{"id":120,"date":"2026-01-10T04:41:59","date_gmt":"2026-01-10T01:41:59","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T21:00:00","slug":"firewall-nedir","status":"publish","type":"post","link":"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/","title":{"rendered":"Firewall Nedir?"},"content":{"rendered":"<p>G\u00fcvenlik duvar\u0131 yani Firewall, bilgisayar\u0131n\u0131z\u0131 ve a\u011f\u0131n\u0131z\u0131 yetkisiz eri\u015fimden korumak i\u00e7in kullan\u0131lan bir a\u011f g\u00fcvenlik sistemidir. Bir kalenin surlar\u0131 gibi, <strong>g\u00fcvenlik duvar\u0131<\/strong> da dijital ortamda savunma hatt\u0131n\u0131z\u0131n ilk ve en \u00f6nemli bile\u015fenidir.<\/p>\n<p><strong>Firewall nedir?<\/strong> Sorusuna yan\u0131t olarak; G\u00fcvenlik duvar\u0131, gelen ve giden a\u011f trafi\u011fini izleyen ve \u00f6nceden tan\u0131mlanm\u0131\u015f kurallara g\u00f6re filtreleyen bir sistemdir.<\/p>\n<p>\u00d6zellikle bu kurallar hangi programlar\u0131n internete eri\u015febilece\u011fini, hangi ba\u011flant\u0131 noktalar\u0131n\u0131n a\u00e7\u0131k olaca\u011f\u0131n\u0131 ve hangi t\u00fcr verilerin aktar\u0131labilece\u011fini belirlemektedir. Firewall, izin verilen trafi\u011fin ge\u00e7i\u015fine izin verirken, izin verilmeyen trafi\u011fi engellemektedir.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0130\u00e7indekiler<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u0130\u00e7indekiler Tablosunu A\u00e7\/Kapat\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Firewall_Nedir_Ne_Ise_Yarar\" >Firewall Nedir Ne \u0130\u015fe Yarar?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Firewall_Turleri_Nelerdir\" >Firewall T\u00fcrleri Nelerdir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Firewall_Nasil_Calisir\" >Firewall Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Firewall_Olmazsa_Ne_Olur\" >Firewall Olmazsa Ne Olur?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Firewall_Kurali_Nedir\" >Firewall Kural\u0131 Nedir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Guvenlik_Duvari_Kurallari_Neden_Onemlidir\" >G\u00fcvenlik Duvar\u0131 Kurallar\u0131 Neden \u00d6nemlidir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Firewall_Nasil_Kurulur\" >Firewall Nas\u0131l Kurulur?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Firewall_Nasil_Kapatilir\" >Firewall Nas\u0131l Kapat\u0131l\u0131r?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Sikca_Sorulan_Sorular\" >S\u0131k\u00e7a Sorulan Sorular<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Guvenlik_duvari_turleri_nelerdir\" >G\u00fcvenlik duvar\u0131 t\u00fcrleri nelerdir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Guvenlik_duvari_olmadan_ne_olur\" >G\u00fcvenlik duvar\u0131 olmadan ne olur?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#En_iyi_guvenlik_duvari_hangisidir\" >En iyi g\u00fcvenlik duvar\u0131 hangisidir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Guvenlik_duvari_internetimi_yavaslatir_mi\" >G\u00fcvenlik duvar\u0131 internetimi yava\u015flat\u0131r m\u0131?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.hostingtry.com\/blog\/firewall-nedir\/#Guvenlik_duvari_antivirus_programi_yerine_gecer_mi\" >G\u00fcvenlik duvar\u0131 antivir\u00fcs program\u0131 yerine ge\u00e7er mi?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Firewall_Nedir_Ne_Ise_Yarar\"><\/span>Firewall Nedir Ne \u0130\u015fe Yarar?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Bilgisayar a\u011flar\u0131 g\u00fcn\u00fcm\u00fczde internet ba\u011flant\u0131s\u0131 arac\u0131l\u0131\u011f\u0131yla bilgi ve veri al\u0131\u015fveri\u015fi yapmak i\u00e7in yayg\u0131n olarak kullan\u0131lmaktad\u0131r. \u00d6zellikle bu durum, hackerlar ve di\u011fer siber sald\u0131rganlar i\u00e7in de cazip bir hedef olu\u015fturmaktad\u0131r.<\/p>\n<p>Bu nedenle a\u011f g\u00fcvenli\u011fini sa\u011flamak i\u00e7in \u00e7e\u015fitli \u00f6nlemler almak \u00f6nemlidir. G\u00fcvenlik duvar\u0131 (firewall) da bu \u00f6nlemlerin en \u00f6nemlilerinden biridir. G\u00fcvenlik duvar\u0131, bir bilgisayar a\u011f\u0131n\u0131 veya cihaz\u0131 yetkisiz eri\u015fimden korumak i\u00e7in kullan\u0131lan bir a\u011f g\u00fcvenlik sistemidir.<\/p>\n<p>Yaz\u0131l\u0131m veya donan\u0131m tabanl\u0131 olabilen g\u00fcvenlik duvarlar\u0131, gelen ve giden a\u011f trafi\u011fini izleyerek belirli kurallara g\u00f6re izin verir veya engeller. <strong>Firewall nedir ne i\u015fe yarar?<\/strong> Sorusuna yan\u0131t olarak; Firewall faydalar\u0131 aras\u0131nda \u015funlar yer almaktad\u0131r.<\/p>\n<ul>\n<li>Hackerlar\u0131n ve di\u011fer siber sald\u0131rganlar\u0131n a\u011f\u0131n\u0131za veya cihaz\u0131n\u0131za eri\u015fmesini engeller<\/li>\n<li>Vir\u00fcs ve casus yaz\u0131l\u0131mlar\u0131n a\u011f\u0131n\u0131za yay\u0131lmas\u0131n\u0131 engeller<\/li>\n<li>Ki\u015fisel bilgiler ve finansal bilgiler gibi hassas verileri korur<\/li>\n<li>A\u011f trafi\u011fini izleyerek ve kontrol ederek a\u011f bant geni\u015fli\u011fini optimize eder<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Firewall_Turleri_Nelerdir\"><\/span>Firewall T\u00fcrleri Nelerdir?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Bilgisayar a\u011flar\u0131n\u0131 ve sistemleri siber sald\u0131r\u0131lardan korumak i\u00e7in kullan\u0131lan en \u00f6nemli ara\u00e7lardan biri g\u00fcvenlik duvarlar\u0131d\u0131r (firewall). G\u00fcvenlik duvarlar\u0131, farkl\u0131 i\u015flevler ve \u00e7al\u0131\u015fma prensiplerine g\u00f6re \u00e7e\u015fitli t\u00fcrlere ayr\u0131lmaktad\u0131r.<\/p>\n<p><strong>Firewall t\u00fcrleri nelerdir?<\/strong> Sorusuna yan\u0131t olarak; En yayg\u0131n kullan\u0131lan <strong>firewall t\u00fcrleri<\/strong> \u015funlard\u0131r.<\/p>\n<ul>\n<li>En temel g\u00fcvenlik duvar\u0131 t\u00fcr\u00fc paket filtrelemedir. A\u011fdaki veri paketlerini IP adresi, protokol, ba\u011flant\u0131 noktas\u0131 gibi kriterlere g\u00f6re filtreleyerek \u00e7al\u0131\u015f\u0131r. Paketlerin i\u00e7eri\u011fini incelemezler ve sadece belirli kurallar\u0131n d\u0131\u015f\u0131ndaki paketleri engellerler.<\/li>\n<li>Paket filtreleme duvarlar\u0131n\u0131n bir \u00fcst versiyonu olan durum denetimi (stateful inspection) duvarlar\u0131, paketlerin i\u00e7eri\u011fini de inceleyerek daha geli\u015fmi\u015f bir koruma sa\u011flar. Aktif ba\u011flant\u0131lar\u0131 takip ederek her paketin o ba\u011flant\u0131ya ait olup olmad\u0131\u011f\u0131n\u0131 kontrol eder.<\/li>\n<li>Uygulama katman\u0131 (application layer) g\u00fcvenlik duvarlar\u0131, a\u011f trafi\u011fini uygulama baz\u0131nda kontrol eder. Her bir uygulaman\u0131n protokol\u00fcn\u00fc ve davran\u0131\u015flar\u0131n\u0131 anlayarak, yetkisiz eri\u015fimi ve istenmeyen veri ak\u0131\u015flar\u0131n\u0131 engeller.<\/li>\n<li>Yeni nesil g\u00fcvenlik duvarlar\u0131 (NGFW) ise yukar\u0131daki duvar t\u00fcrlerinin \u00f6zelliklerini bir araya getiren ve daha geli\u015fmi\u015f fonksiyonlar sunan duvarlard\u0131r. NGFW&#8217;ler, uygulama katman\u0131 denetimi, IPS ve VPN gibi ek \u00f6zellikler ile daha kapsaml\u0131 bir koruma sa\u011flar.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Firewall_Nasil_Calisir\"><\/span>Firewall Nas\u0131l \u00c7al\u0131\u015f\u0131r?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Firewall nas\u0131l \u00e7al\u0131\u015f\u0131r?<\/strong> Sorusuna yan\u0131t olarak; G\u00fcvenlik duvarlar\u0131, gelen ve giden t\u00fcm veri paketlerini filtreleyerek \u00e7al\u0131\u015f\u0131r. Filtreleme i\u015flemi, \u00f6nceden belirlenmi\u015f g\u00fcvenlik kurallar\u0131na g\u00f6re yap\u0131l\u0131r. Kurallar \u015funlar\u0131 i\u00e7erir.<\/p>\n<ul>\n<li>Hangi IP adreslerinin a\u011f\u0131n\u0131za eri\u015fmesine izin verilecek veya engellenecek<\/li>\n<li>Hangi portlar\u0131n (veri al\u0131\u015fveri\u015fi i\u00e7in kullan\u0131lan kanallar) a\u00e7\u0131k veya kapal\u0131 olacak<\/li>\n<li>Hangi t\u00fcr veri paketlerinin (TCP, UDP, ICMP vb.) izin verilecek veya engellenecek<\/li>\n<\/ul>\n<p>G\u00fcvenlik duvar\u0131 bir veri paketi ald\u0131\u011f\u0131nda, bu paketin kurallara uyup uymad\u0131\u011f\u0131n\u0131 kontrol eder. Pakete izin veriliyorsa paket a\u011f\u0131n\u0131za y\u00f6nlendirilir. Pakete izin verilmiyorsa paket engellenir ve g\u00f6nderene geri g\u00f6nderilir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Firewall_Olmazsa_Ne_Olur\"><\/span>Firewall Olmazsa Ne Olur?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>G\u00fcvenlik duvar\u0131, bilgisayar\u0131n\u0131z\u0131 ve a\u011f\u0131n\u0131z\u0131 yetkisiz eri\u015fimden ve siber sald\u0131r\u0131lardan korumak i\u00e7in kullan\u0131lan bir a\u011f g\u00fcvenlik sistemidir. Bir a\u011f ile internet aras\u0131nda bir bariyer g\u00f6revi g\u00f6rerek, gelen ve giden trafi\u011fi izler ve g\u00fcvenlik politikan\u0131za g\u00f6re izin verir veya reddeder.<\/p>\n<p>Peki, <strong>g\u00fcvenlik duvar\u0131 olmazsa ne olur? <\/strong>G\u00fcvenlik duvar\u0131 olmadan bilgisayar\u0131n\u0131z ve a\u011f\u0131n\u0131z \u015fu risklere kar\u015f\u0131 savunmas\u0131z hale gelir.<\/p>\n<ul>\n<li>Hackerlar, bilgisayar\u0131n\u0131za veya a\u011f\u0131n\u0131za s\u0131zmak i\u00e7in \u00e7e\u015fitli y\u00f6ntemler kullanabilirler. G\u00fcvenlik duvar\u0131 olmadan, bu sald\u0131r\u0131lara kar\u015f\u0131 korunmak \u00e7ok daha zor olur.<\/li>\n<li>Vir\u00fcsler ve casus yaz\u0131l\u0131mlar, bilgisayar\u0131n\u0131za zarar verebilir veya ki\u015fisel bilgilerinizi \u00e7alabilir. G\u00fcvenlik duvar\u0131, bu t\u00fcr zararl\u0131 yaz\u0131l\u0131mlar\u0131n bilgisayar\u0131n\u0131za girmesini engellemeye yard\u0131mc\u0131 olur.<\/li>\n<li>Yetkisiz kullan\u0131c\u0131lar, bilgisayar\u0131n\u0131za veya a\u011f\u0131n\u0131zdaki cihazlara eri\u015febilir ve verilerinizi \u00e7alabilir veya sistemlerinize zarar verebilir. G\u00fcvenlik duvar\u0131, a\u011f\u0131n\u0131za eri\u015fimi kontrol ederek bunu engellemeye yard\u0131mc\u0131 olur.<\/li>\n<li>G\u00fcvenlik duvar\u0131 olmadan, bilgisayar\u0131n\u0131zdaki veya a\u011f\u0131n\u0131zdaki veriler \u00e7al\u0131nabilir veya s\u0131zd\u0131r\u0131labilir. Bu durum, finansal kay\u0131plara veya itibar\u0131n\u0131z\u0131n zedelenmesine yol a\u00e7abilir.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Firewall_Kurali_Nedir\"><\/span>Firewall Kural\u0131 Nedir?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>G\u00fcvenlik duvar\u0131 kurallar\u0131, bir a\u011fdaki bilgisayarlar\u0131n ve cihazlar\u0131n hangi a\u011f trafi\u011fine izin verip vermeyece\u011fini belirleyen bir dizi talimatt\u0131r. <strong>Firewall kural\u0131 nedir?<\/strong> Sorusu i\u00e7in bu kurallar, yetkisiz eri\u015fimi engellemek, hassas verileri korumak ve a\u011f sald\u0131r\u0131lar\u0131n\u0131 \u00f6nlemek i\u00e7in kritik \u00f6neme sahiptir.<\/p>\n<p>G\u00fcvenlik duvar\u0131 kurallar\u0131n\u0131n temel \u00f6zellikleri \u015f\u00f6yledir.<\/p>\n<ul>\n<li>Protokol, TCP, UDP, ICMP gibi izin verilen protokol t\u00fcrlerini belirler.<\/li>\n<li>Y\u00f6n, gelen, giden veya her iki y\u00f6nl\u00fc trafi\u011fi de kapsayabilir.<\/li>\n<li>Kaynak, izin verilen IP adresleri, alt a\u011flar veya IP adres aral\u0131klar\u0131.<\/li>\n<li>Hedef, izin verilen IP adresleri, alt a\u011flar veya IP adres aral\u0131klar\u0131.<\/li>\n<li>Ba\u011flant\u0131 Noktas\u0131, elirli bir uygulama veya hizmetle ili\u015fkili TCP veya UDP ba\u011flant\u0131 noktalar\u0131n\u0131 belirler.<\/li>\n<li>Eylem, trafi\u011fin &#8220;izin verilmesi&#8221; veya &#8220;reddedilmesi&#8221;ni tan\u0131mlar.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Guvenlik_Duvari_Kurallari_Neden_Onemlidir\"><\/span>G\u00fcvenlik Duvar\u0131 Kurallar\u0131 Neden \u00d6nemlidir?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>G\u00fcvenlik duvar\u0131 kurallar\u0131, a\u011f g\u00fcvenli\u011finin temel bir bile\u015fenidir ve a\u015fa\u011f\u0131dakiler gibi bir\u00e7ok \u00f6nemli rol oynamaktad\u0131r.<\/p>\n<ul>\n<li>Sald\u0131rganlar\u0131n a\u011fa girmesini ve hassas verilere eri\u015fmesini \u00f6nler.<\/li>\n<li>Ki\u015fisel bilgiler, ticari s\u0131rlar ve finansal veriler gibi hassas verileri korumaya yard\u0131mc\u0131 olur.<\/li>\n<li>DDoS sald\u0131r\u0131lar\u0131, kimlik av\u0131 ve vir\u00fcs sald\u0131r\u0131lar\u0131 gibi yayg\u0131n sald\u0131r\u0131lar\u0131 engeller.<\/li>\n<li>Belirli IP adreslerine veya ba\u011flant\u0131 noktalar\u0131na uzaktan eri\u015fimi k\u0131s\u0131tlar.<\/li>\n<li>Belirli uygulamalar\u0131n internet eri\u015fimini kontrol eder.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Firewall_Nasil_Kurulur\"><\/span>Firewall Nas\u0131l Kurulur?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Firewall nas\u0131l kurulur?<\/strong> Sorusuna yan\u0131t olarak; Firewall kurulumu i\u00e7in donan\u0131m tabanl\u0131 ve yaz\u0131l\u0131m tabanl\u0131 olmak \u00fczere iki farkl\u0131 kurulum bulunmaktad\u0131r. G\u00fcvenlik duvarlar\u0131n\u0131n nas\u0131l kurulaca\u011f\u0131na dair detayl\u0131 bilgiler a\u015fa\u011f\u0131da yer almaktad\u0131r.<\/p>\n<p>Donan\u0131m Tabanl\u0131 G\u00fcvenlik Duvar\u0131 Kurulumu<\/p>\n<ul>\n<li>\u0130htiya\u00e7lar\u0131n\u0131za ve b\u00fct\u00e7enize uygun bir donan\u0131m tabanl\u0131 g\u00fcvenlik duvar\u0131 se\u00e7in. Farkl\u0131 \u00f6zelliklere ve fiyatlara sahip bir\u00e7ok farkl\u0131 model mevcuttur.<\/li>\n<li>G\u00fcvenlik duvar\u0131 cihaz\u0131 ile birlikte gelen talimatlar\u0131 takip ederek cihaz\u0131 kurun.<\/li>\n<li>Cihaz\u0131 internet ba\u011flant\u0131n\u0131z\u0131n modem veya y\u00f6nlendiricisine yak\u0131n bir yere yerle\u015ftirmeniz ve gerekli kablo ba\u011flant\u0131s\u0131n\u0131 yapman\u0131z gerekir.<\/li>\n<li>Cihaz\u0131n web aray\u00fcz\u00fcne eri\u015ferek g\u00fcvenlik duvar\u0131n\u0131 yap\u0131land\u0131rman\u0131z gerekir. Bu aray\u00fczde, izin verilen ve engellenen trafik t\u00fcrlerini, hangi portlar\u0131n a\u00e7\u0131k olaca\u011f\u0131n\u0131 ve di\u011fer g\u00fcvenlik ayarlar\u0131n\u0131 belirleyebilirsiniz.<\/li>\n<li>G\u00fcvenlik duvar\u0131 yaz\u0131l\u0131m\u0131n\u0131 her zaman g\u00fcncel tutmak \u00f6nemlidir. Bu, en son g\u00fcvenlik a\u00e7\u0131klar\u0131na kar\u015f\u0131 korunman\u0131z\u0131 sa\u011flar.<\/li>\n<\/ul>\n<p>Yaz\u0131l\u0131m Tabanl\u0131 G\u00fcvenlik Duvar\u0131 Kurulumu<\/p>\n<ul>\n<li>\u0130htiya\u00e7lar\u0131n\u0131za ve i\u015fletim sisteminize uygun bir yaz\u0131l\u0131m tabanl\u0131 g\u00fcvenlik duvar\u0131 se\u00e7in. Windows Defender G\u00fcvenlik Duvar\u0131 gibi \u00fccretsiz se\u00e7enekler veya \u00fccretli \u00fc\u00e7\u00fcnc\u00fc taraf se\u00e7enekler mevcuttur.<\/li>\n<li>Se\u00e7ti\u011finiz yaz\u0131l\u0131m\u0131 bilgisayar\u0131n\u0131za indirin ve y\u00fckleyin.<\/li>\n<li>Yaz\u0131l\u0131m\u0131n ayarlar\u0131n\u0131 a\u00e7arak izin verilen ve engellenen trafik t\u00fcrlerini, hangi portlar\u0131n a\u00e7\u0131k olaca\u011f\u0131n\u0131 ve di\u011fer g\u00fcvenlik ayarlar\u0131n\u0131 belirleyebilirsiniz.<\/li>\n<li>Yaz\u0131l\u0131m tabanl\u0131 g\u00fcvenlik duvar\u0131 yaz\u0131l\u0131m\u0131n\u0131 da her zaman g\u00fcncel tutmak \u00f6nemlidir.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Firewall_Nasil_Kapatilir\"><\/span>Firewall Nas\u0131l Kapat\u0131l\u0131r?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Firewall, bilgisayar\u0131n\u0131z\u0131n vir\u00fcslere, casus yaz\u0131l\u0131mlara ve di\u011fer \u00e7evrimi\u00e7i tehditlere kar\u015f\u0131 korunmas\u0131na yard\u0131mc\u0131 olur. Ancak baz\u0131 durumlarda, g\u00fcvenlik duvar\u0131 belirli programlar\u0131n veya oyunlar\u0131n \u00e7al\u0131\u015fmas\u0131n\u0131 engelleyebilir.<\/p>\n<p>\u00d6zellikle bu gibi durumlarda, sorunun kayna\u011f\u0131n\u0131 belirlemek ve sorunu \u00e7\u00f6zmek i\u00e7in g\u00fcvenlik duvar\u0131n\u0131 ge\u00e7ici olarak kapatman\u0131z gerekebilir. <strong>Firewall nas\u0131l kapat\u0131l\u0131r?<\/strong> Sorusuna yan\u0131t olarak farkl\u0131 i\u015fletim sistemlerinde firewall kapatma ad\u0131mlar\u0131 \u015f\u00f6yledir.<\/p>\n<p>Windows 10&#8217;da G\u00fcvenlik Duvar\u0131n\u0131 Kapatma<\/p>\n<ul>\n<li>Ba\u015flat men\u00fcs\u00fcn\u00fc a\u00e7\u0131n ve Ayarlar&#8217;a gidin.<\/li>\n<li>G\u00fcncelle\u015ftirme ve G\u00fcvenlik &gt; Windows G\u00fcvenli\u011fi &gt; G\u00fcvenlik Duvar\u0131 ve a\u011f korumas\u0131&#8217;n\u0131 se\u00e7in.<\/li>\n<li>Etkin a\u011f profilinizin alt\u0131nda Windows Defender G\u00fcvenlik Duvar\u0131&#8217;n\u0131 Kapal\u0131 olarak de\u011fi\u015ftirin.<\/li>\n<\/ul>\n<p>Mac&#8217;te G\u00fcvenlik Duvar\u0131n\u0131 Kapatma<\/p>\n<ul>\n<li>Apple men\u00fcs\u00fc &gt; Sistem Tercihleri&#8217;ne gidin.<\/li>\n<li>G\u00fcvenlik ve Gizlilik&#8217;i se\u00e7in.<\/li>\n<li>G\u00fcvenlik Duvar\u0131 sekmesine t\u0131klay\u0131n.<\/li>\n<li>G\u00fcvenlik Duvar\u0131&#8217;n\u0131 Kapat d\u00fc\u011fmesine t\u0131klay\u0131n.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Sikca_Sorulan_Sorular\"><\/span>S\u0131k\u00e7a Sorulan Sorular<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Guvenlik_duvari_turleri_nelerdir\"><\/span>G\u00fcvenlik duvar\u0131 t\u00fcrleri nelerdir?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Donan\u0131m G\u00fcvenlik Duvarlar\u0131, ayr\u0131 bir cihaz olarak kullan\u0131lan ve daha y\u00fcksek g\u00fcvenlik sa\u011flayan cihazlard\u0131r. Yaz\u0131l\u0131m G\u00fcvenlik Duvarlar\u0131, bilgisayar\u0131n\u0131zda \u00e7al\u0131\u015fan programlard\u0131r. Daha az maliyetlidirler ancak donan\u0131m kadar g\u00fcvenli olmayabilirler.<\/p>\n<p>Uygulama G\u00fcvenlik Duvarlar\u0131 ise belirli bir uygulaman\u0131n gelen ve giden trafi\u011fini kontrol eden g\u00fcvenlik duvarlar\u0131d\u0131r.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Guvenlik_duvari_olmadan_ne_olur\"><\/span>G\u00fcvenlik duvar\u0131 olmadan ne olur?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Bilgisayar\u0131n\u0131z ve a\u011f\u0131n\u0131z siber sald\u0131r\u0131lara kar\u015f\u0131 daha savunmas\u0131z hale gelir. Hackerlar, vir\u00fcsler ve di\u011fer tehditler kolayca bilgisayar\u0131n\u0131za s\u0131zabilir ve verilerinizi \u00e7alabilir veya zarar verebilir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"En_iyi_guvenlik_duvari_hangisidir\"><\/span>En iyi g\u00fcvenlik duvar\u0131 hangisidir?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0130htiya\u00e7lar\u0131n\u0131za ve b\u00fct\u00e7enize en uygun g\u00fcvenlik duvar\u0131n\u0131 se\u00e7meniz \u00f6nemlidir. Bir\u00e7ok farkl\u0131 se\u00e7enek mevcuttur.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Guvenlik_duvari_internetimi_yavaslatir_mi\"><\/span>G\u00fcvenlik duvar\u0131 internetimi yava\u015flat\u0131r m\u0131?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Do\u011fru \u015fekilde ayarlan\u0131rsa g\u00fcvenlik duvar\u0131 internet h\u0131z\u0131n\u0131z\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde etkilememelidir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Guvenlik_duvari_antivirus_programi_yerine_gecer_mi\"><\/span>G\u00fcvenlik duvar\u0131 antivir\u00fcs program\u0131 yerine ge\u00e7er mi?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>G\u00fcvenlik duvar\u0131 antivir\u00fcs program\u0131 yerine ge\u00e7mez. Her ikisi de farkl\u0131 ama\u00e7lar i\u00e7in kullan\u0131l\u0131r ve birbirini tamamlar.<\/p>\n<p><br data-mce-bogus=\"1\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>G\u00fcvenlik duvar\u0131 yani Firewall, bilgisayar\u0131n\u0131z\u0131 ve a\u011f\u0131n\u0131z\u0131 yetkisiz eri\u015fimden korumak i\u00e7in kullan\u0131lan bir a\u011f g\u00fcvenlik sistemidir. Bir kalenin surlar\u0131 gibi, g\u00fcvenlik duvar\u0131 da dijital ortamda savunma hatt\u0131n\u0131z\u0131n ilk ve en \u00f6nemli bile\u015fenidir. Firewall nedir? Sorusuna yan\u0131t olarak; G\u00fcvenlik duvar\u0131, gelen ve giden a\u011f trafi\u011fini izleyen ve \u00f6nceden tan\u0131mlanm\u0131\u015f kurallara g\u00f6re filtreleyen bir sistemdir. \u00d6zellikle bu [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[28,30,29],"class_list":["post-120","post","type-post","status-publish","format-standard","hentry","tag-firewall","tag-firewall-nedir-ne-i-e-yarar","tag-firewall-nedir"],"_links":{"self":[{"href":"https:\/\/www.hostingtry.com\/blog\/wp-json\/wp\/v2\/posts\/120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hostingtry.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hostingtry.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hostingtry.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hostingtry.com\/blog\/wp-json\/wp\/v2\/comments?post=120"}],"version-history":[{"count":0,"href":"https:\/\/www.hostingtry.com\/blog\/wp-json\/wp\/v2\/posts\/120\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hostingtry.com\/blog\/wp-json\/wp\/v2\/media?parent=120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hostingtry.com\/blog\/wp-json\/wp\/v2\/categories?post=120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hostingtry.com\/blog\/wp-json\/wp\/v2\/tags?post=120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}