{"id":25,"date":"2025-11-20T07:56:19","date_gmt":"2025-11-20T07:56:19","guid":{"rendered":"https:\/\/www.aliburaksan.com\/blog\/?p=25"},"modified":"2025-11-22T00:56:43","modified_gmt":"2025-11-22T00:56:43","slug":"guvenlik-duvari-yonetimi-kritik-noktalar","status":"publish","type":"post","link":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/","title":{"rendered":"G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar**"},"content":{"rendered":"<div class=\"container\">\n<h1>Firewall Kurallar\u0131nda Dikkat Edilmesi Gerekenler: G\u00fcvenli\u011fin Kalbi<\/h1>\n<p>Merhaba arkada\u015flar! IT sekt\u00f6r\u00fcnde yakla\u015f\u0131k 2-3 y\u0131ld\u0131r aktif olarak var\u0131m ve bu s\u00fcre\u00e7te en \u00e7ok \u00fczerinde durdu\u011fum, belki de en \u00e7ok hata yap\u0131p ders \u00e7\u0131kard\u0131\u011f\u0131m konulardan biri firewall kurallar\u0131 oldu. G\u00fcn\u00fcm\u00fcz\u00fcn karma\u015f\u0131k siber tehdit ortam\u0131nda, network g\u00fcvenli\u011fimizin temel ta\u015f\u0131 firewall&#8217;lar ve onlar\u0131n do\u011fru yap\u0131land\u0131r\u0131lm\u0131\u015f kurallar\u0131. Bu yaz\u0131da, firewall kurallar\u0131n\u0131 yazarken ve y\u00f6netirken nelere dikkat etmemiz gerekti\u011fini, kendi tecr\u00fcbelerimden yola \u00e7\u0131karak aktarmak istiyorum. Amac\u0131m, &#8220;Ben her \u015feyi biliyorum&#8221; demekten ziyade, &#8220;Ben bunlar\u0131 ara\u015ft\u0131rd\u0131m, uygulad\u0131m ve sonu\u00e7lar\u0131 bunlar&#8221; demek.<\/p>\n<h2>Firewall Kurallar\u0131 Neden Bu Kadar Kritik?<\/h2>\n<p>Firewall&#8217;lar, ad\u0131ndan da anla\u015f\u0131laca\u011f\u0131 gibi, a\u011f\u0131m\u0131za gelen ve giden trafi\u011fi kontrol eden bir t\u00fcr g\u00fcvenlik duvar\u0131d\u0131r. Ancak bu duvar\u0131n ne kadar sa\u011flam oldu\u011fu, sizin belirledi\u011finiz kurallara ba\u011fl\u0131d\u0131r. K\u00f6t\u00fc yaz\u0131lm\u0131\u015f bir kural, t\u00fcm sistemimizi potansiyel tehlikelere a\u00e7\u0131k hale getirebilirken, do\u011fru ve optimize edilmi\u015f kurallar, hem g\u00fcvenli\u011fi art\u0131r\u0131r hem de a\u011f performans\u0131n\u0131 olumsuz etkilemez. Benim de kariyerimin ba\u015flar\u0131nda, &#8220;Bir port a\u00e7al\u0131m da \u00e7al\u0131\u015fs\u0131n yeter!&#8221; mant\u0131\u011f\u0131yla hareket etti\u011fim oldu, ancak k\u0131sa s\u00fcrede bunun ne kadar tehlikeli bir yakla\u015f\u0131m oldu\u011funu anlad\u0131m.<\/p>\n<h2>Peki, Bir Firewall Kural\u0131 Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h2>\n<p>Temel olarak, bir firewall paketin belirli \u00f6zelliklerine (kaynak IP adresi, hedef IP adresi, kaynak port, hedef port, protokol t\u00fcr\u00fc gibi) bakarak ona izin verip vermeyece\u011fine veya engelleyip engellemeyece\u011fine karar verir. Modern firewall&#8217;lar (Next-Generation Firewalls &#8211; NGFW) bu temel \u00f6zelliklerin \u00f6tesine ge\u00e7erek uygulama baz\u0131nda, kullan\u0131c\u0131 baz\u0131nda veya hatta tehdit istihbarat\u0131na g\u00f6re kararlar alabiliyor. Ancak i\u015fin \u00f6z\u00fc, her zaman paket filtrelemedir.<\/p>\n<p>Bir kural genellikle \u015fu bile\u015fenlerden olu\u015fur:<\/p>\n<ul>\n<li><strong>Kaynak (Source):<\/strong> Trafi\u011fin nereden geldi\u011fi (IP adresi, a\u011f blo\u011fu, \u00fclke vb.).<\/li>\n<li><strong>Hedef (Destination):<\/strong> Trafi\u011fin nereye gitti\u011fi (IP adresi, a\u011f blo\u011fu, sunucu vb.).<\/li>\n<li><strong>Port (Port):<\/strong> Kullan\u0131lan servis (HTTP i\u00e7in 80, HTTPS i\u00e7in 443, SSH i\u00e7in 22 vb.).<\/li>\n<li><strong>Protokol (Protocol):<\/strong> Trafi\u011fin t\u00fcr\u00fc (TCP, UDP, ICMP vb.).<\/li>\n<li><strong>Eylem (Action):<\/strong> Trafi\u011fe yap\u0131lacak i\u015flem (ACCEPT\/ALLOW, DROP\/DENY, REJECT).<\/li>\n<\/ul>\n<h2>Uygulama Senaryosu: Yeni Bir Web Sunucusuna Eri\u015fim \u0130zni<\/h2>\n<p>\u015eirketimizde yeni bir i\u00e7 web uygulamas\u0131 yay\u0131na al\u0131nd\u0131\u011f\u0131n\u0131 varsayal\u0131m. Bu web sunucusu, <code>192.168.10.50<\/code> IP adresinde \u00e7al\u0131\u015f\u0131yor ve sadece i\u00e7 a\u011f\u0131m\u0131zdaki belirli bir departman\u0131n (<code>192.168.1.0\/24<\/code> a\u011f\u0131) HTTP (80) ve HTTPS (443) \u00fczerinden eri\u015fmesine izin verilmesi gerekiyor. \u0130\u015fte burada, ad\u0131m ad\u0131m nas\u0131l bir kural setini d\u00fc\u015f\u00fcnd\u00fc\u011f\u00fcm\u00fc ve uygulad\u0131\u011f\u0131m\u0131 g\u00f6stermek istiyorum. Genellikle Linux tabanl\u0131 sunucularda `iptables` ile \u00e7al\u0131\u015ft\u0131\u011f\u0131m\u0131z i\u00e7in bir \u00f6rnek \u00fczerinden gidelim:<\/p>\n<pre><code>\n# Mevcut kurallar\u0131 listeleyelim (kontrol ama\u00e7l\u0131)\nsudo iptables -L -n -v\n\n# INPUT zincirine kural eklemeden \u00f6nce, mevcut varsay\u0131lan politikay\u0131 g\u00f6zden ge\u00e7irin.\n# Genellikle INPUT ve FORWARD zincirleri i\u00e7in varsay\u0131lan DROP\/REJECT politikas\u0131 \u00f6nerilir.\n# \u00d6rnek: sudo iptables -P INPUT DROP\n\n# 1. Kendi a\u011f\u0131m\u0131zdan (192.168.1.0\/24) web sunucumuza HTTP eri\u015fimine izin ver\nsudo iptables -A INPUT -p tcp --dport 80 -s 192.168.1.0\/24 -d 192.168.10.50 -j ACCEPT\n\n# 2. Kendi a\u011f\u0131m\u0131zdan (192.168.1.0\/24) web sunucumuza HTTPS eri\u015fimine izin ver\nsudo iptables -A INPUT -p tcp --dport 443 -s 192.168.1.0\/24 -d 192.168.10.50 -j ACCEPT\n\n# 3. Gerekirse SSH eri\u015fimi (sadece belirli bir y\u00f6netim IP'sinden)\n# sudo iptables -A INPUT -p tcp --dport 22 -s 192.168.1.10 -d 192.168.10.50 -j ACCEPT\n\n# 4. Sunucunun d\u0131\u015far\u0131ya DNS sorgusu yapmas\u0131na izin ver (\u00f6rne\u011fin g\u00fcncellemeler i\u00e7in)\n# sudo iptables -A OUTPUT -p udp --dport 53 -d 8.8.8.8 -j ACCEPT\n# sudo iptables -A INPUT -p udp --sport 53 -s 8.8.8.8 -j ACCEPT\n\n# \u0130ptables kurallar\u0131n\u0131 kaydet (da\u011f\u0131t\u0131ma g\u00f6re farkl\u0131l\u0131k g\u00f6sterebilir)\n# Debian\/Ubuntu: sudo netfilter-persistent save\n# CentOS\/RHEL: sudo service iptables save (eski versiyonlar i\u00e7in)\n#              sudo firewall-cmd --runtime-to-permanent (firewalld kullan\u0131l\u0131yorsa)\n        <\/code><\/pre>\n<p>Bu \u00f6rnekte g\u00f6rd\u00fc\u011f\u00fcn\u00fcz gibi, <strong>en dar kapsaml\u0131<\/strong> izinleri verdik. Yani sadece ilgili a\u011fdan, ilgili porta ve ilgili sunucuya eri\u015fime izin verdik. Bu, <strong>least privilege (en az ayr\u0131cal\u0131k)<\/strong> prensibinin temelidir.<\/p>\n<h2>Kar\u015f\u0131la\u015f\u0131lan Zorluklar ve Dikkat Edilmesi Gerekenler<\/h2>\n<p>Tecr\u00fcbelerime g\u00f6re firewall kurallar\u0131n\u0131 yazarken veya y\u00f6netirken en \u00e7ok kar\u015f\u0131la\u015f\u0131lan sorunlar ve benim de d\u00fc\u015ft\u00fc\u011f\u00fcm hatalar \u015funlar:<\/p>\n<ul>\n<li><strong>Kural S\u0131ralamas\u0131:<\/strong> Firewall&#8217;lar kurallar\u0131 yukar\u0131dan a\u015fa\u011f\u0131ya do\u011fru okur ve ilk e\u015fle\u015fen kural\u0131 uygular. Bu y\u00fczden <strong>spesifik kurallar genel kurallardan \u00f6nce gelmelidir<\/strong>. \u00d6rne\u011fin, t\u00fcm trafi\u011fi engelleyen bir kural (<code>DROP ALL<\/code>) en \u00fcste yaz\u0131l\u0131rsa, alt\u0131nda yazd\u0131\u011f\u0131n\u0131z hi\u00e7bir izin kural\u0131 \u00e7al\u0131\u015fmayacakt\u0131r. Ben bunu ilk ba\u015flarda g\u00f6zden ka\u00e7\u0131r\u0131p saatlerce neden servisin \u00e7al\u0131\u015fmad\u0131\u011f\u0131n\u0131 anlamaya \u00e7al\u0131\u015fm\u0131\u015ft\u0131m.<\/li>\n<li><strong>Default Deny Politikas\u0131:<\/strong> Genellikle firewall&#8217;\u0131n sonunda t\u00fcm trafi\u011fi reddeden (<code>DROP<\/code> veya <code>REJECT<\/code>) bir kural olmas\u0131, yani &#8220;varsay\u0131lan olarak her \u015feyi engelle, izin verdiklerini ise a\u00e7\u0131k\u00e7a belirt&#8221; ilkesi esast\u0131r. Bu, bilmedi\u011finiz veya kontrol etmedi\u011finiz hi\u00e7bir trafi\u011fin ge\u00e7i\u015fine izin vermemenizi sa\u011flar.<\/li>\n<li><strong>Geni\u015f Kapsaml\u0131 Kurallar:<\/strong> <code>ANY ANY PERMIT<\/code> gibi kurallardan ka\u00e7\u0131n\u0131n. \u00d6zellikle kaynak veya hedef IP&#8217;yi <code>any<\/code>, portu <code>any<\/code> olarak b\u0131rakmak, g\u00fcvenli\u011finizi ciddi \u015fekilde tehlikeye atar. &#8220;Kullan\u0131c\u0131lar eri\u015femiyor, bari \u015fimdilik her yeri a\u00e7ay\u0131m&#8221; demenin bedeli genelde a\u011f\u0131r olur.<\/li>\n<li><strong>Loglama ve \u0130zleme:<\/strong> G\u00fcvenlik olaylar\u0131n\u0131 tespit etmek ve kurallar\u0131n\u0131z\u0131n etkinli\u011fini anlamak i\u00e7in <strong>firewall loglar\u0131n\u0131 d\u00fczenli olarak izlemek<\/strong> hayati \u00f6neme sahiptir. Hatal\u0131 engellemeleri veya \u015f\u00fcpheli denemeleri bu sayede fark edebilirsiniz.<\/li>\n<li><strong>Geri D\u00f6n\u00fc\u015f Trafi\u011fi (Stateful Inspection):<\/strong> Modern firewall&#8217;lar genellikle &#8220;stateful&#8221; \u00e7al\u0131\u015f\u0131r; yani giden bir ba\u011flant\u0131ya gelen yan\u0131t trafi\u011fine otomatik olarak izin verirler. Ancak stateless bir firewall ile \u00e7al\u0131\u015f\u0131yorsan\u0131z veya karma\u015f\u0131k bir senaryoda, giden ba\u011flant\u0131n\u0131n geri d\u00f6n\u00fc\u015f trafi\u011fi i\u00e7in de kural yazman\u0131z gerekebilir.<\/li>\n<li><strong>Ba\u011f\u0131ml\u0131l\u0131klar:<\/strong> Bir servis sadece web portu \u00fczerinden de\u011fil, DNS, NTP, LDAP gibi farkl\u0131 servisler \u00fczerinden de ba\u011f\u0131ml\u0131l\u0131klar\u0131 olabilir. Bu ba\u011f\u0131ml\u0131l\u0131klar\u0131 g\u00f6zden ka\u00e7\u0131r\u0131p sadece ana servisin portunu a\u00e7mak, uygulaman\u0131n d\u00fczg\u00fcn \u00e7al\u0131\u015fmamas\u0131na neden olabilir.<\/li>\n<li><strong>Belgeleme (Documentation):<\/strong> Her kural\u0131n ne ama\u00e7la yaz\u0131ld\u0131\u011f\u0131n\u0131 ve hangi uygulamaya hizmet etti\u011fini belgelemeniz, gelecekteki de\u011fi\u015fikliklerde veya problem \u00e7\u00f6zmede size ve ekibinize b\u00fcy\u00fck kolayl\u0131k sa\u011flayacakt\u0131r. \u0130nan\u0131n bana, ayl\u0131k periyodik firewall kural denetimlerinde bu belgeler alt\u0131n de\u011ferinde oluyor.<\/li>\n<\/ul>\n<h2>Sonu\u00e7<\/h2>\n<p>Firewall kurallar\u0131, sadece bir kerelik ayarlay\u0131p unutabilece\u011fimiz \u015feyler de\u011fil, s\u00fcrekli g\u00f6zden ge\u00e7irilmesi, optimize edilmesi ve de\u011fi\u015fen ihtiya\u00e7lara g\u00f6re g\u00fcncellenmesi gereken dinamik yap\u0131lard\u0131r. Kariyerimin bu erken d\u00f6neminde edindi\u011fim tecr\u00fcbelere dayanarak s\u00f6yleyebilirim ki, bu konuya ne kadar \u00f6zen g\u00f6sterirsek, a\u011f\u0131m\u0131z\u0131n g\u00fcvenli\u011fi de o kadar sa\u011flam olacakt\u0131r. Unutmay\u0131n, en zay\u0131f halka genellikle insan hatas\u0131d\u0131r ve biz IT&#8217;ciler olarak bu hatalar\u0131 en aza indirmekle y\u00fck\u00fcml\u00fcy\u00fcz. \u00d6\u011frenmeye ve denemeye devam! G\u00fcvenli g\u00fcnler dilerim.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Firewall Kurallar\u0131nda Dikkat Edilmesi Gerekenler: G\u00fcvenli\u011fin Kalbi<\/p>\n","protected":false},"author":1,"featured_media":66,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[11,12,6,13],"class_list":["post-25","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sistem-donanim","tag-firewall","tag-guvenlik-duvari","tag-ipucu","tag-yonetim"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar** - Ali Burak \u015ean<\/title>\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.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar** - Ali Burak \u015ean\" \/>\n<meta property=\"og:description\" content=\"Firewall Kurallar\u0131nda Dikkat Edilmesi Gerekenler: G\u00fcvenli\u011fin Kalbi\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/\" \/>\n<meta property=\"og:site_name\" content=\"Ali Burak \u015ean\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-20T07:56:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-22T00:56:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.aliburaksan.com\/blog\/wp-content\/uploads\/2025\/11\/firewall-konu-basligi-scaled-e1763707202723.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"764\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"abs_administrator45_\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"abs_administrator45_\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/\"},\"author\":{\"name\":\"abs_administrator45_\",\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/ddc80da203b66794d3a1b568035ff3c2\"},\"headline\":\"G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar**\",\"datePublished\":\"2025-11-20T07:56:19+00:00\",\"dateModified\":\"2025-11-22T00:56:43+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/\"},\"wordCount\":1029,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/ddc80da203b66794d3a1b568035ff3c2\"},\"image\":{\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.aliburaksan.com\/blog\/wp-content\/uploads\/2025\/11\/firewall-konu-basligi-scaled-e1763707202723.png\",\"keywords\":[\"firewall\",\"g\u00fcvenlik duvar\u0131\",\"ipucu\",\"y\u00f6netim\"],\"articleSection\":[\"Sistem &amp; Donan\u0131m\"],\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/\",\"url\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/\",\"name\":\"G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar** - Ali Burak \u015ean\",\"isPartOf\":{\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.aliburaksan.com\/blog\/wp-content\/uploads\/2025\/11\/firewall-konu-basligi-scaled-e1763707202723.png\",\"datePublished\":\"2025-11-20T07:56:19+00:00\",\"dateModified\":\"2025-11-22T00:56:43+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#breadcrumb\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"tr\",\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#primaryimage\",\"url\":\"https:\/\/www.aliburaksan.com\/blog\/wp-content\/uploads\/2025\/11\/firewall-konu-basligi-scaled-e1763707202723.png\",\"contentUrl\":\"https:\/\/www.aliburaksan.com\/blog\/wp-content\/uploads\/2025\/11\/firewall-konu-basligi-scaled-e1763707202723.png\",\"width\":1200,\"height\":764},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Anasayfa\",\"item\":\"https:\/\/www.aliburaksan.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar**\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/#website\",\"url\":\"https:\/\/www.aliburaksan.com\/blog\/\",\"name\":\"Dijital Nab\u0131z \u2013 IT Haberleri\",\"description\":\"IT, Sistem Y\u00f6netimi ve Teknoloji G\u00fcnl\u00fc\u011f\u00fc\",\"publisher\":{\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/ddc80da203b66794d3a1b568035ff3c2\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.aliburaksan.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"tr\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/ddc80da203b66794d3a1b568035ff3c2\",\"name\":\"abs_administrator45_\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"tr\",\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/0f7cbec178a59b3ec0e9b0732417e32803d988a369cc745ef68a7143376120ab?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/0f7cbec178a59b3ec0e9b0732417e32803d988a369cc745ef68a7143376120ab?s=96&d=mm&r=g\",\"caption\":\"abs_administrator45_\"},\"logo\":{\"@id\":\"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/image\/\"},\"sameAs\":[\"http:\/\/www.aliburaksan.com\/blog\"],\"url\":\"https:\/\/www.aliburaksan.com\/blog\/author\/abs_administrator45_\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar** - Ali Burak \u015ean","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/","og_locale":"tr_TR","og_type":"article","og_title":"G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar** - Ali Burak \u015ean","og_description":"Firewall Kurallar\u0131nda Dikkat Edilmesi Gerekenler: G\u00fcvenli\u011fin Kalbi","og_url":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/","og_site_name":"Ali Burak \u015ean","article_published_time":"2025-11-20T07:56:19+00:00","article_modified_time":"2025-11-22T00:56:43+00:00","og_image":[{"width":1200,"height":764,"url":"https:\/\/www.aliburaksan.com\/blog\/wp-content\/uploads\/2025\/11\/firewall-konu-basligi-scaled-e1763707202723.png","type":"image\/png"}],"author":"abs_administrator45_","twitter_card":"summary_large_image","twitter_misc":{"Yazan:":"abs_administrator45_","Tahmini okuma s\u00fcresi":"5 dakika"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#article","isPartOf":{"@id":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/"},"author":{"name":"abs_administrator45_","@id":"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/ddc80da203b66794d3a1b568035ff3c2"},"headline":"G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar**","datePublished":"2025-11-20T07:56:19+00:00","dateModified":"2025-11-22T00:56:43+00:00","mainEntityOfPage":{"@id":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/"},"wordCount":1029,"commentCount":0,"publisher":{"@id":"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/ddc80da203b66794d3a1b568035ff3c2"},"image":{"@id":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#primaryimage"},"thumbnailUrl":"https:\/\/www.aliburaksan.com\/blog\/wp-content\/uploads\/2025\/11\/firewall-konu-basligi-scaled-e1763707202723.png","keywords":["firewall","g\u00fcvenlik duvar\u0131","ipucu","y\u00f6netim"],"articleSection":["Sistem &amp; Donan\u0131m"],"inLanguage":"tr","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/","url":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/","name":"G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar** - Ali Burak \u015ean","isPartOf":{"@id":"https:\/\/www.aliburaksan.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#primaryimage"},"image":{"@id":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#primaryimage"},"thumbnailUrl":"https:\/\/www.aliburaksan.com\/blog\/wp-content\/uploads\/2025\/11\/firewall-konu-basligi-scaled-e1763707202723.png","datePublished":"2025-11-20T07:56:19+00:00","dateModified":"2025-11-22T00:56:43+00:00","breadcrumb":{"@id":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#breadcrumb"},"inLanguage":"tr","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/"]}]},{"@type":"ImageObject","inLanguage":"tr","@id":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#primaryimage","url":"https:\/\/www.aliburaksan.com\/blog\/wp-content\/uploads\/2025\/11\/firewall-konu-basligi-scaled-e1763707202723.png","contentUrl":"https:\/\/www.aliburaksan.com\/blog\/wp-content\/uploads\/2025\/11\/firewall-konu-basligi-scaled-e1763707202723.png","width":1200,"height":764},{"@type":"BreadcrumbList","@id":"https:\/\/www.aliburaksan.com\/blog\/guvenlik-duvari-yonetimi-kritik-noktalar\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Anasayfa","item":"https:\/\/www.aliburaksan.com\/blog\/"},{"@type":"ListItem","position":2,"name":"G\u00fcvenlik Duvar\u0131 Y\u00f6netimi: Kritik Noktalar**"}]},{"@type":"WebSite","@id":"https:\/\/www.aliburaksan.com\/blog\/#website","url":"https:\/\/www.aliburaksan.com\/blog\/","name":"Dijital Nab\u0131z \u2013 IT Haberleri","description":"IT, Sistem Y\u00f6netimi ve Teknoloji G\u00fcnl\u00fc\u011f\u00fc","publisher":{"@id":"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/ddc80da203b66794d3a1b568035ff3c2"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.aliburaksan.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"tr"},{"@type":["Person","Organization"],"@id":"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/ddc80da203b66794d3a1b568035ff3c2","name":"abs_administrator45_","image":{"@type":"ImageObject","inLanguage":"tr","@id":"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/0f7cbec178a59b3ec0e9b0732417e32803d988a369cc745ef68a7143376120ab?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/0f7cbec178a59b3ec0e9b0732417e32803d988a369cc745ef68a7143376120ab?s=96&d=mm&r=g","caption":"abs_administrator45_"},"logo":{"@id":"https:\/\/www.aliburaksan.com\/blog\/#\/schema\/person\/image\/"},"sameAs":["http:\/\/www.aliburaksan.com\/blog"],"url":"https:\/\/www.aliburaksan.com\/blog\/author\/abs_administrator45_\/"}]}},"_links":{"self":[{"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/posts\/25","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/comments?post=25"}],"version-history":[{"count":3,"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/posts\/25\/revisions"}],"predecessor-version":[{"id":231,"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/posts\/25\/revisions\/231"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/media\/66"}],"wp:attachment":[{"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/media?parent=25"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/categories?post=25"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aliburaksan.com\/blog\/wp-json\/wp\/v2\/tags?post=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}