{"id":2949,"date":"2025-01-05T16:40:07","date_gmt":"2025-01-05T16:40:07","guid":{"rendered":"https:\/\/yedinet.com\/?p=2949"},"modified":"2026-10-26T14:31:05","modified_gmt":"2026-10-26T11:31:05","slug":"fail2ban-bruteforce-korumasi","status":"publish","type":"post","link":"https:\/\/yedinet.com\/blog\/fail2ban-bruteforce-korumasi\/","title":{"rendered":"Fail2Ban Bruteforce Korumas\u0131"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/5483248-1024x683.jpeg\" alt=\"Close-up of a laptop displaying cybersecurity text, emphasizing digital security themes.\" class=\"wp-image-4520\" srcset=\"https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/5483248-1024x683.jpeg 1024w, https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/5483248-300x200.jpeg 300w, https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/5483248-768x512.jpeg 768w, https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/5483248-1536x1024.jpeg 1536w, https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/5483248.jpeg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Fail2ban, VDS sunucunuza yetkisiz eri\u015fim denemesi yapan veya kaba kuvvet (brute-force) sald\u0131r\u0131lar\u0131 ger\u00e7ekle\u015ftiren zararl\u0131 IP adreslerini otomatik olarak tespit edip yasaklayarak altyap\u0131n\u0131z\u0131 korur. Sistem log dosyalar\u0131n\u0131 (\u00f6rne\u011fin <code>\/var\/log\/apache\/error_log<\/code> gibi) tarayarak \u015f\u00fcpheli etkinlikleri yakalar ve \u00e7e\u015fitli servisler i\u00e7in haz\u0131r g\u00fcvenlik filtreleri sunar.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fail2ban Kurulum \u00d6ncesi Haz\u0131rl\u0131k<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Bu rehberdeki komutlar\u0131 \u00e7al\u0131\u015ft\u0131rmak i\u00e7in sunucunuza <code>root<\/code> kullan\u0131c\u0131s\u0131 veya <code>sudo<\/code> yetkilerine sahip bir hesap ile giri\u015f yapm\u0131\u015f olman\u0131z gerekir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ad\u0131m Ad\u0131m AlmaLinux 8 \u00dczerine Fail2ban Kurulumu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">AlmaLinux 8 \u00fczerinde Fail2ban kurmak i\u00e7in s\u0131ras\u0131yla \u015fu ad\u0131mlar\u0131 izleyin:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Ad\u0131m 1 \u2013 VDS Sistemini G\u00fcncelleyin<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Kurulum \u00f6ncesinde paket listelerini ve sisteminizi g\u00fcncel tutmak i\u00e7in \u015fu komutu \u00e7al\u0131\u015ft\u0131r\u0131n:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bash<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo dnf -y update\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Ad\u0131m 2 \u2013 EPEL Repositorisini Y\u00fckleyin<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Fail2ban, resmi CentOS veya AlmaLinux paket depolar\u0131nda do\u011frudan yer almaz; kurumsal Linux da\u011f\u0131t\u0131mlar\u0131 i\u00e7in Ekstra Paketler (EPEL) havuzunda bulunur. En son EPEL s\u00fcr\u00fcm\u00fcn\u00fc sunucunuza y\u00fcklemek i\u00e7in \u015fu komutu girin:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bash<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo dnf -y install epel-release\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/mwlphlbgju0-1024x768.jpg\" alt=\"Green text displaying code on a dark computer screen\" class=\"wp-image-4521\" srcset=\"https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/mwlphlbgju0-1024x768.jpg 1024w, https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/mwlphlbgju0-300x225.jpg 300w, https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/mwlphlbgju0-768x576.jpg 768w, https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/mwlphlbgju0-1536x1152.jpg 1536w, https:\/\/yedinet.com\/blog\/wp-content\/uploads\/2026\/10\/mwlphlbgju0.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u00d6ZET<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fail2ban, log dosyalar\u0131n\u0131 tarayarak kaba kuvvet sald\u0131r\u0131s\u0131 yapan IP adreslerini otomatik olarak engeller.<\/li>\n\n\n\n<li>Kurulum i\u00e7in \u00f6ncelikle sistem g\u00fcncellemesi yap\u0131lmal\u0131 ve EPEL deposu etkinle\u015ftirilmelidir.<\/li>\n\n\n\n<li>Ara\u00e7; Apache, SSH ve benzeri pek \u00e7ok servis i\u00e7in haz\u0131r g\u00fcvenlik filtreleri bar\u0131nd\u0131r\u0131r.<\/li>\n\n\n\n<li>\u0130\u015flemlerin sorunsuz tamamlanabilmesi i\u00e7in <code>root<\/code> veya <code>sudo<\/code> haklar\u0131yla komutlar\u0131n \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131 gerekir.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">S\u0131k Sorulan Sorular (SSS)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Soru 1: Fail2ban hangi sald\u0131r\u0131 t\u00fcrlerini engeller?<\/strong> Cevap: Temel olarak SSH, Apache, FTP ve benzeri servislerdeki art arda ba\u015far\u0131s\u0131z giri\u015f veya kaba kuvvet (brute-force) denemelerini tespit ederek engeller.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Soru 2: EPEL deposu neden gereklidir?<\/strong> Cevap: Fail2ban paketi standart AlmaLinux depolar\u0131nda bulunmad\u0131\u011f\u0131ndan, ek yaz\u0131l\u0131mlar\u0131n bar\u0131nd\u0131\u011f\u0131 EPEL deposunun kurulmas\u0131 zorunludur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Soru 3: Engellenen IP adreslerinin s\u00fcresi kal\u0131c\u0131 m\u0131d\u0131r?<\/strong> Cevap: Varsay\u0131lan ayarlarda belirli bir s\u00fcre yasaklama yap\u0131l\u0131r; ancak bu s\u00fcre yap\u0131land\u0131rma dosyalar\u0131ndan \u00f6zelle\u015ftirilebilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Servis ve paketlerimizi g\u00f6rmek ve bilgi almak i\u00e7in <a href=\"https:\/\/yedinet.com\/\">sayfam\u0131z\u0131<\/a> ziyaret edebilirsiniz. Benzer konular hakk\u0131nda bilgi ve destek almak i\u00e7in <a href=\"https:\/\/yedinet.com\/blog\/\">blogumuza<\/a> ba\u015fvurabilirsiniz.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fail2ban, VDS sunucunuza yetkisiz eri\u015fim denemesi yapan veya kaba kuvvet (brute-force) sald\u0131r\u0131lar\u0131 ger\u00e7ekle\u015ftiren zararl\u0131 IP adreslerini otomatik olarak tespit edip yasaklayarak altyap\u0131n\u0131z\u0131 korur.<\/p>\n","protected":false},"author":1,"featured_media":2950,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,8,41,50],"tags":[47,48,44,49,34,36,38,9,30],"class_list":["post-2949","post","type-post","status-publish","format-standard","hentry","category-sunucu","category-tum-yazilar","category-unix-linux","category-yardim-masasi","tag-bruteforce","tag-fail2ban","tag-guvenlik","tag-koruma","tag-sanal","tag-sunucu","tag-vds","tag-yedinet","tag-yukleme"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - 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