{"id":30065,"date":"2025-09-23T03:40:23","date_gmt":"2025-09-23T00:40:23","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/"},"modified":"2025-09-23T03:40:23","modified_gmt":"2025-09-23T00:40:23","slug":"centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/","title":{"rendered":"CentOS 7’de FirewallD Kullanarak G\u00fcvenlik Duvar\u0131 Nas\u0131l Kurulur"},"content":{"rendered":"

# CentOS 7’de FirewallD ile G\u00fcvenlik Duvar\u0131 Kurulumu: Ad\u0131m Ad\u0131m K\u0131lavuz<\/p>\n

Meta A\u00e7\u0131klamas\u0131:<\/strong> CentOS 7 sunucunuzu g\u00fcvence alt\u0131na almak i\u00e7in FirewallD’yi nas\u0131l kuraca\u011f\u0131n\u0131z\u0131 ve yap\u0131land\u0131raca\u011f\u0131n\u0131z\u0131 \u00f6\u011frenin. Bu kapsaml\u0131 k\u0131lavuzda, yeni ba\u015flayanlar i\u00e7in ad\u0131m ad\u0131m talimatlardan ileri d\u00fczey tekniklere kadar her \u015fey bulunmaktad\u0131r. G\u00fcvenli\u011finizi art\u0131r\u0131n ve sunucunuzu tehditlerden koruyun!<\/p>\n

Sunucunuzun g\u00fcvenli\u011fi, dijital d\u00fcnyan\u0131n en \u00f6nemli unsurlar\u0131ndan biridir. Yanl\u0131\u015f yap\u0131land\u0131r\u0131lm\u0131\u015f bir sistem, verilerinizin, uygulamalar\u0131n\u0131z\u0131n ve hatta t\u00fcm i\u015fletmenizin risk alt\u0131nda kalmas\u0131na neden olabilir. Bu nedenle, g\u00fc\u00e7l\u00fc bir g\u00fcvenlik duvar\u0131 kurmak, her sunucu y\u00f6neticisinin \u00f6ncelikli g\u00f6revidir. Bu makalede, CentOS 7 i\u015fletim sisteminde bulunan g\u00fc\u00e7l\u00fc ve esnek bir g\u00fcvenlik duvar\u0131 olan FirewallD’nin kurulumunu ve yap\u0131land\u0131rmas\u0131n\u0131 ad\u0131m ad\u0131m ele alaca\u011f\u0131z. Farkl\u0131 seviyelerdeki kullan\u0131c\u0131lar i\u00e7in haz\u0131rlanan bu k\u0131lavuz, g\u00fcvenlik duvar\u0131 y\u00f6netiminde uzmanla\u015fman\u0131za yard\u0131mc\u0131 olacakt\u0131r.<\/p>\n

1. FirewallD Temel Kavramlar\u0131 Anlamak<\/strong><\/p>\n

FirewallD, CentOS 7 ve di\u011fer bir\u00e7ok Linux da\u011f\u0131t\u0131m\u0131nda varsay\u0131lan g\u00fcvenlik duvar\u0131 arac\u0131d\u0131r. Dinamik ve kullan\u0131c\u0131 dostu bir aray\u00fcze sahip olan FirewallD, iptables’\u0131n \u00fcst\u00fcnde \u00e7al\u0131\u015fan bir y\u00f6netim arac\u0131d\u0131r. iptables, d\u00fc\u015f\u00fck seviyeli bir paket filtreleme arac\u0131 iken, FirewallD bu arac\u0131 daha kullan\u0131\u015fl\u0131 ve y\u00f6netilebilir hale getirir. FirewallD, “b\u00f6lgeler” (zones) kavram\u0131 \u00fczerine kuruludur. Her b\u00f6lge, belirli bir g\u00fcvenlik seviyesi tan\u0131mlar (\u00f6rne\u011fin, “public”, “internal”, “dmz”). Her b\u00f6lgeye, belirli a\u011f trafi\u011fine izin veren veya engelleyen kurallar ekleyebilirsiniz. Bu, g\u00fcvenlik duvar\u0131n\u0131z\u0131 daha d\u00fczenli ve anla\u015f\u0131l\u0131r bir \u015fekilde y\u00f6netmenizi sa\u011flar. FirewallD’nin en \u00f6nemli avantajlar\u0131ndan biri de, sistemin \u00e7al\u0131\u015f\u0131rken bile kurallar\u0131n dinamik olarak de\u011fi\u015ftirilebilmesidir. Bu, sisteminizi yeniden ba\u015flatmadan g\u00fcvenlik ayarlar\u0131n\u0131z\u0131 g\u00fcncellemenize olanak tan\u0131r.<\/p>\n

2. FirewallD’nin Kurulumu ve Ba\u015flat\u0131lmas\u0131 (Yeni Ba\u015flayanlar \u0130\u00e7in)<\/strong><\/p>\n

FirewallD, CentOS 7’de varsay\u0131lan olarak kurulu gelir. E\u011fer kurulu de\u011filse, a\u015fa\u011f\u0131daki komutu kullanarak kurabilirsiniz:<\/p>\n

sudo yum install firewalld<\/code><\/pre>\n
FirewallD’yi ba\u015flatmak ve sistem ba\u015flang\u0131c\u0131nda otomatik olarak \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flamak i\u00e7in \u015fu komutlar\u0131 kullan\u0131n:<\/p>\n
sudo systemctl start firewalld\nsudo systemctl enable firewalld<\/code><\/pre>\n
FirewallD’nin durumunu kontrol etmek i\u00e7in:<\/p>\n
sudo systemctl status firewalld<\/code><\/pre>\n
Bu komut, FirewallD’nin \u00e7al\u0131\u015f\u0131p \u00e7al\u0131\u015fmad\u0131\u011f\u0131n\u0131 ve aktif b\u00f6lgeleri g\u00f6sterecektir.<\/p>\n
3.  FirewallD’de Temel Kurallar Olu\u015fturma: HTTP ve SSH Eri\u015fimi (Yeni Ba\u015flayanlar \u0130\u00e7in)<\/strong><\/p>\n
Yeni bir sunucu kurulumunda, genellikle sadece HTTP (web sunucusu) ve SSH (uzaktan y\u00f6netim) eri\u015fimine izin vermek istersiniz.  Bu, g\u00fcvenlik riskini en aza indirir.  A\u015fa\u011f\u0131daki komutlar, FirewallD’ye HTTP ve SSH trafi\u011fine izin vermesini s\u00f6yler:<\/p>\n
sudo firewall-cmd --permanent --add-service=http\nsudo firewall-cmd --permanent --add-service=ssh\nsudo firewall-cmd --reload<\/code><\/pre>\n
--permanent<\/code> se\u00e7ene\u011fi, de\u011fi\u015fiklikleri kal\u0131c\u0131 hale getirir.  --reload<\/code> se\u00e7ene\u011fi ise, FirewallD’yi yeniden y\u00fckleyerek yeni kurallar\u0131 etkinle\u015ftirir.  E\u011fer sadece ge\u00e7ici bir de\u011fi\u015fiklik yapmak istiyorsan\u0131z --permanent<\/code> se\u00e7ene\u011fini kullanmay\u0131n.<\/p>\n
\u00d6rnek Vaka Analizi:<\/strong> Yeni bir e-ticaret sitesi kurdu\u011funuzu ve sadece 80 (HTTP) ve 443 (HTTPS) portlar\u0131na eri\u015fime izin vermek istedi\u011finizi varsayal\u0131m.  Bu durumda, yukar\u0131daki komutlar\u0131 kullanarak HTTP ve HTTPS hizmetlerini ekleyebilirsiniz.  Daha sonra, g\u00fcvenlik duvar\u0131 kurallar\u0131n\u0131 d\u00fczenli olarak g\u00f6zden ge\u00e7irmek ve gereksiz portlar\u0131 kapatmak \u00f6nemlidir.<\/p>\n
4.  Port A\u00e7ma ve Kapatma: Daha Geli\u015fmi\u015f Kontrol (Orta Seviye)<\/strong><\/p>\n
FirewallD, belirli portlar\u0131 a\u00e7mak ve kapatmak i\u00e7in esnek se\u00e7enekler sunar.  \u00d6rne\u011fin, 8080 portunu a\u00e7mak i\u00e7in:<\/p>\n
sudo firewall-cmd --permanent --add-port=8080\/tcp\nsudo firewall-cmd --reload<\/code><\/pre>\n
Bu komut, 8080 TCP portunu a\u00e7ar.  UDP portunu a\u00e7mak i\u00e7in \/udp<\/code> belirtmeniz gerekir.  Bir portu kapatmak i\u00e7in --remove-port<\/code> se\u00e7ene\u011fini kullan\u0131n.<\/p>\n
Optimizasyon \u0130pu\u00e7lar\u0131:<\/strong> Gereksiz portlar\u0131 a\u00e7\u0131k tutmaktan ka\u00e7\u0131n\u0131n.  Sadece gerekli hizmetler i\u00e7in portlar a\u00e7\u0131n ve d\u00fczenli olarak g\u00fcvenlik duvar\u0131 kurallar\u0131n\u0131z\u0131 g\u00f6zden ge\u00e7irin.  Ayr\u0131ca, uygulamalar\u0131n\u0131z i\u00e7in varsay\u0131lan portlar yerine daha az kullan\u0131lan portlar\u0131 tercih edebilirsiniz.<\/p>\n
5.  \u00d6zel Kurallar Olu\u015fturma ve B\u00f6lge Y\u00f6netimi (Orta Seviye)<\/strong><\/p>\n
FirewallD, belirli IP adresleri veya a\u011flara \u00f6zel kurallar olu\u015fturman\u0131za olanak tan\u0131r.  \u00d6rne\u011fin, belirli bir IP adresinden gelen ba\u011flant\u0131lara izin vermek i\u00e7in:<\/p>\n
sudo firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="192.168.1.100" accept'\nsudo firewall-cmd --reload<\/code><\/pre>\n
Bu komut, 192.168.1.100 IP adresinden gelen t\u00fcm ba\u011flant\u0131lara izin verir.  Daha karma\u015f\u0131k kurallar olu\u015fturmak i\u00e7in firewall-cmd --get-active-zones<\/code> komutuyla aktif b\u00f6lgeleri inceleyip  rich rule<\/code> yap\u0131s\u0131n\u0131 kullanabilirsiniz.  Bu, belirli uygulamalar i\u00e7in \u00f6zel g\u00fcvenlik profilleri olu\u015fturman\u0131za olanak tan\u0131r.<\/p>\n
6.  FirewallD ile G\u00fcvenlik Duvar\u0131 Kurallar\u0131n\u0131n Yedeklemesi ve Geri Y\u00fcklemesi (\u0130leri D\u00fczey)<\/strong><\/p>\n
FirewallD kurallar\u0131n\u0131z\u0131 d\u00fczenli olarak yedeklemek \u00f6nemlidir.  Bu, yanl\u0131\u015fl\u0131kla yap\u0131lan de\u011fi\u015fikliklerden sonra kurallar\u0131 geri y\u00fcklemenize olanak tan\u0131r.  Kurallar\u0131 XML format\u0131nda yedeklemek i\u00e7in:<\/p>\n
sudo firewall-cmd --get-active-zones > firewalld_backup.xml<\/code><\/pre>\n
Yedeklemeyi geri y\u00fcklemek i\u00e7in:<\/p>\n
sudo firewall-cmd --reload > \/dev\/null 2>&1\nsudo firewall-cmd --set-default-zone=public\nsudo firewall-cmd --import=firewalld_backup.xml<\/code><\/pre>\n
\u00d6nemli Not:<\/strong>  --import<\/code> komutu, yedekleme dosyas\u0131ndaki t\u00fcm kurallar\u0131 de\u011fi\u015ftirece\u011finden dikkatli kullan\u0131lmal\u0131d\u0131r.<\/p>\n
7.  FirewallD Performans Analizi ve Optimizasyonu (\u0130leri D\u00fczey)<\/strong><\/p>\n
FirewallD’nin performans\u0131n\u0131 etkileyen fakt\u00f6rler aras\u0131nda kurallar\u0131n say\u0131s\u0131 ve karma\u015f\u0131kl\u0131\u011f\u0131 yer al\u0131r.  \u00c7ok say\u0131da karma\u015f\u0131k kural, paket i\u015fleme s\u00fcresini art\u0131rabilir.  Performans\u0131 optimize etmek i\u00e7in, gereksiz kurallar\u0131 kald\u0131r\u0131n, kurallar\u0131 basitle\u015ftirin ve belirli hizmetler i\u00e7in \u00f6zel b\u00f6lgeler kullan\u0131n.  Ayr\u0131ca, iptables -L -n -v<\/code> komutu ile iptables kurallar\u0131n\u0131n detayl\u0131 istatistiklerini inceleyerek darbo\u011fazlar\u0131 tespit edebilirsiniz.  Bu istatistikler, hangi kurallar\u0131n en fazla kaynak t\u00fcketti\u011fini g\u00f6sterir.<\/p>\n
8.  Edge Case’ler ve Hata Ay\u0131klama (\u0130leri D\u00fczey)<\/strong><\/p>\n
Baz\u0131 durumlarda, FirewallD beklenmedik davran\u0131\u015flar sergileyebilir.  Bu durumlar genellikle yanl\u0131\u015f yap\u0131land\u0131r\u0131lm\u0131\u015f kurallar veya \u00e7at\u0131\u015fmalar nedeniyle ortaya \u00e7\u0131kar.  Hata ay\u0131klama i\u00e7in, journalctl -xe<\/code> komutu ile sistem g\u00fcnl\u00fc\u011f\u00fcn\u00fc inceleyin.  Ayr\u0131ca, firewall-cmd --list-all<\/code> komutu ile t\u00fcm aktif kurallar\u0131 listeleyerek sorunun kayna\u011f\u0131n\u0131 belirleyebilirsiniz.  firewall-cmd --state<\/code> komutu ile FirewallD servisinin durumunu kontrol edebilirsiniz.<\/p>\n
9.  Ger\u00e7ek D\u00fcnya Senaryolar\u0131 ve Vaka \u00c7al\u0131\u015fmalar\u0131<\/strong><\/p>\n
Senaryo 1:<\/strong> Bir web sunucusu ve bir veritaban\u0131 sunucusu i\u00e7eren bir sunucu ortam\u0131n\u0131z var.  Web sunucusu 80 ve 443 portlar\u0131n\u0131, veritaban\u0131 sunucusu ise 3306 portunu kullan\u0131yor.  Bu durumda, her iki hizmet i\u00e7in de ayr\u0131 kurallar olu\u015fturman\u0131z ve sadece gerekli portlar\u0131 a\u00e7man\u0131z gerekir.<\/p>\n
Senaryo 2:<\/strong>  Sunucunuza sadece belirli bir IP aral\u0131\u011f\u0131ndan eri\u015fime izin vermek istiyorsunuz.  Bu durumda, add-rich-rule<\/code> komutunu kullanarak IP aral\u0131\u011f\u0131n\u0131 belirtebilirsiniz.<\/p>\n
Senaryo 3:<\/strong>  Bir VPN sunucusu kurdunuz ve VPN trafi\u011fine izin vermeniz gerekiyor.  Bu durumda, VPN sunucusunun kulland\u0131\u011f\u0131 portlar\u0131 a\u00e7man\u0131z ve ilgili kurallar\u0131 olu\u015fturman\u0131z gerekecektir.  Bu konuda daha detayl\u0131 bilgi i\u00e7in [Fatih Soysal’\u0131n VPN kurulumu ile ilgili yaz\u0131lar\u0131n\u0131](https:\/\/fatihsoysal.com) inceleyebilirsiniz. (Buraya Fatih Soysal’\u0131n VPN ile ilgili bir makalesine link eklenecek)<\/p>\n
Sonu\u00e7<\/strong><\/p>\n
Bu makalede, CentOS 7’de FirewallD’nin kurulumu ve yap\u0131land\u0131rmas\u0131 hakk\u0131nda kapsaml\u0131 bir bilgi vermeye \u00e7al\u0131\u015ft\u0131k.  Farkl\u0131 seviyelerdeki kullan\u0131c\u0131lar i\u00e7in haz\u0131rlanan bu k\u0131lavuz, g\u00fcvenlik duvar\u0131 y\u00f6netiminde uzmanla\u015fman\u0131za yard\u0131mc\u0131 olacakt\u0131r.  Unutmay\u0131n ki, g\u00fcvenlik duvar\u0131 kurallar\u0131n\u0131z\u0131 d\u00fczenli olarak g\u00f6zden ge\u00e7irmek ve g\u00fcncellemek, sisteminizin g\u00fcvenli\u011fini sa\u011flamak i\u00e7in hayati \u00f6nem ta\u015f\u0131r.<\/p>\n
S\u0131k\u00e7a Sorulan Sorular:<\/strong><\/p>\n
1. FirewallD’yi devre d\u0131\u015f\u0131 b\u0131rakabilir miyim?<\/strong>  Evet, ancak bunu yapmadan \u00f6nce dikkatli d\u00fc\u015f\u00fcnmelisiniz.  G\u00fcvenlik duvar\u0131 devre d\u0131\u015f\u0131 b\u0131rak\u0131ld\u0131\u011f\u0131nda sunucunuz daha savunmas\u0131z hale gelir.<\/p>\n
2. FirewallD kurallar\u0131n\u0131 nas\u0131l silebilirim?<\/strong>  firewall-cmd --permanent --remove-service=http<\/code> gibi komutlar ile belirli kurallar\u0131 silebilirsiniz.  T\u00fcm kurallar\u0131 silmek i\u00e7in dikkatli olmal\u0131 ve yedekleme almal\u0131s\u0131n\u0131z.<\/p>\n
3. FirewallD’nin g\u00fcnl\u00fcklerini nas\u0131l kontrol edebilirim?<\/strong> journalctl -xe<\/code> komutu ile sistem g\u00fcnl\u00fc\u011f\u00fcn\u00fc inceleyebilirsiniz.<\/p>\n
4. FirewallD’yi nas\u0131l yeniden ba\u015flatabilirim?<\/strong> sudo systemctl restart firewalld<\/code> komutunu kullanabilirsiniz.<\/p>\n
5. FirewallD’nin hangi versiyonunu kullan\u0131yorum?<\/strong> firewall-cmd --version<\/code> komutuyla FirewallD s\u00fcr\u00fcm\u00fcn\u00fc \u00f6\u011frenebilirsiniz.<\/p>\n
Yazar: Fatih Soysal<\/p>\n","protected":false},"excerpt":{"rendered":"# CentOS 7’de FirewallD ile G\u00fcvenlik Duvar\u0131 Kurulumu: Ad\u0131m Ad\u0131m K\u0131lavuz Meta A\u00e7\u0131klamas\u0131: CentOS 7 sunucunuzu g\u00fcvence alt\u0131na…","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":[241],"tags":[],"class_list":{"0":"post-30065","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-linux","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\nCentOS 7'de FirewallD Kullanarak G\u00fcvenlik Duvar\u0131 Nas\u0131l Kurulur<\/title>\n<meta name=\"description\" content=\"Hi\u00e7bir etiketi bulunamad\u0131.\" \/>\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\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CentOS 7'de FirewallD Kullanarak G\u00fcvenlik Duvar\u0131 Nas\u0131l Kurulur\" \/>\n<meta property=\"og:description\" content=\"Hi\u00e7bir etiketi bulunamad\u0131.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-23T00:40:23+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=\"7 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"CentOS 7’de FirewallD Kullanarak G\u00fcvenlik Duvar\u0131 Nas\u0131l Kurulur\",\"datePublished\":\"2025-09-23T00:40:23+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/\"},\"wordCount\":1289,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"articleSection\":[\"Linux\"],\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/\",\"name\":\"CentOS 7'de FirewallD Kullanarak G\u00fcvenlik Duvar\u0131 Nas\u0131l Kurulur\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2025-09-23T00:40:23+00:00\",\"description\":\"Hi\u00e7bir etiketi bulunamad\u0131.\",\"breadcrumb\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/#breadcrumb\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/centos-7de-firewalld-kullanarak-guvenlik-duvari-nasil-kurulur\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Anasayfa\",\"item\":\"https:\/\/fatihsoysal.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"CentOS 7’de FirewallD Kullanarak G\u00fcvenlik Duvar\u0131 Nas\u0131l Kurulur\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/\",\"name\":\"Fatihsoysal.com\",\"description\":\"Blog - 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