu\u011fu azalt\u0131n.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Yazilim_ve_Sistem_Guncellemeleri\"><\/span>3. Yaz\u0131l\u0131m ve Sistem G\u00fcncellemeleri<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Guncel_Sistemler_Neden_Onemlidir\"><\/span>G\u00fcncel Sistemler Neden \u00d6nemlidir?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Eski s\u00fcr\u00fcm yaz\u0131l\u0131mlar, bilinen g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 i\u00e7erir ve sald\u0131rganlar bu a\u00e7\u0131klar\u0131 kolayl\u0131kla istismar edebilir. Yaz\u0131l\u0131m ve i\u015fletim sisteminizi g\u00fcncel tutmak, bilinen zafiyetlere kar\u015f\u0131 en etkili savunmad\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Guncelleme_Stratejileri\"><\/span>G\u00fcncelleme Stratejileri<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Otomatik G\u00fcncellemeler<\/strong>: G\u00fcvenlik g\u00fcncellemeleri i\u00e7in otomatik g\u00fcncelleme mekanizmas\u0131n\u0131 aktif hale getirin.<\/li>\n\n\n\n<li><strong>Paket Takibi<\/strong>: Kullan\u0131lan yaz\u0131l\u0131mlar i\u00e7in g\u00fcncelleme duyurular\u0131n\u0131 d\u00fczenli olarak takip edin.<\/li>\n\n\n\n<li><strong>Versiyon Takibi<\/strong>: PHP, Apache, Nginx, MySQL gibi servislerin g\u00fcncel s\u00fcr\u00fcmlerini kullan\u0131n.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Erisim_Kontrolu_ve_Kimlik_Dogrulama\"><\/span>4. Eri\u015fim Kontrol\u00fc ve Kimlik Do\u011frulama<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Yetkisiz_Girisleri_Engelleyin\"><\/span>Yetkisiz Giri\u015fleri Engelleyin<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SSH Anahtar Tabanl\u0131 Giri\u015f<\/strong>: Parola yerine daha g\u00fcvenli olan SSH anahtarlar\u0131n\u0131 kullan\u0131n.<\/li>\n\n\n\n<li><strong>Fail2Ban<\/strong>: Belirli say\u0131da ba\u015far\u0131s\u0131z giri\u015ften sonra IP&#8217;yi otomatik olarak engelleyen ara\u00e7.<\/li>\n\n\n\n<li><strong>2FA (\u0130ki Fakt\u00f6rl\u00fc Kimlik Do\u011frulama)<\/strong>: Sunucu y\u00f6netimi panelleri ve y\u00f6netici eri\u015fimi i\u00e7in mutlaka kullan\u0131n.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Loglama_ve_Izleme_Sistemleri\"><\/span>5. Loglama ve \u0130zleme Sistemleri<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Izleme_Neden_Gereklidir\"><\/span>\u0130zleme Neden Gereklidir?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Sunucuda olup bitenleri anlamak i\u00e7in log kay\u0131tlar\u0131n\u0131n d\u00fczenli olarak izlenmesi gerekir. Bu sayede anormal davran\u0131\u015flar erken tespit edilebilir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Kullanilabilecek_Izleme_Araclari\"><\/span>Kullan\u0131labilecek \u0130zleme Ara\u00e7lar\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Logwatch \/ Logrotate<\/strong>: Linux sunucularda log y\u00f6netimi.<\/li>\n\n\n\n<li><strong>Nagios \/ Zabbix \/ Prometheus<\/strong>: Ger\u00e7ek zamanl\u0131 sistem ve servis izleme.<\/li>\n\n\n\n<li><strong>Fail2Ban<\/strong>: K\u00f6t\u00fc niyetli giri\u015f denemelerini tespit ederek otomatik olarak m\u00fcdahale eder.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Yedekleme_ve_Olasi_Saldiriya_Hazirlik\"><\/span>6. Yedekleme ve Olas\u0131 Sald\u0131r\u0131ya Haz\u0131rl\u0131k<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Yedekleme_Neden_Olmazsa_Olmaz\"><\/span>Yedekleme Neden Olmazsa Olmaz?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Her zaman en k\u00f6t\u00fc senaryo d\u00fc\u015f\u00fcn\u00fclmeli. D\u00fczenli olarak al\u0131nan yedekler, olas\u0131 bir sald\u0131r\u0131 sonras\u0131 sistemi h\u0131zl\u0131ca eski haline d\u00f6nd\u00fcrmeyi sa\u011flar.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Etkili_Yedekleme_Stratejileri\"><\/span>Etkili Yedekleme Stratejileri<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>G\u00fcnl\u00fck\/Haftal\u0131k Otomatik Yedekleme<\/strong><\/li>\n\n\n\n<li><strong>Harici Lokasyonda Saklama<\/strong><\/li>\n\n\n\n<li><strong>\u015eifreli Yedekleme Dosyalar\u0131<\/strong><\/li>\n\n\n\n<li><strong>Yedeklerin Geri Y\u00fcklenme Testi<\/strong><\/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, tek bir uygulama ya da ara\u00e7la sa\u011flanamayacak kadar kapsaml\u0131 ve \u00e7ok katmanl\u0131 bir s\u00fcre\u00e7tir. G\u00fcvenlik duvar\u0131, DDoS korumas\u0131, g\u00fcncellemeler, eri\u015fim kontrolleri ve yedekleme sistemleri birlikte \u00e7al\u0131\u015ft\u0131\u011f\u0131nda g\u00fc\u00e7l\u00fc bir koruma kalkan\u0131 olu\u015fturur. Bu stratejileri d\u00fczenli olarak g\u00f6zden ge\u00e7irip uygulamak, sunucular\u0131n\u0131z\u0131 hem d\u0131\u015f tehditlere hem de i\u00e7 zafiyetlere kar\u015f\u0131 koruman\u0131z\u0131 sa\u011flar.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sunucu g\u00fcvenli\u011fi, hem bireysel kullan\u0131c\u0131lar hem de kurumsal firmalar i\u00e7in<a href=\"https:\/\/www.cenuta.com\/blog\/sunucu-guvenligi-nasil-saglanir-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/\">&#8230;<\/a><\/p>\n","protected":false},"author":4,"featured_media":23324,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[356,622],"class_list":["post-23323","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sunucu","tag-guvenlik","tag-sunucu"],"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-firewall-ddos-korumasi-ve-guncelleme-stratejileri\/\" \/>\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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