{"id":283,"date":"2025-11-18T08:53:46","date_gmt":"2025-11-18T08:53:46","guid":{"rendered":"https:\/\/kriweb.info\/bilgi-bankasi\/firewall\/"},"modified":"2025-11-25T10:28:08","modified_gmt":"2025-11-25T10:28:08","slug":"firewall-nedir-nasil-calisir","status":"publish","type":"post","link":"https:\/\/kriweb.com\/bilgi-bankasi\/firewall-nedir-nasil-calisir\/","title":{"rendered":"Firewall (G\u00fcvenlik Duvar\u0131) Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\"><strong>Firewall Nedir? Firewall Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/strong><\/h1>\n\n\n\n<p><strong>Firewall nedir? Firewall nas\u0131l \u00e7al\u0131\u015f\u0131r?<\/strong> Bu iki soru, sunucu ve web sitesi g\u00fcvenli\u011fiyle ilgilenen herkesin mutlaka bilmesi gereken konular\u0131n ba\u015f\u0131nda gelir. Firewall (G\u00fcvenlik Duvar\u0131), bir sunucuya gelen ve sunucudan \u00e7\u0131kan t\u00fcm veri trafi\u011fini kontrol eden g\u00fcvenlik sistemidir. Temel amac\u0131, zararl\u0131 trafi\u011fi engelleyip yaln\u0131zca g\u00fcvenli ve izin verilen ba\u011flant\u0131lar\u0131n ge\u00e7i\u015fine izin vermektir. Bu sayede sisteminizi DDoS sald\u0131r\u0131lar\u0131ndan k\u00f6t\u00fc ama\u00e7l\u0131 botlara kadar bir\u00e7ok tehdide kar\u015f\u0131 korur.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Firewall Neden Gereklidir?<\/strong><\/h2>\n\n\n\n<p>Firewall, yaln\u0131zca sald\u0131r\u0131lar\u0131 engellemekle kalmaz; ayn\u0131 zamanda veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc korur, altyap\u0131 performans\u0131n\u0131 art\u0131r\u0131r ve yetkisiz eri\u015fim giri\u015fimlerini s\u0131f\u0131ra indirir. Bu nedenle \u00f6zellikle hosting, sunucu, e-ticaret ve kurumsal web projelerinde vazge\u00e7ilmez bir g\u00fcvenlik bile\u015fenidir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Firewall Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/strong><\/h2>\n\n\n\n<p>Firewall, gelen veri paketlerini filtreleyerek \u00e7al\u0131\u015f\u0131r. Paketlerin kayna\u011f\u0131, hedefi, port bilgisi ve trafi\u011fin davran\u0131\u015f\u0131 analiz edilir. Ard\u0131ndan bu veriler g\u00fcvenlik kurallar\u0131na g\u00f6re de\u011ferlendirilir. E\u011fer trafik g\u00fcvenli de\u011filse an\u0131nda engellenir. Bu i\u015flem ger\u00e7ek zamanl\u0131 ve s\u00fcrekli olarak ger\u00e7ekle\u015fir.<\/p>\n\n\n\n<p>Ayr\u0131ca modern firewall sistemleri yaln\u0131zca a\u011f katman\u0131n\u0131 de\u011fil, uygulama katman\u0131n\u0131 da analiz eder. B\u00f6ylece SQL injection, brute-force gibi uygulama seviyesindeki sald\u0131r\u0131lar da engellenir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>KRIWEB\u2019de Firewall Ne Sa\u011flar?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. DDoS Korumas\u0131<\/strong><\/h3>\n\n\n\n<p>Otomatik sald\u0131r\u0131 tespit sistemi, y\u00fcksek hacimli DDoS sald\u0131r\u0131lar\u0131n\u0131 alg\u0131lar ve trafik filtreleme yaparak hizmet kesintisini \u00f6nler.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. IP ve \u00dclke Engelleme (Geo-Block)<\/strong><\/h3>\n\n\n\n<p>Belirli IP adreslerini, bot kaynaklar\u0131n\u0131 veya \u00fclkeleri engelleyerek g\u00fcvenlik politikalar\u0131n\u0131z\u0131 \u00f6zelle\u015ftirebilirsiniz.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Uygulama Katman\u0131 G\u00fcvenli\u011fi<\/strong><\/h3>\n\n\n\n<p>Web uygulamalar\u0131na y\u00f6nelik OWASP Top 10 tehditlerine kar\u015f\u0131 \u00f6zel kurallar uygulan\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. 7\/24 G\u00fcvenlik \u0130zleme<\/strong><\/h3>\n\n\n\n<p>KRIWEB g\u00fcvenlik ekibi firewall trafi\u011fini s\u00fcrekli izler ve \u015f\u00fcpheli durumlarda an\u0131nda m\u00fcdahale eder.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Firewall Kimler \u0130\u00e7in Zorunludur?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>E-ticaret siteleri<\/li>\n\n\n\n<li>Kurumsal web siteleri<\/li>\n\n\n\n<li>Sunucu bar\u0131nd\u0131ran \u015firketler<\/li>\n\n\n\n<li>Kritik verilerle \u00e7al\u0131\u015fan projeler<\/li>\n\n\n\n<li>Y\u00fcksek trafikli platformlar<\/li>\n<\/ul>\n\n\n\n<p>Firewall olmadan bu projeler ciddi risk alt\u0131ndad\u0131r. <a href=\"https:\/\/api.whatsapp.com\/send\/?phone=908504410574&amp;text&amp;type=phone_number&amp;app_absent=0\">Uzman destek ekibimizle g\u00f6r\u00fc\u015f\u00fcp detayl\u0131 bilgi alabilirsiniz.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Firewall Nedir? Firewall Nas\u0131l \u00c7al\u0131\u015f\u0131r? Firewall nedir? Firewall nas\u0131l \u00e7al\u0131\u015f\u0131r? Bu iki soru, sunucu ve web sitesi g\u00fcvenli\u011fiyle ilgilenen herkesin mutlaka bilmesi gereken konular\u0131n ba\u015f\u0131nda gelir. Firewall (G\u00fcvenlik Duvar\u0131), bir sunucuya gelen ve sunucudan \u00e7\u0131kan t\u00fcm veri trafi\u011fini kontrol eden g\u00fcvenlik sistemidir. Temel amac\u0131, zararl\u0131 trafi\u011fi engelleyip yaln\u0131zca g\u00fcvenli ve izin verilen ba\u011flant\u0131lar\u0131n ge\u00e7i\u015fine izin [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-283","post","type-post","status-publish","format-standard","hentry","category-teknik-destek-ve-sorun-giderme"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Firewall (G\u00fcvenlik Duvar\u0131) Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r? -<\/title>\n<meta name=\"description\" content=\"Firewall nedir ve nas\u0131l \u00e7al\u0131\u015f\u0131r? 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