{"id":1241,"date":"2026-09-09T14:45:14","date_gmt":"2026-09-09T11:45:14","guid":{"rendered":"https:\/\/www.verigom.com\/blog\/?p=1241"},"modified":"2026-09-09T15:08:30","modified_gmt":"2026-09-09T12:08:30","slug":"subnet-nedir","status":"publish","type":"post","link":"https:\/\/www.verigom.com\/blog\/subnet-nedir\/","title":{"rendered":"Subnet Nedir, Ne \u0130\u015fe Yarar?"},"content":{"rendered":"<p class=\"isSelectedEnd\">Subnet (alt a\u011f), bir IP a\u011f\u0131n\u0131n daha k\u00fc\u00e7\u00fck ve y\u00f6netilebilir a\u011f b\u00f6l\u00fcmlerine ayr\u0131lmas\u0131yla olu\u015fturulan mant\u0131ksal a\u011f yap\u0131s\u0131d\u0131r. \u00d6zellikle kurumsal a\u011flar, veri merkezleri ve <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/www.verigom.com\/hosting\/\"><strong>hosting<\/strong><\/a><\/span> altyap\u0131lar\u0131nda \u00e7ok say\u0131da sistemin bulundu\u011fu a\u011flar\u0131n d\u00fczenlenmesi, a\u011f trafi\u011finin kontrol edilmesi ve farkl\u0131 sistemlerin birbirinden ayr\u0131lmas\u0131 amac\u0131yla subnet kullan\u0131labilir.<\/p>\n<p>Subnet yap\u0131s\u0131n\u0131 anlayabilmek i\u00e7in \u00f6ncelikle IP adresi kavram\u0131n\u0131n bilinmesi gerekir. A\u011f \u00fczerindeki cihazlar\u0131n tan\u0131mlanmas\u0131n\u0131 sa\u011flayan IP adresleri, subnet yap\u0131s\u0131 sayesinde belirli a\u011f b\u00f6l\u00fcmleri i\u00e7erisinde grupland\u0131r\u0131labilir. B\u00f6ylece tek ve b\u00fcy\u00fck bir a\u011f yerine farkl\u0131 ihtiya\u00e7lara g\u00f6re planlanm\u0131\u015f daha k\u00fc\u00e7\u00fck alt a\u011flar olu\u015fturulabilir.<\/p>\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 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.verigom.com\/blog\/subnet-nedir\/#Subnet_Alt_Ag_Nedir\" >Subnet (Alt A\u011f) Nedir?<\/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.verigom.com\/blog\/subnet-nedir\/#Subnet_Ne_Ise_Yarar\" >Subnet 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-3\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_Nasil_Calisir\" >Subnet 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.verigom.com\/blog\/subnet-nedir\/#Subnet_Mask_Nedir\" >Subnet Mask Nedir?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_Mask_Ne_Ise_Yarar\" >Subnet Mask Ne \u0130\u015fe Yarar?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#CIDR_Nedir\" >CIDR Nedir?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#CIDR_ile_Subnet_Mask_Arasindaki_Iliski\" >CIDR ile Subnet Mask Aras\u0131ndaki \u0130li\u015fki<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_Nasil_Hesaplanir\" >Subnet Nas\u0131l Hesaplan\u0131r?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_Hesaplama_Ornegi\" >Subnet Hesaplama \u00d6rne\u011fi<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Network_Adresi_ve_Broadcast_Adresi_Kavramlari\" >Network Adresi ve Broadcast Adresi Kavramlar\u0131<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Network_Adresi_Nedir\" >Network Adresi Nedir?<\/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.verigom.com\/blog\/subnet-nedir\/#Broadcast_Adresi_Nedir\" >Broadcast Adresi Nedir?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_Kullanmanin_Avantajlari_Nelerdir\" >Subnet Kullanman\u0131n Avantajlar\u0131 Nelerdir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_ile_VLAN_Arasindaki_Fark_Nedir\" >Subnet ile VLAN Aras\u0131ndaki Fark Nedir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#IPv4_ve_IPv6da_Subnet_Kullanimi\" >IPv4 ve IPv6&#8217;da Subnet Kullan\u0131m\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Sunucu_Altyapilarinda_Subnet_Neden_Kullanilir\" >Sunucu Altyap\u0131lar\u0131nda Subnet Neden Kullan\u0131l\u0131r?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_ile_Ilgili_Temel_Kavramlar\" >Subnet ile \u0130lgili Temel Kavramlar<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.verigom.com\/blog\/subnet-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-19\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_ve_subnet_mask_ayni_sey_mi\" >Subnet ve subnet mask ayn\u0131 \u015fey mi?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#255255255224_hangi_subnet\" >255.255.255.224 hangi subnet?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_mask_kac_olmali\" >Subnet mask ka\u00e7 olmal\u0131?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#24_subnet_ne_anlama_gelir\" >\/24 subnet ne anlama gelir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Bir_subnette_kac_IP_adresi_kullanilabilir\" >Bir subnet&#8217;te ka\u00e7 IP adresi kullan\u0131labilir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#IP_adresinden_subnet_nasil_bulunur\" >IP adresinden subnet nas\u0131l bulunur?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_neden_kullanilir\" >Subnet neden kullan\u0131l\u0131r?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#Subnet_ile_gateway_ayni_sey_mi\" >Subnet ile gateway ayn\u0131 \u015fey mi?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.verigom.com\/blog\/subnet-nedir\/#IPv6da_subnet_kullanilir_mi\" >IPv6&#8217;da subnet kullan\u0131l\u0131r m\u0131?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Subnet_Alt_Ag_Nedir\"><\/span><span style=\"font-weight: 400;\">Subnet (Alt A\u011f) Nedir?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Subnet, \u0130ngilizce \u201csubnetwork\u201d ifadesinin k\u0131saltmas\u0131 olup T\u00fcrk\u00e7ede \u201calt a\u011f\u201d anlam\u0131na gelir. Temel olarak mevcut bir IP a\u011f\u0131n\u0131n daha k\u00fc\u00e7\u00fck mant\u0131ksal a\u011flara b\u00f6l\u00fcnmesini ifade eder.<\/p>\n<p>Mesela bir \u015firket a\u011f\u0131nda \u00e7al\u0131\u015fan bilgisayarlar, sunucular ve farkl\u0131 departmanlara ait cihazlar\u0131n tamam\u0131n\u0131 ayn\u0131 a\u011f i\u00e7erisinde tutmak yerine farkl\u0131 subnet&#8217;lere ay\u0131rmak m\u00fcmk\u00fcnd\u00fcr. Bu yakla\u015f\u0131m IP adreslerinin daha d\u00fczenli planlanmas\u0131n\u0131 ve a\u011f b\u00f6l\u00fcmlerinin daha kontroll\u00fc y\u00f6netilmesini sa\u011flar.<\/p>\n<p>Basit bir a\u011f yap\u0131s\u0131 \u015fu \u015fekilde d\u00fc\u015f\u00fcn\u00fclebilir;<\/p>\n<p><strong>Network (A\u011f) \u2192 Subnet (Alt A\u011f) \u2192 Host (Cihaz)<\/strong><\/p>\n<p>Burada network genel a\u011f\u0131, subnet a\u011f\u0131n belirli bir b\u00f6l\u00fcm\u00fcn\u00fc, host ise ilgili alt a\u011f i\u00e7erisinde bulunan bilgisayar, sunucu veya di\u011fer a\u011f cihazlar\u0131n\u0131 ifade eder.<\/p>\n<div style=\"background-color: #fffaf5; border: 1px solid #fed7aa; border-left: 5px solid #f97316; padding: 20px; border-radius: 6px; margin: 20px 0; font-family: sans-serif;\">\n<p style=\"margin: 0 0 8px 0; color: #1e293b; font-weight: bold; font-size: 16px; display: flex; align-items: center; gap: 8px;\">\ud83c\udf10 Subnet Mimarisi<\/p>\n<p style=\"margin: 0; color: #334155; font-size: 16px; line-height: 1.5;\">B\u00fcy\u00fck a\u011flar\u0131 alt a\u011flara (subnet) b\u00f6lmek <strong>a\u011f \u00fczerindeki yay\u0131n trafi\u011fini azaltarak<\/strong> ve g\u00fcvenlik duvarlar\u0131n\u0131n farkl\u0131 departmanlar veya sunucu gruplar\u0131 i\u00e7in daha hassas kurallar uygulamas\u0131na olanak tan\u0131maktad\u0131r.<\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Subnet_Ne_Ise_Yarar\"><\/span><span style=\"font-weight: 400;\">Subnet Ne \u0130\u015fe Yarar?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Subnet kullan\u0131m\u0131n\u0131n temel amac\u0131 b\u00fcy\u00fck a\u011f yap\u0131lar\u0131n\u0131 daha k\u00fc\u00e7\u00fck ve y\u00f6netilebilir b\u00f6l\u00fcmlere ay\u0131rmakt\u0131r. \u00d6zellikle cihaz say\u0131s\u0131n\u0131n y\u00fcksek oldu\u011fu kurumsal a\u011flarda veya sunucu altyap\u0131lar\u0131nda a\u011f\u0131n tamam\u0131n\u0131 tek bir b\u00f6l\u00fcm olarak y\u00f6netmek yerine farkl\u0131 alt a\u011flar olu\u015fturulabilir.<\/p>\n<p>Subnet kullan\u0131m\u0131n\u0131n sa\u011flad\u0131\u011f\u0131 ba\u015fl\u0131ca avantajlar \u015funlard\u0131r:<\/p>\n<ul>\n<li>B\u00fcy\u00fck a\u011flar\u0131n daha k\u00fc\u00e7\u00fck b\u00f6l\u00fcmlere ayr\u0131lmas\u0131n\u0131 sa\u011flar.<\/li>\n<li>IP adreslerinin daha planl\u0131 kullan\u0131lmas\u0131na yard\u0131mc\u0131 olur.<\/li>\n<li>Broadcast alanlar\u0131n\u0131n k\u00fc\u00e7\u00fclt\u00fclmesini sa\u011flar.<\/li>\n<li>A\u011f trafi\u011finin daha kontroll\u00fc y\u00f6netilmesine yard\u0131mc\u0131 olur.<\/li>\n<li>Farkl\u0131 cihaz veya sistem gruplar\u0131n\u0131n mant\u0131ksal olarak ayr\u0131lmas\u0131n\u0131 sa\u011flar.<\/li>\n<li>A\u011f y\u00f6netimini ve sorun tespitini kolayla\u015ft\u0131rabilir.<\/li>\n<li>G\u00fcvenlik politikalar\u0131n\u0131n farkl\u0131 a\u011f b\u00f6l\u00fcmlerine g\u00f6re uygulanmas\u0131na imk\u00e2n tan\u0131r.<\/li>\n<\/ul>\n<p>\u00d6rnek olarak bir i\u015fletmede muhasebe, y\u00f6netim ve teknik ekiplerin kulland\u0131\u011f\u0131 cihazlar farkl\u0131 subnet&#8217;lerde konumland\u0131r\u0131labilir. Benzer \u015fekilde <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/www.verigom.com\/vds-server\/\"><strong>VDS server<\/strong><\/a><\/span>\u00a0ve di\u011fer sanal sunucu altyap\u0131lar\u0131nda belirli sunucu gruplar\u0131n\u0131n farkl\u0131 a\u011f segmentlerinde konumland\u0131r\u0131lmas\u0131 i\u00e7in subnet yap\u0131lar\u0131ndan yararlan\u0131labilir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Subnet_Nasil_Calisir\"><\/span><span style=\"font-weight: 400;\">Subnet Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-1249 aligncenter\" src=\"https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast.webp\" alt=\"Network ve Broadcast\" width=\"642\" height=\"428\" srcset=\"https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast.webp 1536w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast-300x200.webp 300w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast-1024x683.webp 1024w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast-768x512.webp 768w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast-414x276.webp 414w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast-470x313.webp 470w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast-640x426.webp 640w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast-130x86.webp 130w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast-187x124.webp 187w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast-990x660.webp 990w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/network-ve-broadcast-1320x880.webp 1320w\" sizes=\"auto, (max-width: 642px) 100vw, 642px\" \/> Subnet yap\u0131s\u0131n\u0131n \u00e7al\u0131\u015fma mant\u0131\u011f\u0131, IP adresinin a\u011f ve cihaz b\u00f6l\u00fcmlerinin belirlenmesine dayan\u0131r. Bir IP adresinin hangi k\u0131sm\u0131n\u0131n a\u011f\u0131, hangi k\u0131sm\u0131n\u0131n o a\u011f i\u00e7erisindeki cihaz\u0131 temsil etti\u011fi subnet mask veya CIDR g\u00f6sterimi kullan\u0131larak belirlenir. Birlikte a\u015fa\u011f\u0131daki a\u011f\u0131 ele alal\u0131m;<\/p>\n<p><code>192.168.1.0\/24<\/code><\/p>\n<p>Buradaki <code>192.168.1.0<\/code> a\u011f adresini, <code>\/24<\/code> ise a\u011f prefix uzunlu\u011funu g\u00f6sterir. <code>\/24<\/code>, IPv4 adresindeki 32 bitin ilk 24 bitinin a\u011f k\u0131sm\u0131 i\u00e7in kullan\u0131ld\u0131\u011f\u0131n\u0131 ifade eder.<\/p>\n<p>Bu a\u011f i\u00e7erisinde adreslerin hangi ama\u00e7larla kullan\u0131labilece\u011fi subnet yap\u0131s\u0131na g\u00f6re belirlenir. IPv4&#8217;te klasik bir <code>\/24<\/code> subnet i\u00e7erisinde toplam 256 adres bulunur. Geleneksel subnet kullan\u0131m\u0131nda a\u011f adresi ve broadcast adresi hostlara atanmad\u0131\u011f\u0131ndan 254 adres cihazlara atanabilir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Subnet_Mask_Nedir\"><\/span><span style=\"font-weight: 400;\">Subnet Mask Nedir?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Subnet mask, bir IPv4 adresinin hangi b\u00f6l\u00fcm\u00fcn\u00fcn a\u011f\u0131 ve hangi b\u00f6l\u00fcm\u00fcn\u00fcn hostlar\u0131 temsil etti\u011fini belirlemeye yard\u0131mc\u0131 olan 32 bitlik de\u011ferdir. Genellikle IP adresine benzer \u015fekilde d\u00f6rt ondal\u0131k say\u0131dan olu\u015fan formatta g\u00f6sterilir.<\/p>\n<p>\u00d6rne\u011fin:<\/p>\n<p><strong>IP adresi:<\/strong> <code>192.168.1.10<\/code><br \/>\n<strong>Subnet mask:<\/strong> <code>255.255.255.0<\/code><\/p>\n<p><code>255.255.255.0<\/code> subnet mask de\u011feri <code>\/24<\/code> CIDR g\u00f6sterimine kar\u015f\u0131l\u0131k gelir.<\/p>\n<div style=\"background-color: #fffaf5; border: 1px solid #fed7aa; border-left: 5px solid #f97316; padding: 20px; border-radius: 6px; margin: 20px 0; font-family: sans-serif;\">\n<p style=\"margin: 0 0 8px 0; color: #1e293b; font-weight: bold; font-size: 16px; display: flex; align-items: center; gap: 8px;\">\ud83d\udd0d Subnet (Alt A\u011f) Maskesinin Rol\u00fc<\/p>\n<p style=\"margin: 0; color: #334155; font-size: 16px; line-height: 1.5;\">Subnet mask, y\u00f6nlendiricilerin (routers) gelen veri paketinin <strong>hangi yerel a\u011f segmentine iletilmesi gerekti\u011fini<\/strong> h\u0131zl\u0131ca hesaplamas\u0131n\u0131 sa\u011flayan bit d\u00fczeyinde bir filtreleme anahtar\u0131d\u0131r.<\/p>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"Subnet_Mask_Ne_Ise_Yarar\"><\/span><span style=\"font-weight: 400;\">Subnet Mask Ne \u0130\u015fe Yarar?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Bir cihaz ba\u015fka bir IP adresiyle ileti\u015fim kurmak istedi\u011finde hedef adresin kendi yerel a\u011f\u0131 i\u00e7erisinde olup olmad\u0131\u011f\u0131n\u0131 belirlemesi gerekir. Subnet mask, cihaz\u0131n kendi <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/www.verigom.com\/blog\/ip-adresi-nedir-ip-adresi-sorgulama-nasil-yapilir\/\"><strong>IP adresi<\/strong><\/a><\/span> ile hedef IP adresinin a\u011f k\u0131sm\u0131n\u0131 de\u011ferlendirmesine yard\u0131mc\u0131 olur.<\/p>\n<p>Hedef ayn\u0131 subnet i\u00e7erisindeyse ileti\u015fim yerel a\u011f \u00fczerinden ger\u00e7ekle\u015ftirilebilir. Hedef farkl\u0131 bir a\u011fdaysa trafik genellikle varsay\u0131lan a\u011f ge\u00e7idine (default gateway) y\u00f6nlendirilir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CIDR_Nedir\"><\/span><span style=\"font-weight: 400;\">CIDR Nedir?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>CIDR (Classless Inter-Domain Routing), IP a\u011flar\u0131n\u0131n ve prefix uzunluklar\u0131n\u0131n daha esnek \u015fekilde tan\u0131mlanmas\u0131n\u0131 sa\u011flayan adresleme y\u00f6ntemidir. IP adresinin yan\u0131nda <code>\/<\/code> i\u015faretinden sonra kullan\u0131lan say\u0131, a\u011f prefix&#8217;inin ka\u00e7 bitten olu\u015ftu\u011funu g\u00f6sterir.<\/p>\n<p>\u00d6rne\u011fin:<\/p>\n<p><code>192.168.1.0\/24<\/code><\/p>\n<p>ifadesindeki <code>\/24<\/code>, ilk 24 bitin a\u011f prefix&#8217;i olarak kullan\u0131ld\u0131\u011f\u0131n\u0131 belirtir. Prefix uzunlu\u011fu artt\u0131k\u00e7a subnet i\u00e7erisindeki toplam adres say\u0131s\u0131 azal\u0131r.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"CIDR_ile_Subnet_Mask_Arasindaki_Iliski\"><\/span><span style=\"font-weight: 400;\">CIDR ile Subnet Mask Aras\u0131ndaki \u0130li\u015fki<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Yayg\u0131n kullan\u0131lan baz\u0131 IPv4 CIDR de\u011ferleri ve kar\u015f\u0131l\u0131k gelen subnet mask de\u011ferleri \u015f\u00f6yledir;<\/p>\n<div style=\"margin: 30px 0; font-family: sans-serif; overflow-x: auto;\">\n<table style=\"width: 100%; border-collapse: collapse; background-color: #ffffff; border: 1px solid #fed7aa; border-radius: 8px; overflow: hidden; text-align: left; font-size: 15px;\">\n<thead>\n<tr style=\"background-color: #f97316; color: #ffffff;\">\n<th style=\"padding: 16px 20px; font-weight: bold; width: 15%;\">CIDR<\/th>\n<th style=\"padding: 16px 20px; font-weight: bold; width: 30%;\">Subnet Mask<\/th>\n<th style=\"padding: 16px 20px; font-weight: bold; width: 25%;\">Toplam Adres<\/th>\n<th style=\"padding: 16px 20px; font-weight: bold; width: 30%;\">Geleneksel Kullan\u0131labilir Host<\/th>\n<\/tr>\n<\/thead>\n<tbody style=\"color: #334155;\">\n<tr style=\"border-bottom: 1px solid #ffedd5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">\/8<\/td>\n<td style=\"padding: 14px 20px;\">255.0.0.0<\/td>\n<td style=\"padding: 14px 20px;\">16.777.216<\/td>\n<td style=\"padding: 14px 20px;\">16.777.214<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #ffedd5; background-color: #fffaf5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">\/16<\/td>\n<td style=\"padding: 14px 20px;\">255.255.0.0<\/td>\n<td style=\"padding: 14px 20px;\">65.536<\/td>\n<td style=\"padding: 14px 20px;\">65.534<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #ffedd5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">\/24<\/td>\n<td style=\"padding: 14px 20px;\">255.255.255.0<\/td>\n<td style=\"padding: 14px 20px;\">256<\/td>\n<td style=\"padding: 14px 20px;\">254<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #ffedd5; background-color: #fffaf5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">\/25<\/td>\n<td style=\"padding: 14px 20px;\">255.255.255.128<\/td>\n<td style=\"padding: 14px 20px;\">128<\/td>\n<td style=\"padding: 14px 20px;\">126<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #ffedd5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">\/26<\/td>\n<td style=\"padding: 14px 20px;\">255.255.255.192<\/td>\n<td style=\"padding: 14px 20px;\">64<\/td>\n<td style=\"padding: 14px 20px;\">62<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #ffedd5; background-color: #fffaf5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">\/27<\/td>\n<td style=\"padding: 14px 20px;\">255.255.255.224<\/td>\n<td style=\"padding: 14px 20px;\">32<\/td>\n<td style=\"padding: 14px 20px;\">30<\/td>\n<\/tr>\n<tr style=\"background-color: #fffaf5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">\/28<\/td>\n<td style=\"padding: 14px 20px;\">255.255.255.240<\/td>\n<td style=\"padding: 14px 20px;\">16<\/td>\n<td style=\"padding: 14px 20px;\">14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Tablodaki kullan\u0131labilir host say\u0131lar\u0131 geleneksel IPv4 subnet hesaplamas\u0131na g\u00f6re verilmi\u015ftir. <code>\/31<\/code> gibi \u00f6zel kullan\u0131m senaryolar\u0131nda bu genel hesaplama y\u00f6ntemi farkl\u0131l\u0131k g\u00f6sterebilir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Subnet_Nasil_Hesaplanir\"><\/span><span style=\"font-weight: 400;\">Subnet Nas\u0131l Hesaplan\u0131r?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Subnet hesaplamas\u0131nda ama\u00e7 belirli bir IP adresinin hangi a\u011fa ait oldu\u011funu, ilgili a\u011fdaki adres aral\u0131\u011f\u0131n\u0131 ve kullan\u0131labilir host adreslerini belirlemektir. \u015eu ad\u0131mlar\u0131 takip ederek subnet hesaplamas\u0131n\u0131 tamamlayabilirsiniz;<\/p>\n<ol>\n<li>IP adresi belirlenir.<\/li>\n<li>CIDR veya subnet mask de\u011feri tespit edilir.<\/li>\n<li>Subnet&#8217;in toplam adres kapasitesi hesaplan\u0131r.<\/li>\n<li>Network adresi belirlenir.<\/li>\n<li>Broadcast adresi bulunur.<\/li>\n<li>Kullan\u0131labilir host adres aral\u0131\u011f\u0131 hesaplan\u0131r.<\/li>\n<\/ol>\n<p>IPv4 i\u00e7in toplam adres say\u0131s\u0131 a\u015fa\u011f\u0131daki form\u00fclle hesaplanabilir:<\/p>\n<p><strong>Toplam adres say\u0131s\u0131 = 2^(32 \u2212 prefix uzunlu\u011fu)<\/strong><\/p>\n<p>\u00d6rne\u011fin <code>\/26<\/code> i\u00e7in:<\/p>\n<p><strong>2^(32 \u2212 26) = 64<\/strong><\/p>\n<p>Dolay\u0131s\u0131yla bir <code>\/26<\/code> subnet toplam 64 IPv4 adresi i\u00e7erir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Subnet_Hesaplama_Ornegi\"><\/span><span style=\"font-weight: 400;\">Subnet Hesaplama \u00d6rne\u011fi<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u00d6rnek olarak a\u015fa\u011f\u0131daki IP adresini ele alal\u0131m:<\/p>\n<p><strong>IP adresi:<\/strong> <code>192.168.1.70<\/code><br \/>\n<strong>CIDR:<\/strong> <code>\/26<\/code><br \/>\n<strong>Subnet Mask:<\/strong> <code>255.255.255.192<\/code><\/p>\n<p>Bir <code>\/26<\/code> a\u011f\u0131nda her subnet 64 adres i\u00e7erir. Son oktette subnet s\u0131n\u0131rlar\u0131 \u015fu \u015fekilde olu\u015fur:<\/p>\n<ul>\n<li>0\u201363<\/li>\n<li>64\u2013127<\/li>\n<li>128\u2013191<\/li>\n<li>192\u2013255<\/li>\n<\/ul>\n<p><code>192.168.1.70<\/code> adresi 64\u2013127 aral\u0131\u011f\u0131nda bulundu\u011fu i\u00e7in sonu\u00e7 \u015f\u00f6yledir:<\/p>\n<p><strong>Network adresi:<\/strong> <code>192.168.1.64<\/code><br \/>\n<strong>\u0130lk kullan\u0131labilir IP:<\/strong> <code>192.168.1.65<\/code><br \/>\n<strong>Son kullan\u0131labilir IP:<\/strong> <code>192.168.1.126<\/code><br \/>\n<strong>Broadcast adresi:<\/strong> <code>192.168.1.127<\/code><br \/>\n<strong>Toplam adres:<\/strong> 64<br \/>\n<strong>Geleneksel kullan\u0131labilir host:<\/strong> 62<\/p>\n<p>Bu y\u00f6ntem farkl\u0131 CIDR de\u011ferleri i\u00e7in de uygulanarak ilgili subnet&#8217;in adres aral\u0131\u011f\u0131 hesaplanabilir.<\/p>\n<div style=\"background-color: #fffaf5; border: 1px solid #fed7aa; border-left: 5px solid #f97316; padding: 20px; border-radius: 6px; margin: 20px 0; font-family: sans-serif;\">\n<p style=\"margin: 0 0 8px 0; color: #1e293b; font-weight: bold; font-size: 16px; display: flex; align-items: center; gap: 8px;\">\ud83e\uddee Pratik Hesaplama \u0130pucu<\/p>\n<p style=\"margin: 0; color: #334155; font-size: 16px; line-height: 1.5;\">Subnet planlamas\u0131 yaparken a\u011f\u0131n\u0131zda ka\u00e7 cihaza (host) ihtiya\u00e7 duydu\u011funuzu \u00f6nceden belirlemeniz do\u011fru CIDR prefix de\u011ferini se\u00e7erek IP adreslerinin bo\u015fa gitmesini engeller.<\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Network_Adresi_ve_Broadcast_Adresi_Kavramlari\"><\/span><span style=\"font-weight: 400;\">Network Adresi ve Broadcast Adresi Kavramlar\u0131<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Subnet hesaplamalar\u0131nda network ve broadcast adresleri \u00f6nemli iki kavramd\u0131r. \u00d6zellikle IPv4 a\u011flar\u0131nda bu adreslerin i\u015flevlerinin bilinmesi, kullan\u0131labilir IP aral\u0131\u011f\u0131n\u0131n do\u011fru hesaplanmas\u0131n\u0131 sa\u011flar.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1250\" src=\"https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir.webp\" alt=\"Subnet Nas\u0131l \u00c7al\u0131\u015f\u0131r?\" width=\"691\" height=\"461\" srcset=\"https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir.webp 1536w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir-300x200.webp 300w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir-1024x683.webp 1024w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir-768x512.webp 768w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir-414x276.webp 414w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir-470x313.webp 470w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir-640x426.webp 640w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir-130x86.webp 130w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir-187x124.webp 187w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir-990x660.webp 990w, https:\/\/www.verigom.com\/blog\/wp-content\/uploads\/2026\/09\/subnet-nasil-calisir-1320x880.webp 1320w\" sizes=\"auto, (max-width: 691px) 100vw, 691px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Network_Adresi_Nedir\"><\/span><span style=\"font-weight: 400;\">Network Adresi Nedir?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Network adresi, ilgili subnet&#8217;i tan\u0131mlayan adrestir. Geleneksel IPv4 subnet yap\u0131s\u0131nda hostlara atanmaz.<\/p>\n<p>Buna bir \u00f6rnek olarak <code>192.168.1.0\/24<\/code> a\u011f\u0131nda <code>192.168.1.0<\/code> network adresidir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Broadcast_Adresi_Nedir\"><\/span><span style=\"font-weight: 400;\">Broadcast Adresi Nedir?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Broadcast adresi, geleneksel IPv4 subnet i\u00e7erisinde t\u00fcm hostlara y\u00f6nelik broadcast ileti\u015fiminde kullan\u0131lan \u00f6zel adrestir. Bu adres de normal bir host adresi olarak kullan\u0131lmaz.<\/p>\n<p><code>192.168.1.0\/24<\/code> subnetinde broadcast adresi <code>192.168.1.255<\/code> olur.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Subnet_Kullanmanin_Avantajlari_Nelerdir\"><\/span><span style=\"font-weight: 400;\">Subnet Kullanman\u0131n Avantajlar\u0131 Nelerdir?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Subnetting yaln\u0131zca IP adreslerini farkl\u0131 gruplara ay\u0131rmak i\u00e7in kullan\u0131lmaz. Do\u011fru bir a\u011f planlamas\u0131 yap\u0131ld\u0131\u011f\u0131nda y\u00f6netim, performans ve g\u00fcvenlik a\u00e7\u0131s\u0131ndan \u00e7e\u015fitli avantajlar sa\u011flayabilir. Ba\u015fl\u0131ca avantajlar\u0131 \u015fu \u015fekildedir;<\/p>\n<ul>\n<li>A\u011f yap\u0131s\u0131n\u0131n daha d\u00fczenli planlanmas\u0131n\u0131 sa\u011flar.<\/li>\n<li>Broadcast domain&#8217;lerinin k\u00fc\u00e7\u00fclt\u00fclmesine yard\u0131mc\u0131 olur.<\/li>\n<li>IP adreslerinin ihtiya\u00e7lara g\u00f6re da\u011f\u0131t\u0131lmas\u0131n\u0131 kolayla\u015ft\u0131r\u0131r.<\/li>\n<li>Departman, sunucu veya cihaz gruplar\u0131n\u0131n ayr\u0131lmas\u0131n\u0131 sa\u011flar.<\/li>\n<li>A\u011f sorunlar\u0131n\u0131n belirli segmentlerde izole edilmesini kolayla\u015ft\u0131rabilir.<\/li>\n<li>Y\u00f6nlendirme ve g\u00fcvenlik politikalar\u0131n\u0131n daha kontroll\u00fc uygulanmas\u0131na yard\u0131mc\u0131 olur.<\/li>\n<\/ul>\n<p>Subnet yap\u0131s\u0131n\u0131n tek ba\u015f\u0131na bir g\u00fcvenlik mekanizmas\u0131 olmad\u0131\u011f\u0131 unutulmamal\u0131d\u0131r. A\u011f segmentleri aras\u0131ndaki eri\u015fimin kontrol edilmesi i\u00e7in firewall, ACL ve benzeri g\u00fcvenlik politikalar\u0131n\u0131n ayr\u0131ca yap\u0131land\u0131r\u0131lmas\u0131 gerekebilir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Subnet_ile_VLAN_Arasindaki_Fark_Nedir\"><\/span><span style=\"font-weight: 400;\">Subnet ile VLAN Aras\u0131ndaki Fark Nedir?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Subnet ve VLAN, a\u011flar\u0131 mant\u0131ksal b\u00f6l\u00fcmlere ay\u0131rmak i\u00e7in kullan\u0131lan ancak farkl\u0131 katmanlarda \u00e7al\u0131\u015fan kavramlard\u0131r. Subnet IP adresleme ve Layer 3 a\u011f yap\u0131s\u0131yla ili\u015fkiliyken VLAN, Ethernet a\u011flar\u0131n\u0131n Layer 2 seviyesinde mant\u0131ksal olarak b\u00f6l\u00fcmlendirilmesini sa\u011flar.<\/p>\n<p>Pratik a\u011f tasar\u0131mlar\u0131nda VLAN ve subnet s\u0131kl\u0131kla birlikte kullan\u0131l\u0131r. \u00d6rne\u011fin belirli bir departman i\u00e7in ayr\u0131 VLAN olu\u015fturulabilir ve bu VLAN&#8217;a ayr\u0131 bir IP subnet&#8217;i atanabilir.<\/p>\n<div style=\"margin: 30px 0; font-family: sans-serif; overflow-x: auto;\">\n<table style=\"width: 100%; border-collapse: collapse; background-color: #ffffff; border: 1px solid #fed7aa; border-radius: 8px; overflow: hidden; text-align: left; font-size: 15px;\">\n<thead>\n<tr style=\"background-color: #f97316; color: #ffffff;\">\n<th style=\"padding: 16px 20px; font-weight: bold; width: 25%;\">\u00d6zellik<\/th>\n<th style=\"padding: 16px 20px; font-weight: bold; width: 35%;\">Subnet<\/th>\n<th style=\"padding: 16px 20px; font-weight: bold; width: 40%;\">VLAN<\/th>\n<\/tr>\n<\/thead>\n<tbody style=\"color: #334155;\">\n<tr style=\"border-bottom: 1px solid #ffedd5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">Temel ama\u00e7<\/td>\n<td style=\"padding: 14px 20px;\">IP a\u011f\u0131n\u0131 b\u00f6l\u00fcmlere ay\u0131rmak<\/td>\n<td style=\"padding: 14px 20px;\">Layer 2 a\u011f\u0131 mant\u0131ksal olarak ay\u0131rmak<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #ffedd5; background-color: #fffaf5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">\u0130li\u015fkili katman<\/td>\n<td style=\"padding: 14px 20px;\">Layer 3<\/td>\n<td style=\"padding: 14px 20px;\">Layer 2<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #ffedd5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">Temel yap\u0131<\/td>\n<td style=\"padding: 14px 20px;\">IP adresi ve prefix<\/td>\n<td style=\"padding: 14px 20px;\">VLAN ID<\/td>\n<\/tr>\n<tr style=\"background-color: #fffaf5;\">\n<td style=\"padding: 14px 20px; font-weight: bold; color: #c2410c;\">Y\u00f6nlendirme<\/td>\n<td style=\"padding: 14px 20px;\">Farkl\u0131 subnet&#8217;ler aras\u0131nda gerekir<\/td>\n<td style=\"padding: 14px 20px;\">VLAN&#8217;lar aras\u0131 ileti\u015fim i\u00e7in Layer 3 gerekir<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Bu iki kavram birbirinin alternatifi olmaktan ziyade a\u011f tasar\u0131m\u0131nda birbirini tamamlayabilir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"IPv4_ve_IPv6da_Subnet_Kullanimi\"><\/span><span style=\"font-weight: 400;\">IPv4 ve IPv6&#8217;da Subnet Kullan\u0131m\u0131<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>IPv4<\/strong> adresleri 32 bitten olu\u015fur ve subnetting \u00f6zellikle s\u0131n\u0131rl\u0131 adres alan\u0131n\u0131n planlanmas\u0131 a\u00e7\u0131s\u0131ndan uzun y\u0131llard\u0131r kullan\u0131lmaktad\u0131r. CIDR sayesinde <code>\/24<\/code>, <code>\/26<\/code> ve <code>\/28<\/code> gibi farkl\u0131 prefix uzunluklar\u0131 kullan\u0131larak ihtiyaca g\u00f6re a\u011flar olu\u015fturulabilir.<\/p>\n<p><strong>IPv6<\/strong> ise 128 bitlik \u00e7ok daha geni\u015f bir adres alan\u0131na sahiptir. IPv6&#8217;da da a\u011flar prefix&#8217;ler kullan\u0131larak b\u00f6l\u00fcmlendirilir ancak adres alan\u0131n\u0131n b\u00fcy\u00fckl\u00fc\u011f\u00fc nedeniyle subnet planlamas\u0131n\u0131n yakla\u015f\u0131m\u0131 IPv4&#8217;ten farkl\u0131d\u0131r. IPv6 LAN subnet&#8217;lerinde <code>\/64<\/code> prefix kullan\u0131m\u0131 olduk\u00e7a yayg\u0131nd\u0131r.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Sunucu_Altyapilarinda_Subnet_Neden_Kullanilir\"><\/span><span style=\"font-weight: 400;\">Sunucu Altyap\u0131lar\u0131nda Subnet Neden Kullan\u0131l\u0131r?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Subnet kullan\u0131m\u0131 veri merkezleri, bulut sistemleri ve sanal sunucu altyap\u0131lar\u0131nda a\u011f organizasyonunun \u00f6nemli par\u00e7alar\u0131ndan biridir. Web sunucular\u0131, veritaban\u0131 sistemleri, y\u00f6netim servisleri veya farkl\u0131 uygulama katmanlar\u0131 ihtiya\u00e7lara g\u00f6re ayr\u0131 a\u011f segmentlerinde konumland\u0131r\u0131labilir.<\/p>\n<p>\u00d6rnek olarak internete do\u011frudan eri\u015fmesi gerekmeyen veritaban\u0131 sunucular\u0131 private bir subnet i\u00e7erisinde konumland\u0131r\u0131l\u0131rken d\u0131\u015f d\u00fcnyadan ba\u011flant\u0131 kabul eden web sunucular\u0131 farkl\u0131 bir a\u011f segmentinde \u00e7al\u0131\u015ft\u0131r\u0131labilir. Subnet&#8217;ler aras\u0131ndaki trafik ise router, firewall veya ilgili sanal a\u011f politikalar\u0131 \u00fczerinden kontrol edilebilir.<\/p>\n<p>Bu yakla\u015f\u0131m \u00f6zellikle \u00e7ok say\u0131da fiziksel veya sanal sunucunun bulundu\u011fu altyap\u0131larda a\u011f yap\u0131s\u0131n\u0131n daha d\u00fczenli y\u00f6netilmesine yard\u0131mc\u0131 olur.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Subnet_ile_Ilgili_Temel_Kavramlar\"><\/span><span style=\"font-weight: 400;\">Subnet ile \u0130lgili Temel Kavramlar<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Subnet konusunu \u00f6\u011frenirken a\u015fa\u011f\u0131daki a\u011f kavramlar\u0131yla s\u0131k s\u0131k kar\u015f\u0131la\u015fman\u0131z m\u00fcmk\u00fcnd\u00fcr;<\/p>\n<ul>\n<li><strong>IP adresi:<\/strong> A\u011f \u00fczerindeki bir aray\u00fcz\u00fcn IP katman\u0131ndaki adresini ifade eder.<\/li>\n<li><strong>Subnet Mask:<\/strong> IPv4 adresinin a\u011f ve host b\u00f6l\u00fcmlerinin belirlenmesine yard\u0131mc\u0131 olur.<\/li>\n<li><strong>CIDR:<\/strong> IP prefix uzunlu\u011funu <code>\/24<\/code> gibi bir g\u00f6sterimle ifade eder.<\/li>\n<li><strong>Network Adresi:<\/strong> Bir IPv4 subnet&#8217;ini tan\u0131mlayan adrestir.<\/li>\n<li><strong>Broadcast Adresi:<\/strong> Geleneksel IPv4 subnet&#8217;te t\u00fcm hostlara y\u00f6nelik broadcast ileti\u015fiminde kullan\u0131lan adrestir.<\/li>\n<li><strong>Host:<\/strong> Subnet i\u00e7erisinde IP adresi kullanan cihaz veya a\u011f aray\u00fcz\u00fcd\u00fcr.<\/li>\n<li><strong>Gateway:<\/strong> Yerel a\u011fdan di\u011fer a\u011flara g\u00f6nderilecek trafi\u011fin y\u00f6nlendirildi\u011fi a\u011f ge\u00e7ididir.<\/li>\n<li><strong>Private IP:<\/strong> Genel internette y\u00f6nlendirilmek \u00fczere ayr\u0131lmam\u0131\u015f \u00f6zel IP adres aral\u0131klar\u0131n\u0131 ifade eder.<\/li>\n<li><strong>Public IP:<\/strong> Genel internet \u00fczerinde y\u00f6nlendirilebilir IP adreslerini ifade eder.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Sikca_Sorulan_Sorular\"><\/span><span style=\"font-weight: 400;\">S\u0131k\u00e7a Sorulan Sorular<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<style>#sp-ea-1247 .spcollapsing { height: 0; overflow: hidden; transition-property: height;transition-duration: 300ms;}#sp-ea-1247.sp-easy-accordion>.sp-ea-single {margin-bottom: 10px; border: 1px solid #e2e2e2; }#sp-ea-1247.sp-easy-accordion>.sp-ea-single>.ea-header a {color: #444;}#sp-ea-1247.sp-easy-accordion>.sp-ea-single>.sp-collapse>.ea-body {background: #fff; color: #444;}#sp-ea-1247.sp-easy-accordion>.sp-ea-single {background: #eee;}#sp-ea-1247.sp-easy-accordion>.sp-ea-single>.ea-header a .ea-expand-icon { float: left; color: #444;font-size: 16px;}<\/style><div id=\"sp_easy_accordion-1788955006\"><div id=\"sp-ea-1247\" class=\"sp-ea-one sp-easy-accordion\" data-ea-active=\"ea-click\" data-ea-mode=\"vertical\" data-preloader=\"\" data-scroll-active-item=\"\" data-offset-to-scroll=\"0\"><div class=\"ea-card ea-expand sp-ea-single\"><h3 class=\"ea-header\"><span class=\"ez-toc-section\" id=\"Subnet_ve_subnet_mask_ayni_sey_mi\"><\/span><a class=\"collapsed\" id=\"ea-header-12470\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse12470\" aria-controls=\"collapse12470\" href=\"#\" aria-expanded=\"true\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-minus\"><\/i> Subnet ve subnet mask ayn\u0131 \u015fey mi?<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3><div class=\"sp-collapse spcollapse collapsed show\" id=\"collapse12470\" data-parent=\"#sp-ea-1247\" role=\"region\" aria-labelledby=\"ea-header-12470\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">Hay\u0131r. Subnet bir IP a\u011f\u0131n\u0131n mant\u0131ksal alt b\u00f6l\u00fcm\u00fcn\u00fc ifade ederken subnet mask, IPv4 adresindeki a\u011f ve host b\u00f6l\u00fcmlerini belirlemek i\u00e7in kullan\u0131lan de\u011ferdir.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><span class=\"ez-toc-section\" id=\"255255255224_hangi_subnet\"><\/span><a class=\"collapsed\" id=\"ea-header-12471\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse12471\" aria-controls=\"collapse12471\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> 255.255.255.224 hangi subnet?<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse12471\" data-parent=\"#sp-ea-1247\" role=\"region\" aria-labelledby=\"ea-header-12471\"> <div class=\"ea-body\"><p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"88\" data-end=\"322\"><code data-start=\"88\" data-end=\"105\">255.255.255.224<\/code> subnet mask de\u011feri <strong data-start=\"125\" data-end=\"137\">\/27 CIDR<\/strong> g\u00f6sterimine kar\u015f\u0131l\u0131k gelir. Bir \/27 subnet toplam 32 IPv4 adresi i\u00e7erir ve geleneksel kullan\u0131mda network ile broadcast adresleri \u00e7\u0131kar\u0131ld\u0131\u011f\u0131nda <strong data-start=\"282\" data-end=\"315\">30 kullan\u0131labilir host adresi<\/strong> kal\u0131r.<\/p><h3 data-section-id=\"11288y1\" data-start=\"324\" data-end=\"351\"><\/h3><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><span class=\"ez-toc-section\" id=\"Subnet_mask_kac_olmali\"><\/span><a class=\"collapsed\" id=\"ea-header-12472\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse12472\" aria-controls=\"collapse12472\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Subnet mask ka\u00e7 olmal\u0131?<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse12472\" data-parent=\"#sp-ea-1247\" role=\"region\" aria-labelledby=\"ea-header-12472\"> <div class=\"ea-body\"><p>Subnet mask de\u011feri, a\u011fda ihtiya\u00e7 duyulan IP adresi ve host say\u0131s\u0131na g\u00f6re belirlenmelidir. \u00d6rne\u011fin <code data-start=\"451\" data-end=\"472\">\/24 (255.255.255.0)<\/code> toplam 256 adres, <code data-start=\"491\" data-end=\"514\">\/26 (255.255.255.192)<\/code> toplam 64 adres ve <code data-start=\"534\" data-end=\"557\">\/27 (255.255.255.224)<\/code> toplam 32 adres sa\u011flar; bu nedenle t\u00fcm a\u011flar i\u00e7in ge\u00e7erli tek bir subnet mask de\u011feri yoktur.<\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><span class=\"ez-toc-section\" id=\"24_subnet_ne_anlama_gelir\"><\/span><a class=\"collapsed\" id=\"ea-header-12473\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse12473\" aria-controls=\"collapse12473\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> \/24 subnet ne anlama gelir?<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse12473\" data-parent=\"#sp-ea-1247\" role=\"region\" aria-labelledby=\"ea-header-12473\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">\/24<\/span><span style=\"font-weight: 400\">, IP adresinin ilk 24 bitinin a\u011f prefix'i olarak kullan\u0131ld\u0131\u011f\u0131n\u0131 ifade eder. IPv4'te <\/span><span style=\"font-weight: 400\">\/24<\/span><span style=\"font-weight: 400\"> i\u00e7in subnet mask <\/span><span style=\"font-weight: 400\">255.255.255.0<\/span><span style=\"font-weight: 400\"> olur ve toplam 256 adres bulunur.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><span class=\"ez-toc-section\" id=\"Bir_subnette_kac_IP_adresi_kullanilabilir\"><\/span><a class=\"collapsed\" id=\"ea-header-12474\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse12474\" aria-controls=\"collapse12474\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Bir subnet&#8217;te ka\u00e7 IP adresi kullan\u0131labilir?<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse12474\" data-parent=\"#sp-ea-1247\" role=\"region\" aria-labelledby=\"ea-header-12474\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">Bu say\u0131 kullan\u0131lan CIDR de\u011ferine g\u00f6re de\u011fi\u015fir. \u00d6rne\u011fin <\/span><span style=\"font-weight: 400\">\/24<\/span><span style=\"font-weight: 400\"> toplam 256, <\/span><span style=\"font-weight: 400\">\/26<\/span><span style=\"font-weight: 400\"> toplam 64 ve <\/span><span style=\"font-weight: 400\">\/28<\/span><span style=\"font-weight: 400\"> toplam 16 IPv4 adresi i\u00e7erir.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><span class=\"ez-toc-section\" id=\"IP_adresinden_subnet_nasil_bulunur\"><\/span><a class=\"collapsed\" id=\"ea-header-12475\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse12475\" aria-controls=\"collapse12475\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> IP adresinden subnet nas\u0131l bulunur?<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse12475\" data-parent=\"#sp-ea-1247\" role=\"region\" aria-labelledby=\"ea-header-12475\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">IP adresinin hangi subnet i\u00e7erisinde bulundu\u011funu belirlemek i\u00e7in IP adresi ile subnet mask veya CIDR prefix'i birlikte de\u011ferlendirilir. Bu bilgiler kullan\u0131larak network adresi ve ilgili adres aral\u0131\u011f\u0131 hesaplanabilir.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><span class=\"ez-toc-section\" id=\"Subnet_neden_kullanilir\"><\/span><a class=\"collapsed\" id=\"ea-header-12476\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse12476\" aria-controls=\"collapse12476\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Subnet neden kullan\u0131l\u0131r?<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse12476\" data-parent=\"#sp-ea-1247\" role=\"region\" aria-labelledby=\"ea-header-12476\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">Subnet; a\u011flar\u0131 daha k\u00fc\u00e7\u00fck b\u00f6l\u00fcmlere ay\u0131rmak, IP adreslerini planlamak, broadcast alanlar\u0131n\u0131 k\u00fc\u00e7\u00fcltmek ve farkl\u0131 cihaz veya sistem gruplar\u0131n\u0131 mant\u0131ksal olarak ay\u0131rmak i\u00e7in kullan\u0131l\u0131r.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><span class=\"ez-toc-section\" id=\"Subnet_ile_gateway_ayni_sey_mi\"><\/span><a class=\"collapsed\" id=\"ea-header-12477\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse12477\" aria-controls=\"collapse12477\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Subnet ile gateway ayn\u0131 \u015fey mi?<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse12477\" data-parent=\"#sp-ea-1247\" role=\"region\" aria-labelledby=\"ea-header-12477\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">Subnet belirli bir IP a\u011f\u0131n\u0131 veya alt a\u011f\u0131 ifade ederken gateway, cihazlar\u0131n kendi subnet'leri d\u0131\u015f\u0131ndaki a\u011flara ula\u015fmak i\u00e7in kulland\u0131klar\u0131 y\u00f6nlendirme noktas\u0131d\u0131r.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 class=\"ea-header\"><span class=\"ez-toc-section\" id=\"IPv6da_subnet_kullanilir_mi\"><\/span><a class=\"collapsed\" id=\"ea-header-12478\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse12478\" aria-controls=\"collapse12478\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> IPv6&#8217;da subnet kullan\u0131l\u0131r m\u0131?<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse12478\" data-parent=\"#sp-ea-1247\" role=\"region\" aria-labelledby=\"ea-header-12478\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">IPv6 a\u011flar\u0131nda da prefix kullan\u0131larak subnet'ler olu\u015fturulur. Ancak IPv6'n\u0131n 128 bitlik geni\u015f adres alan\u0131 nedeniyle subnet planlamas\u0131 IPv4'ten farkl\u0131 \u015fekilde ele al\u0131n\u0131r.<\/span><\/p><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Subnet (alt a\u011f), bir IP a\u011f\u0131n\u0131n daha k\u00fc\u00e7\u00fck ve y\u00f6netilebilir a\u011f b\u00f6l\u00fcmlerine ayr\u0131lmas\u0131yla olu\u015fturulan mant\u0131ksal a\u011f yap\u0131s\u0131d\u0131r. \u00d6zellikle kurumsal a\u011flar, veri merkezleri ve hosting altyap\u0131lar\u0131nda \u00e7ok say\u0131da sistemin bulundu\u011fu a\u011flar\u0131n d\u00fczenlenmesi, a\u011f trafi\u011finin kontrol edilmesi ve farkl\u0131 sistemlerin birbirinden ayr\u0131lmas\u0131 amac\u0131yla subnet kullan\u0131labilir. Subnet yap\u0131s\u0131n\u0131 anlayabilmek i\u00e7in \u00f6ncelikle IP adresi kavram\u0131n\u0131n bilinmesi gerekir. A\u011f \u00fczerindeki [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":1242,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[323],"tags":[],"class_list":["post-1241","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-network"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Subnet Nedir, Ne \u0130\u015fe Yarar? | Subnet (Alt A\u011f) Neden Kullan\u0131l\u0131r?<\/title>\n<meta name=\"description\" content=\"Subnet nedir, ne i\u015fe yarar ve nas\u0131l \u00e7al\u0131\u015f\u0131r? 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