{"id":22288,"date":"2025-05-27T09:30:17","date_gmt":"2025-05-27T06:30:17","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz\/"},"modified":"2025-05-27T09:30:17","modified_gmt":"2025-05-27T06:30:17","slug":"web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz\/","title":{"rendered":"Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF): Yeni Ba\u015flayanlar \u0130\u00e7in Tam Bir K\u0131lavuz"},"content":{"rendered":"<p><body><\/p>\n<p>Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF): Yeni Ba\u015flayanlar \u0130\u00e7in Tam Bir K\u0131lavuz<\/p>\n<p>\u0130nternet d\u00fcnyas\u0131nda g\u00fcvenlik her zamankinden daha \u00f6nemli.  Web uygulamalar\u0131n\u0131z\u0131n g\u00fcvenli\u011fini sa\u011flamak i\u00e7in bir\u00e7ok y\u00f6ntem mevcut.  Bunlardan biri de Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF&#8217;ler).  Peki, bir WAF nedir ve nas\u0131l \u00e7al\u0131\u015f\u0131r? Bu yaz\u0131da, yeni ba\u015flayanlar i\u00e7in WAF&#8217;leri ayr\u0131nt\u0131l\u0131 bir \u015fekilde ele alaca\u011f\u0131z.  Umar\u0131m bu makale size WAF&#8217;ler hakk\u0131nda derinlemesine bilgi sa\u011flar.<\/p>\n<h2>WAF Nedir?<\/h2>\n<p>WAF, k\u0131saca Web Uygulama G\u00fcvenlik Duvar\u0131 anlam\u0131na gelir.  \u00d6zetle, web uygulamalar\u0131n\u0131z\u0131 k\u00f6t\u00fc ama\u00e7l\u0131 trafi\u011fe kar\u015f\u0131 koruyan bir g\u00fcvenlik katman\u0131d\u0131r.  Bir WAF, web sunucular\u0131n\u0131z ile internet aras\u0131nda yer alarak, gelen t\u00fcm istekleri filtreler ve zararl\u0131 istekleri engeller.  Bu sayede, web sitenizin g\u00fcvenli\u011fi \u00f6nemli \u00f6l\u00e7\u00fcde artar.  D\u00fc\u015f\u00fcn\u00fcn ki,  bir bina g\u00fcvenlik g\u00f6revlisine benziyor; yetkisiz ki\u015fileri engellemekle g\u00f6revlidir.<\/p>\n<h2>WAF Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h2>\n<p>WAF&#8217;ler, \u00e7e\u015fitli teknikler kullanarak zararl\u0131 istekleri tespit eder ve engeller.  Bunlardan baz\u0131lar\u0131 \u015funlard\u0131r:  IP adreslerini kontrol etme,  belirli kelimeleri ve kal\u0131plar\u0131 arama (\u00f6rne\u011fin, SQL injection denemeleri),  anormal istek s\u0131kl\u0131\u011f\u0131n\u0131 tespit etme (DDoS sald\u0131r\u0131lar\u0131) ve daha fazlas\u0131.  Bir WAF,  \u00f6nceden tan\u0131mlanm\u0131\u015f kurallar k\u00fcmesi veya makine \u00f6\u011frenmesi algoritmalar\u0131 kullanarak \u00e7al\u0131\u015fabilir.  Bu kurallar, s\u0131k kar\u015f\u0131la\u015f\u0131lan sald\u0131r\u0131 t\u00fcrlerini engellemek i\u00e7in kullan\u0131l\u0131r.  Sonu\u00e7 olarak,  web sitenizin g\u00fcvenli\u011fini g\u00fc\u00e7lendirir.<\/p>\n<h2>WAF&#8217;lerin Avantajlar\u0131<\/h2>\n<p>WAF kullanman\u0131n bir\u00e7ok avantaj\u0131 vard\u0131r.  Bunlardan en \u00f6nemlisi, web uygulamalar\u0131n\u0131z\u0131 \u00e7e\u015fitli sald\u0131r\u0131lardan korumas\u0131d\u0131r.  SQL injection, cross-site scripting (XSS),  DDoS sald\u0131r\u0131lar\u0131 gibi yayg\u0131n tehditlere kar\u015f\u0131 bir savunma hatt\u0131 olu\u015fturur.  Ayr\u0131ca, WAF&#8217;ler, g\u00fcvenlik ekiplerinin i\u015f y\u00fck\u00fcn\u00fc azalt\u0131r.  Otomatik olarak zararl\u0131 istekleri engelledi\u011fi i\u00e7in, g\u00fcvenlik uzmanlar\u0131n\u0131n manuel olarak tehditleri analiz etme s\u00fcresi azal\u0131r.  G\u00fcvenli\u011fi otomatikle\u015ftirerek zaman tasarrufu sa\u011flar.  Sonu\u00e7 olarak,  i\u015fletmeler daha verimli \u00e7al\u0131\u015fabilir.<\/p>\n<h2>WAF&#8217;lerin Dezavantajlar\u0131<\/h2>\n<p>Her g\u00fcvenlik \u00e7\u00f6z\u00fcm\u00fcnde oldu\u011fu gibi, WAF&#8217;lerin de baz\u0131 dezavantajlar\u0131 vard\u0131r.  Bunlardan biri,  yanl\u0131\u015f pozitiflerin ortaya \u00e7\u0131kmas\u0131d\u0131r.  WAF,  zararl\u0131 olmayan istekleri yanl\u0131\u015fl\u0131kla zararl\u0131 olarak alg\u0131layabilir ve engelleme yapabilir.  Bu durum,  kullan\u0131c\u0131 deneyimini olumsuz etkileyebilir.  Ayr\u0131ca,  karma\u015f\u0131k yap\u0131land\u0131rmalar\u0131 ve y\u00fcksek maliyetleri de dezavantajlar aras\u0131nda say\u0131labilir.  \u00d6rne\u011fin,  bir WAF&#8217;in do\u011fru \u015fekilde yap\u0131land\u0131r\u0131lmas\u0131 uzmanl\u0131k gerektirir ve bu da maliyetleri art\u0131rabilir.  Bunlar\u0131 dikkatlice de\u011ferlendirmeniz gerekir.<\/p>\n<h2>Hangi WAF&#8217;i Se\u00e7melisiniz?<\/h2>\n<p>Piyasada bir\u00e7ok farkl\u0131 WAF \u00e7\u00f6z\u00fcm\u00fc mevcuttur.  Do\u011fru WAF&#8217;i se\u00e7mek i\u00e7in,  i\u015fletmenizin ihtiya\u00e7lar\u0131n\u0131, b\u00fct\u00e7enizi ve teknik becerilerinizi g\u00f6z \u00f6n\u00fcnde bulundurman\u0131z \u00f6nemlidir.  Baz\u0131 WAF&#8217;ler bulut tabanl\u0131d\u0131r, baz\u0131lar\u0131 ise yerel olarak kurulur.  Ayr\u0131ca,  farkl\u0131 WAF&#8217;lerin farkl\u0131 \u00f6zelliklere ve fiyatland\u0131rma modellerine sahip oldu\u011funu unutmamak gerekir.  \u0130htiya\u00e7lar\u0131n\u0131za en uygun olan\u0131 se\u00e7mek i\u00e7in detayl\u0131 bir ara\u015ft\u0131rma yapmal\u0131s\u0131n\u0131z.  Bu se\u00e7imi yaparken dikkatli olmak \u00f6nemlidir.<\/p>\n<h2>Sonu\u00e7<\/h2>\n<p>Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF&#8217;ler),  web uygulamalar\u0131n\u0131z\u0131n g\u00fcvenli\u011fini sa\u011flamak i\u00e7in \u00f6nemli bir ara\u00e7t\u0131r.  Ancak,  WAF&#8217;lerin m\u00fckemmel olmad\u0131\u011f\u0131n\u0131 ve baz\u0131 dezavantajlar\u0131n\u0131n oldu\u011funu da unutmamak gerekir.  Do\u011fru WAF&#8217;i se\u00e7mek ve do\u011fru \u015fekilde yap\u0131land\u0131rmak,  web sitenizin g\u00fcvenli\u011fi i\u00e7in \u00e7ok \u00f6nemlidir. Daha fazla bilgi i\u00e7in <a href=\"https:\/\/fatihsoysal.com\">fatihsoysal.com<\/a> adresini ziyaret edebilirsiniz.<\/p>\n<p>#Etiketler: WAF, Web Uygulama G\u00fcvenlik Duvar\u0131, g\u00fcvenlik, siber g\u00fcvenlik, web g\u00fcvenli\u011fi, DDoS sald\u0131r\u0131s\u0131, SQL injection, XSS, uygulama g\u00fcvenli\u011fi,  bulut g\u00fcvenli\u011fi,  web uygulama g\u00fcvenli\u011fi,  internet g\u00fcvenli\u011fi<\/p>\n<p><\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF): Yeni Ba\u015flayanlar \u0130\u00e7in Tam Bir K\u0131lavuz \u0130nternet d\u00fcnyas\u0131nda g\u00fcvenlik her zamankinden daha \u00f6nemli.&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-22288","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF): Yeni Ba\u015flayanlar \u0130\u00e7in Tam Bir K\u0131lavuz<\/title>\n<meta name=\"description\" content=\"\u0130nternet d\u00fcnyas\u0131nda g\u00fcvenlik her zamankinden daha \u00f6nemli. Web uygulamalar\u0131n\u0131z\u0131n g\u00fcvenli\u011fini sa\u011flamak i\u00e7in bir\u00e7ok y\u00f6ntem mevcut. Bunlardan biri de Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF&#039;ler). Peki, bir WAF nedir ve nas\u0131l \u00e7al\u0131\u015f\u0131r? Bu yaz\u0131da, yeni ba\u015flayanlar i\u00e7in WAF&#039;leri ayr\u0131nt\u0131l\u0131 bir \u015fekilde ele alaca\u011f\u0131z. Umar\u0131m bu makale size WAF&#039;ler hakk\u0131nda derinlemesine bilgi sa\u011flar.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF): Yeni Ba\u015flayanlar \u0130\u00e7in Tam Bir K\u0131lavuz\" \/>\n<meta property=\"og:description\" content=\"\u0130nternet d\u00fcnyas\u0131nda g\u00fcvenlik her zamankinden daha \u00f6nemli. Web uygulamalar\u0131n\u0131z\u0131n g\u00fcvenli\u011fini sa\u011flamak i\u00e7in bir\u00e7ok y\u00f6ntem mevcut. Bunlardan biri de Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF&#039;ler). Peki, bir WAF nedir ve nas\u0131l \u00e7al\u0131\u015f\u0131r? Bu yaz\u0131da, yeni ba\u015flayanlar i\u00e7in WAF&#039;leri ayr\u0131nt\u0131l\u0131 bir \u015fekilde ele alaca\u011f\u0131z. Umar\u0131m bu makale size WAF&#039;ler hakk\u0131nda derinlemesine bilgi sa\u011flar.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-27T06:30:17+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF): Yeni Ba\u015flayanlar \u0130\u00e7in Tam Bir K\u0131lavuz\",\"datePublished\":\"2025-05-27T06:30:17+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz\/\"},\"wordCount\":659,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz\/#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/web-uygulama-guvenlik-duvarlari-waf-yeni-baslayanlar-icin-tam-bir-kilavuz\/\",\"name\":\"Web Uygulama G\u00fcvenlik Duvarlar\u0131 (WAF): Yeni Ba\u015flayanlar \u0130\u00e7in Tam Bir K\u0131lavuz\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2025-05-27T06:30:17+00:00\",\"description\":\"\u0130nternet d\u00fcnyas\u0131nda g\u00fcvenlik her zamankinden daha \u00f6nemli. 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