{"id":29156,"date":"2021-02-09T11:59:58","date_gmt":"2021-02-09T08:59:58","guid":{"rendered":"https:\/\/www.turhost.com/blog\/?p=29156"},"modified":"2021-11-29T18:16:41","modified_gmt":"2021-11-29T15:16:41","slug":"whitelist-nedir","status":"publish","type":"post","link":"https:\/\/www.turhost.com/blog\/whitelist-nedir\/","title":{"rendered":"Whitelist Nedir?"},"content":{"rendered":"\n<p>\u00c7o\u011fu siber g\u00fcvenlik sorununu uzak tutabilecek \u00f6nlemlerden birini Whitelist nedir? sorusunun yan\u0131t\u0131nda bulacaks\u0131n\u0131z. Ancak tan\u0131m\u0131na ge\u00e7meden ve kullan\u0131m alanlar\u0131n\u0131 a\u00e7\u0131klamadan \u00f6nce &#8220;beyaz liste&#8221; terminolojisine dair k\u0131sa bir a\u00e7\u0131klama yapmakta fayda var.<\/p>\n\n\n\n<p>Asl\u0131nda hepimizin a\u015fina oldu\u011fu &#8220;kara liste&#8221; ve &#8220;beyaz liste&#8221; terimleri, siber g\u00fcvenlik \u00e7evrelerinde ki\u015fi veya uygulamalar\u0131n bir sistem veya a\u011fda izinli oldu\u011funu ya da reddedildi\u011fini belirtmek i\u00e7in y\u0131llard\u0131r yayg\u0131n olarak kullan\u0131lmakta.<\/p>\n\n\n\n<p>Ancak pek \u00e7ok insan beyaz liste ve siyah liste gibi terimleri, \u0131rk\u00e7\u0131l\u0131kla bilin\u00e7li olarak ili\u015fkilendirmese de son zamanlarda, bili\u015fim d\u00fcnyas\u0131nda bu t\u00fcr terimlerin kullan\u0131m\u0131na dair baz\u0131 tart\u0131\u015fmalar ba\u015flam\u0131\u015f durumda. Hatta siber g\u00fcvenlikte s\u0131k kullan\u0131lan Black Hat teriminin de\u011fi\u015ftirilmesi de bu olumsuz \u00e7a\u011fr\u0131\u015f\u0131mlar nedeniyle g\u00fcndemde.<\/p>\n\n\n\n<p>Kelimeleri g\u00fcncellemenin k\u00fclt\u00fcr\u00fc de\u011fi\u015ftirmeye yard\u0131mc\u0131 olabilece\u011fine inanlar artt\u0131k\u00e7a whitelist yerine<strong> allowlist <\/strong>ya da passlist (izin verilenler listesi) ve blacklist yerine de <strong>denylist<\/strong> (engellenenler listesi) terimlerinin kullan\u0131lmas\u0131n\u0131 savunanlar da her ge\u00e7en g\u00fcn art\u0131yor.<\/p>\n\n\n\n<h2 id=\"whitelist-beyaz-liste-nedir\" class=\"wp-block-heading\">Whitelist (Beyaz Liste) Nedir?<\/h2>\n\n\n\n<div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"632\" src=\"https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-1-2-1200x632.jpg\" alt=\"Whitelist (Beyaz Liste) Nedir?, siber g\u00fcvenlik\" class=\"wp-image-31983\" srcset=\"https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-1-2-1200x632.jpg 1200w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-1-2-650x342.jpg 650w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-1-2-768x404.jpg 768w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-1-2-380x200.jpg 380w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-1-2-800x421.jpg 800w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-1-2-1160x611.jpg 1160w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-1-2.jpg 1500w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption>YouTube&#8217;un hen\u00fcz \u00fclkemizde kullan\u0131ma sunulmasa da algoritmik \u00f6nerilerden ziyade ya\u015fa uygun videolar i\u00e7eren &#8220;YouTube \u00c7ocuk&#8221; s\u00fcr\u00fcm\u00fc beyaz liste \u00f6rne\u011fidir.<\/figcaption><\/figure><\/div>\n\n\n\n<p>Beyaz liste anlam\u0131na gelen whitelist, bir cihazda veya a\u011fda \u00e7al\u0131\u015fmas\u0131na veya g\u00f6r\u00fclmesine izin verilen ve g\u00fcvenli oldu\u011fu kabul edilen e-posta adresleri, IP adresleri veya uygulamalar gibi \u00f6\u011felerin listesidir. <\/p>\n\n\n\n<p>Kara listelerin istenmeyen \u00f6\u011feleri engelledi\u011fi d\u00fc\u015f\u00fcn\u00fcl\u00fcrse beyaz listeleri yaln\u0131zca belirli \u00f6\u011felere izin verdi\u011fi i\u00e7in VIP listelerine benzetmek yanl\u0131\u015f olmaz. YouTube&#8217;un hen\u00fcz \u00fclkemizde kullan\u0131ma sunulmasa da algoritmik \u00f6nerilerden ziyade ya\u015fa uygun videolar i\u00e7eren &#8220;YouTube \u00c7ocuk&#8221; s\u00fcr\u00fcm\u00fc beyaz liste \u00f6rne\u011fidir.<\/p>\n\n\n\n<p class=\"has-text-align-center has-white-color has-text-color has-background\" style=\"background-color:#284653\">Whitelist, yaln\u0131zca \u00f6nceden izin verilen eylemlerin ger\u00e7ekle\u015ftirilmesini sa\u011flayan bir siber g\u00fcvenlik stratejisidir. <\/p>\n\n\n\n<p>Beyaz listeler genellikle; bir bilgisayar\u0131n veya mobil cihaz\u0131n eri\u015febilece\u011fi onaylanm\u0131\u015f uygulamalar\u0131n bir listesi olarak kar\u015f\u0131m\u0131za \u00e7\u0131kar. Temelde, kullan\u0131c\u0131n\u0131n yaln\u0131zca s\u0131n\u0131rl\u0131 bir i\u015flev k\u00fcmesine eri\u015fimi vard\u0131r ve eri\u015febilecekleri, y\u00f6netici taraf\u0131ndan g\u00fcvenli kabul edilmi\u015ftir. Bu, k\u00f6t\u00fc ama\u00e7l\u0131 kodlar\u0131 tespit etmek ve engellemek i\u00e7in siber sald\u0131rganlardan bir ad\u0131m \u00f6nde olmaya \u00e7al\u0131\u015fmaktan daha pratiktir.<\/p>\n\n\n\n<p>\u00c7o\u011fu ticari i\u015fletim sistemi, Windows 10 ve macOS dahil olmak \u00fczere baz\u0131 yerle\u015fik beyaz liste i\u015flevlerine sahiptir. \u0130OS ve Android cihazlara uygulama y\u00fcklemek i\u00e7in kullan\u0131lan uygulama ma\u011fazalar\u0131 da yaln\u0131zca g\u00fcvenli oldu\u011fu onaylanm\u0131\u015f uygulamalara izin verdi\u011finden bir t\u00fcr beyaz listeye alma \u00f6rne\u011fidir. \u00c7o\u011fu mobil y\u00f6netim yaz\u0131l\u0131m\u0131, daha ayr\u0131nt\u0131l\u0131 kontrollere izin vermektedir.<\/p>\n\n\n\n<p>Ancak, daha g\u00fc\u00e7l\u00fc veya daha ayr\u0131nt\u0131l\u0131 beyaz liste yaz\u0131l\u0131m\u0131 sunan ve genellikle g\u00fcvenlik paketlerine eklenen \u00fc\u00e7\u00fcnc\u00fc taraf sat\u0131c\u0131lar da mevcuttur. B\u00fcy\u00fck \u015firketlerin daha kapsaml\u0131 beyaz liste teknolojilerine y\u00f6nelmeleri a\u00e7\u0131s\u0131ndan bu t\u00fcr yaz\u0131l\u0131mlar \u00f6nemlidir. Bu yaz\u0131l\u0131mlar a\u011f\u0131n\u0131z\u0131 tarayarak ve halihaz\u0131rda kulland\u0131\u011f\u0131n\u0131z uygulamalar\u0131 bularak listeler olu\u015fturabilir. Ayr\u0131ca, istedi\u011finiz zaman listenize web siteleri, uygulamalar veya IP&#8217;ler eklemenize olanak tan\u0131rlar. <\/p>\n\n\n\n<p>Beyaz liste, herkese i\u00e7in ideal bir g\u00fcvenlik \u00e7\u00f6z\u00fcm\u00fc olmayabilir. Merkezi olarak y\u00f6netilen \u00e7ok say\u0131da bilgisayara ba\u011fl\u0131 ana bilgisayarlar, y\u00fcksek riskli ortamlardaki bilgisayarlar ve kullan\u0131c\u0131lar\u0131n y\u00f6netici ayr\u0131cal\u0131klar\u0131na sahip olmad\u0131\u011f\u0131 diz\u00fcst\u00fc bilgisayarlar veya kiosklar i\u00e7in kullan\u0131m\u0131 uygundur.<\/p>\n\n\n\n<h2 id=\"blacklist-nedir\" class=\"wp-block-heading\">Blacklist Nedir?<\/h2>\n\n\n\n<div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"550\" src=\"https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-2-2-1200x550.jpg\" alt=\"Blacklist Nedir?, kara liste, siber g\u00fcvenlik\" class=\"wp-image-31989\" srcset=\"https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-2-2-1200x550.jpg 1200w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-2-2-650x298.jpg 650w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-2-2-768x352.jpg 768w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-2-2-380x174.jpg 380w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-2-2-800x366.jpg 800w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-2-2-1160x531.jpg 1160w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-2-2.jpg 1500w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption>S\u0131f\u0131r\u0131nc\u0131 g\u00fcn sald\u0131r\u0131lar\u0131 denen yeni olu\u015fturulmu\u015f, hen\u00fcz bilinmeyen k\u00f6t\u00fc ama\u00e7l\u0131 bir yaz\u0131l\u0131m i\u00e7in kara listelerin sizi korumas\u0131 imkans\u0131zd\u0131r.<\/figcaption><\/figure><\/div>\n\n\n\n<p>Beyaz listeye oranla daha tan\u0131d\u0131k bir kavram olan ve kara liste olarak bilinen blacklist, korumaya \u00e7al\u0131\u015ft\u0131\u011f\u0131m\u0131z cihazlarda tehlikeli \u00f6\u011felerin engellenmesini sa\u011flayan liste anlam\u0131na gelir. <\/p>\n\n\n\n<p>\u00c7o\u011fu vir\u00fcsten ve k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mdan koruma program\u0131, asl\u0131nda kara liste \u00f6rne\u011fidir. Bilinen k\u00f6t\u00fc ama\u00e7l\u0131 kodlar\u0131n bir listesini i\u00e7erirler ve bu programlar, korumal\u0131 bilgisayarlarda alg\u0131land\u0131\u011f\u0131nda otomatik olarak eyleme ge\u00e7erler. Kara listelerin, en son sald\u0131r\u0131lardan bir ad\u0131m \u00f6nde olmalar\u0131 i\u00e7in s\u00fcrekli g\u00fcncellenmeleri gerekir.<\/p>\n\n\n\n<p>S\u00fcrekli yeni tehditler ortaya \u00e7\u0131kt\u0131\u011f\u0131 i\u00e7in kara listeler asla kapsaml\u0131 olamazlar. S\u0131f\u0131r\u0131nc\u0131 g\u00fcn sald\u0131r\u0131lar\u0131 denen yeni olu\u015fturulmu\u015f, hen\u00fcz bilinmeyen k\u00f6t\u00fc ama\u00e7l\u0131 bir yaz\u0131l\u0131m i\u00e7in kara listelerin sizi korumas\u0131 imkans\u0131zd\u0131r.<\/p>\n\n\n\n<p class=\"has-background\" style=\"background-color:#d3f8cd\"><span style=\"color:#0e0953\" class=\"has-inline-color\">Ancak beyaz liste olu\u015fturmak, listenizdeki \u015feyler d\u0131\u015f\u0131nda evrendeki her \u015feyi kara listeye almak oldu\u011fundan, altyap\u0131n\u0131z i\u00e7in bir tehdit olarak ortaya \u00e7\u0131kan yeni k\u00f6t\u00fc ama\u00e7l\u0131 kodlar konusunda endi\u015felenmenize gerek yoktur \u00e7\u00fcnk\u00fc cihazlar\u0131n\u0131z\u0131n zaten g\u00fcvenli oldu\u011funu bildi\u011finiz \u00f6\u011felere eri\u015fimi s\u00f6z konusudur.<\/span><\/p>\n\n\n\n<p>Genellikle, kara liste ve beyaz listeyi birlikte kullanmak ideal se\u00e7enektir. Altyap\u0131n\u0131z\u0131n farkl\u0131 seviyelerinde farkl\u0131 yakla\u015f\u0131mlar\u0131 deneyebilir hatta ikisini de ayn\u0131 seviyede kullanabilirsiniz.<\/p>\n\n\n\n<p>\u00d6rne\u011fin, g\u00fcvenlik yaz\u0131l\u0131m\u0131 kullanarak k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131m ve talimat alg\u0131lamaya kara liste yakla\u015f\u0131m\u0131 uygulayabilirsiniz, ancak a\u011fa eri\u015fimi bir b\u00fct\u00fcn olarak kontrol etmek i\u00e7in beyaz liste yakla\u015f\u0131m\u0131 kullanabilirsiniz. \u0130stenen uygulama davran\u0131\u015f\u0131n\u0131 beyaz listeye eklerken ana bilgisayarlar\u0131 IP adreslerine g\u00f6re kara listeye alabilirsiniz.<\/p>\n\n\n\n<p>Yaln\u0131zca ger\u00e7ek kullan\u0131c\u0131lar\u0131n bulundu\u011funu bildi\u011finiz b\u00f6lgelerden kullan\u0131c\u0131lara izin vererek co\u011frafi b\u00f6lgeye dayal\u0131 bir hizmete eri\u015fimi beyaz listeye ekleyebilirsiniz. Ayn\u0131 zamanda, bu b\u00f6lgelerde bulunan k\u00f6t\u00fc niyetli kullan\u0131c\u0131lar\u0131n kara listesine de sahip olabilirsiniz. Bu, ayn\u0131 d\u00fczeyde hem beyaz listeye hem de kara listeye almaya \u00f6rnek olarak verilebilir.<\/p>\n\n\n\n<h2 id=\"greylist-nedir\" class=\"wp-block-heading\">Greylist Nedir?<\/h2>\n\n\n\n<div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"550\" src=\"https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-3-2-1200x550.jpg\" alt=\"Greylist Nedir?, gri liste, siber g\u00fcvenlik\" class=\"wp-image-31994\" srcset=\"https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-3-2-1200x550.jpg 1200w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-3-2-650x298.jpg 650w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-3-2-768x352.jpg 768w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-3-2-380x174.jpg 380w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-3-2-800x366.jpg 800w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-3-2-1160x531.jpg 1160w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-3-2.jpg 1500w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption>\u0130deal olarak \u00f6\u011feler gri listede uzun s\u00fcre kalmaz, h\u0131zl\u0131 bir \u015fekilde kara listeye veya beyaz listeye ge\u00e7irilir.<\/figcaption><\/figure><\/div>\n\n\n\n<p>Gri liste (Greylist), hen\u00fcz iyi huylu veya k\u00f6t\u00fc niyetli oldu\u011funu onaylamad\u0131\u011f\u0131n\u0131z \u00f6\u011feleri koyabilece\u011finiz listedir. Gri listedeki \u00f6\u011felerin sisteminize eri\u015fimi ge\u00e7ici olarak engellenmi\u015ftir. <\/p>\n\n\n\n<p>Gri liste, kara listeye alma ile beyaz listeye alma y\u00f6ntemlerinden en az biriyle birlikte kullan\u0131l\u0131r. \u0130deal olarak \u00f6\u011feler gri listede uzun s\u00fcre kalmaz, h\u0131zl\u0131 bir \u015fekilde kara listeye veya beyaz listeye ge\u00e7irilir.<\/p>\n\n\n\n<p>Gri listele kullan\u0131m\u0131na \u00f6rnek olarak e-postalar verilebilir: \u0130stenmeyen e-posta filtresi bir mesaj\u0131 kabul edip etmeyece\u011finden emin de\u011filse, onu ge\u00e7ici olarak engelleyebilir. G\u00f6nderen, belirli bir s\u00fcre i\u00e7inde mesaj\u0131 tekrar g\u00f6ndermeye \u00e7al\u0131\u015f\u0131rsa, mesaj iletilecektir. Aksi takdirde, mesaj\u0131 reddedecektir. Bunun arkas\u0131ndaki d\u00fc\u015f\u00fcnce, \u00e7o\u011fu spam&#8217;\u0131n ger\u00e7ek kullan\u0131c\u0131lar de\u011fil, spam g\u00f6ndermek i\u00e7in tasarlanm\u0131\u015f uygulamalardan geldi\u011fidir.<\/p>\n\n\n\n<h2 id=\"beyaz-listenin-dezavantajlari\" class=\"wp-block-heading\">Beyaz Listenin Dezavantajlar\u0131<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Beyaz listeler kullan\u0131c\u0131lar\u0131n cihazlar\u0131n\u0131 istedikleri \u015fekilde kullanma \u00f6zg\u00fcrl\u00fc\u011f\u00fcn\u00fc k\u0131s\u0131tlar. Bu genellikle \u00e7al\u0131\u015fanlar\u0131n her g\u00fcn sekiz saat  boyunca kulland\u0131klar\u0131 bilgisayarlarda y\u00f6neticilerin izin vermedi\u011fi uygulamalar i\u00e7in ge\u00e7erlidir.  <br><br><\/li><li>Beyaz listeye alman\u0131n istedi\u011finiz trafi\u011fi engelleme olas\u0131l\u0131\u011f\u0131 da vard\u0131r.<br><\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>Beyaz liste kara listeden daha y\u00fcksek g\u00fcvenlik sunsa da uygulanmas\u0131 daha karma\u015f\u0131k olabilir. Beyaz liste olu\u015fturmay\u0131 \u00fc\u00e7\u00fcnc\u00fc bir tarafa devretmek zordur \u00e7\u00fcnk\u00fc kulland\u0131\u011f\u0131n\u0131z uygulamalarla ilgili bilgilere ihtiya\u00e7 duyarlar. \u00c7o\u011fu kurulu\u015f, kulland\u0131\u011f\u0131 ara\u00e7lar\u0131 d\u00fczenli olarak de\u011fi\u015ftirir. Bu, yeni bir uygulamay\u0131 her y\u00fcklediklerinde veya mevcut bir yama uyguland\u0131\u011f\u0131nda beyaz listelerini g\u00fcncellemeleri gerekti\u011fi anlam\u0131na gelir.<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>Beyaz listeleri olu\u015fturmak i\u00e7in yap\u0131lmas\u0131 gereken olduk\u00e7a fazla i\u015f y\u00fck\u00fc s\u00f6z konusudur. Genellikle bilinen k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131m ve sald\u0131r\u0131 sitelerinin yer ald\u0131\u011f\u0131 kara listeler yayg\u0131n kullan\u0131m i\u00e7in bir araya getirilmi\u015ftir. Ancak her i\u015fletmenin kullanmas\u0131 gereken programlar\u0131n beyaz listesi benzersizdir. <\/li><\/ul>\n\n\n\n<h2 id=\"beyaz-liste-hangi-tehditlerle-mucadele-eder\" class=\"wp-block-heading\">Beyaz Liste Hangi Tehditlerle M\u00fccadele Eder?<\/h2>\n\n\n\n<p>Listede olmayanlar\u0131n a\u011f\u0131n\u0131za veya cihaz\u0131n\u0131za girmesine izin vermeyen beyaz listeler, sistemleri k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlardan ve<a href=\"https:\/\/www.turhost.com\/blog\/ransomware-nedir\/\"> ransomware<\/a> denen fidye yaz\u0131l\u0131mlar\u0131ndan korur. Bu nedenle hem i\u015fletmeler hem de bireyler taraf\u0131ndan geni\u015f \u00e7apta benimsenmi\u015ftir.<\/p>\n\n\n\n<p>Uygulamalar\u0131n beyaz listeye al\u0131nmas\u0131, iki farkl\u0131 g\u00fcvenlik tehdidine kar\u015f\u0131 etkilidir. Bunlardan biri k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlard\u0131r: Tu\u015f kaydediciler veya fidye yaz\u0131l\u0131m\u0131 gibi k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131m y\u00fckleri, beyaz listede olmad\u0131klar\u0131nda y\u00fcr\u00fct\u00fclemez. Di\u011feri ise bilgisayarlar\u0131na g\u00fcvenli olmayan veya uygun \u015fekilde lisanslanmam\u0131\u015f programlar\u0131 y\u00fcklemeyi deneyen kullan\u0131c\u0131lar\u0131n tespitini sa\u011flamas\u0131d\u0131r.<\/p>\n\n\n\n<p>E-posta adreslerinin beyaz listeye eklenmesiyle kimlik av\u0131 e-postalar\u0131 engellenir ve belirli al\u0131c\u0131lardan gelen e-postalar\u0131n spam klas\u00f6r\u00fcne d\u00fc\u015fmemesi sa\u011flan\u0131r.<\/p>\n\n\n\n<p>\u00d6zel sunuculara sadece belirli IP adreslerinin eri\u015fmesini sa\u011flayan beyaz listeler ise bilgisayar korsanlar\u0131 ve yetkisiz eri\u015fim sa\u011flamaya \u00e7al\u0131\u015fan k\u00f6t\u00fc niyetli ki\u015filerle m\u00fccadele edebilir.<\/p>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background\" style=\"background-color:#f6e9ec;color:#a30054\">Yaln\u0131zca g\u00fcvenli oldu\u011fu kan\u0131tlanm\u0131\u015f \u00f6\u011felere izin vermek anlam\u0131na gelen whitelist, kara listeye alma yakla\u015f\u0131mlar\u0131ndan \u00e7ok daha kat\u0131d\u0131r.<\/p>\n\n\n\n<p>Beyaz liste, k\u00f6t\u00fc niyetli birinin sisteminize eri\u015fme ihtimalini d\u00fc\u015f\u00fcr\u00fcr. Bilgisayar korsanlar\u0131 genellikle sunuculara &#8220;kaba kuvvet sald\u0131r\u0131lar\u0131&#8221; ile eri\u015fim sa\u011flamaya \u00e7al\u0131\u015f\u0131rlar. Bu bir dakika i\u00e7inde milyonlarca \u015fifre kombinasyonu aras\u0131nda ge\u00e7i\u015f yapan bir algoritmaya sahip olduklar\u0131 ve do\u011fru kombinasyona ula\u015fana kadar devam edecekleri anlam\u0131na gelir. Eri\u015fim sa\u011flad\u0131klar\u0131nda web sitenize ve e-postalar\u0131n\u0131za ula\u015fabilir e-posta adresinizden doland\u0131r\u0131c\u0131l\u0131k e-postalar\u0131 yay\u0131nlamak i\u00e7in spam botlar\u0131 kurabilirler. <\/p>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background\" style=\"background-color:#f5f7f8;color:#0a2543\">Bu konudaki ilgin\u00e7 detaylar i\u00e7in <a rel=\"noreferrer noopener\" href=\"https:\/\/www.turhost.com/blog\/botnet-nedir-botnet-saldirisi-nasil-yapilir\/\" target=\"_blank\">Botnet Nedir? Botnet Sald\u0131r\u0131s\u0131 Nas\u0131l Yap\u0131l\u0131r?<\/a> ve <a rel=\"noreferrer noopener\" href=\"https:\/\/www.turhost.com/blog\/brute-force-nedir\/\" target=\"_blank\">Brute Force (Kaba Kuvvet Sald\u0131r\u0131s\u0131) Nedir?<\/a> adl\u0131 yaz\u0131lar\u0131m\u0131za g\u00f6z atman\u0131z\u0131 \u00f6neririz.<\/p>\n\n\n\n<h2 id=\"whitelist-kullanim-alanlari\" class=\"wp-block-heading\">Whitelist Kullan\u0131m Alanlar\u0131<\/h2>\n\n\n\n<div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"550\" src=\"https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-4-1-1200x550.jpg\" alt=\"Beyaz liste kullan\u0131m alanlar\u0131, whitelist kullan\u0131m alanlar\u0131, siber g\u00fcvenlik\" class=\"wp-image-32000\" srcset=\"https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-4-1-1200x550.jpg 1200w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-4-1-650x298.jpg 650w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-4-1-768x352.jpg 768w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-4-1-380x174.jpg 380w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-4-1-800x366.jpg 800w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-4-1-1160x531.jpg 1160w, https:\/\/www.turhost.com/blog\/wp-content\/uploads\/2021\/01\/yazi-ici-gorsel-4-1.jpg 1500w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption>Beyaz listelerin g\u00fcncel tutulmas\u0131 titizlikle takip edilmelidir.<\/figcaption><\/figure><\/div>\n\n\n\n<p>Beyaz listeyi yaln\u0131zca belirli bir kullan\u0131c\u0131 grubunun bir sistemi kullanmas\u0131 gerekti\u011finde ya da daha kontroll\u00fc bir ortam istedi\u011finizde kullanman\u0131z \u00f6nerilir.<\/p>\n\n\n\n<p>A\u011f d\u00fczeyinde bir beyaz liste olu\u015fturmak i\u00e7in, kullan\u0131c\u0131lar\u0131n ger\u00e7ekle\u015ftirmesi gereken t\u00fcm g\u00f6revleri ve bunlar\u0131 tamamlamak i\u00e7in ihtiya\u00e7 duyacaklar\u0131 ara\u00e7lar\u0131 g\u00f6z \u00f6n\u00fcnde bulundurman\u0131z gerekir. <\/p>\n\n\n\n<p>A\u011f d\u00fczeyinde beyaz liste, a\u011f altyap\u0131s\u0131, siteler, konumlar, uygulamalar, kullan\u0131c\u0131lar, hizmetler ve ba\u011flant\u0131 noktalar\u0131, yaz\u0131l\u0131m kitapl\u0131klar\u0131, eklentiler, uzant\u0131lar ve yap\u0131land\u0131rma dosyalar\u0131 gibi detaylarla dolu olabilir. <\/p>\n\n\n\n<p>Kullan\u0131c\u0131 d\u00fczeyindeki beyaz listeler ise e-posta adreslerini, dosyalar\u0131 ve programlar\u0131 i\u00e7erebilir. <\/p>\n\n\n\n<p>Beyaz liste, herkese i\u00e7in ideal bir g\u00fcvenlik \u00e7\u00f6z\u00fcm\u00fc olmayabilir. Merkezi olarak y\u00f6netilen \u00e7ok say\u0131da bilgisayara ba\u011fl\u0131 ana bilgisayarlar, y\u00fcksek riskli ortamlardaki bilgisayarlar ve kullan\u0131c\u0131lar\u0131n y\u00f6netici ayr\u0131cal\u0131klar\u0131na sahip olmad\u0131\u011f\u0131 diz\u00fcst\u00fc bilgisayarlar veya kiosklar i\u00e7in kullan\u0131\u015fl\u0131d\u0131r.<\/p>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background\" style=\"background-color:#f5ffc5;color:#11810f\">G\u00fcvenlik yaz\u0131l\u0131m\u0131 kullanarak k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131mlara kara liste yakla\u015f\u0131mlar\u0131n\u0131n uygulanmas\u0131 ve a\u011fa eri\u015fimi kontrol etmek i\u00e7in beyaz listelerin kullan\u0131lmas\u0131 \u00f6nerilir.<\/p>\n\n\n\n<p>\u015eimdi beyaz listenin yayg\u0131n olarak kullan\u0131ld\u0131\u011f\u0131 alanlara g\u00f6z atal\u0131m:<\/p>\n\n\n\n<h3 id=\"e-posta\" class=\"wp-block-heading\">E-Posta <\/h3>\n\n\n\n<p>G\u00fcvenli bir &#8220;g\u00f6nderenler listesi&#8221; olu\u015fturarak bilinmeyen e-postalar\u0131, spam ve kimlik av\u0131 giri\u015fimlerini engellemek i\u00e7in whitelist kullan\u0131m\u0131 yayg\u0131nd\u0131r. Bu, se\u00e7ti\u011finiz ki\u015filerden gelen e-postalar\u0131n spam klas\u00f6r\u00fcne gitmesini engeller.<\/p>\n\n\n\n<p>E-posta adreslerinin beyaz listeye al\u0131nmas\u0131 \u00fcretkenli\u011finizi art\u0131rabilir; hi\u00e7 kimse, ka\u00e7\u0131rm\u0131\u015f olabilece\u011fi \u00f6nemli bir s\u00f6zle\u015fmeyi aramak i\u00e7in spam klas\u00f6r\u00fcnde gezinmekten ho\u015flanmaz. <\/p>\n\n\n\n<p>E-posta beyaz listeleri sayesinde listeye eklenmedik\u00e7e birinin size ula\u015fmas\u0131 imkans\u0131zd\u0131r bu da kimlik av\u0131 sald\u0131r\u0131lar\u0131n\u0131n \u00f6nlenmesinde etkili bir yoldur.<\/p>\n\n\n\n<h3 id=\"ip-adresleri\" class=\"wp-block-heading\">IP Adresleri<\/h3>\n\n\n\n<p>\u0130nternet protokol\u00fc adresi anlam\u0131na gelen IP adresi, internete eri\u015fmek i\u00e7in kullan\u0131lan cihaza ve a\u011fa g\u00f6re kullan\u0131c\u0131lara verilen benzersiz bir tan\u0131mlay\u0131c\u0131d\u0131r. Bir bilgisayar veya mobil cihaz, bir sunucuya her istek g\u00f6nderdi\u011finde, IP adresini de g\u00f6nderir, b\u00f6ylece sunucu, iste\u011fi kimin yapt\u0131\u011f\u0131n\u0131 ve bilgileri kime geri g\u00f6ndermesi gerekti\u011fini belirleyebilir. Bunu eski mektupla\u015fma sisteminde zarf\u0131n sol \u00fcst k\u00f6\u015fesine g\u00f6nderen ki\u015finin adresini yazmas\u0131na benzetebiliriz.<\/p>\n\n\n\n<p>IP beyaz listeleri, g\u00fcvenlik ve gizlili\u011fe ihtiya\u00e7 duyan \u015firketler i\u00e7in kullan\u0131\u015fl\u0131d\u0131r. Site y\u00f6neticileri, \u015firketlerinin sunucular\u0131n\u0131 yaln\u0131zca belirli IP&#8217;lerin eri\u015fece\u011fi \u015fekilde ayarlayabilir. Ancak, beyaz listenin \u00e7al\u0131\u015fmas\u0131 i\u00e7in IP&#8217;lerin statik olmas\u0131 gerekir. <a href=\"https:\/\/www.turhost.com/blog\/statik-ip-nedir-hangi-amaclarla-kullanilir\/\" target=\"_blank\" rel=\"noreferrer noopener\">Statik IP Nedir?<\/a> adl\u0131 yaz\u0131m\u0131zdan art\u0131lar\u0131n\u0131 ve eksilerini \u00f6\u011frenebilirsiniz.<\/p>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background\" style=\"background-color:#fff8fa;color:#a30089\">Beyaz listeye alma, herkese a\u00e7\u0131k olmayan sistemlerde kullan\u0131\u015fl\u0131d\u0131r. \u00d6rne\u011fin, yaln\u0131zca \u015firketinizin belirli \u00e7al\u0131\u015fanlar\u0131n\u0131n eri\u015fmesi gereken bir uygulaman\u0131z varsa, bilgisayarlar\u0131n\u0131n IP adreslerini beyaz listeye ekleyebilir ve di\u011fer t\u00fcm IP adreslerinin uygulamaya eri\u015fimini engelleyebilirsiniz.<\/p>\n\n\n\n<p>Beyaz liste, di\u011fer kullan\u0131c\u0131lar\u0131n ba\u011flanmas\u0131n\u0131 durdururken <strong>\/whitelist on<\/strong> ve <strong>\/whitelist remove<\/strong> gibi komutlarla belirli kullan\u0131c\u0131lar\u0131n sunucunuza eri\u015fmesine olanak tan\u0131r. <\/p>\n\n\n\n<h3 id=\"ip-adreslerini-beyaz-listeye-almanin-dezavantajlari\" class=\"wp-block-heading\">IP Adreslerini Beyaz Listeye Alman\u0131n Dezavantajlar\u0131<\/h3>\n\n\n\n<p>IP adresleri i\u00e7in kullan\u0131lan beyaz listeye alma i\u015flemleri, belirli IP adreslerine a\u011f eri\u015fimi sa\u011flamak i\u00e7in kullan\u0131l\u0131r. Bir g\u00fcvenlik \u00f6nlemi olarak uygulansa da baz\u0131 dezavantajlar\u0131 s\u00f6z konusudur:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>IP adresleri s\u0131k s\u0131k de\u011fi\u015febilir ve VPN kullan\u0131l\u0131yorsa sahte olabilirler. Bu da a\u011f\u0131n\u0131z\u0131n g\u00fcvenli\u011fini riske atabilir.<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>Sunucuya her istek geldi\u011finde, beyaz listeye ve kara listeye al\u0131nan IP adreslerinin listesini kontrol etmesi gerekir. Birisi e-posta g\u00f6nderip almak, bir web sayfas\u0131n\u0131 g\u00f6r\u00fcnt\u00fclemek veya bu web sayfalar\u0131ndaki bir \u015feyi t\u0131klamak istedi\u011finde, sunucunun bu listeleri g\u00f6zden ge\u00e7irmesi gerekir. Bu listeler ne kadar uzun olursa, sunucunun her iste\u011fi i\u015flemesi o kadar uzun s\u00fcrer.<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>Bir IP adresini beyaz listeye eklemek, hem kullan\u0131c\u0131n\u0131n g\u00fcvenli\u011fini hem de onu kullanan di\u011fer herkes i\u00e7in sunucunun g\u00fcvenilirli\u011fini tehlikeye atabilir. Bir\u00e7ok bilgisayar korsan\u0131, bir hesaba eri\u015fim sa\u011flad\u0131ktan sonra, spam g\u00f6ndermek i\u00e7in o hesab\u0131n e-postas\u0131n\u0131 kullan\u0131r. Bu i\u015flemin ger\u00e7ekle\u015fti\u011fi sunucu k\u00f6t\u00fc bir itibar kazanm\u0131\u015f olur ve e-postalar\u0131n\u0131 bu sunucuda bar\u0131nd\u0131ran herkesin e-postalar\u0131 otomatik olarak spam olarak etiketlenebilir. Bu nedenle bir IP adresini kal\u0131c\u0131 olarak beyaz listeye eklemek sunucudaki herkesin g\u00fcvenli\u011fini tehlikeye atabilir.<\/li><\/ul>\n\n\n\n<h3 id=\"uygulamalar\" class=\"wp-block-heading\">Uygulamalar<\/h3>\n\n\n\n<p>Uygulama beyaz listeleri yaln\u0131zca onayl\u0131 uygulamalar\u0131n \u00e7al\u0131\u015fmas\u0131na izin verir. Uygulamalar\u0131 veya y\u00fcr\u00fct\u00fclebilir dosyalar\u0131 bir beyaz listeye koyarak, cihaz\u0131n\u0131za yaln\u0131zca bu uygulamalar\u0131 \u00e7al\u0131\u015ft\u0131rmas\u0131 ve di\u011ferlerini k\u00f6t\u00fc niyetli olarak kabul etmesi talimat\u0131n\u0131 vermi\u015f olursunuz.<\/p>\n\n\n\n<p>Ayr\u0131ca uygulaman\u0131n davran\u0131\u015f\u0131n\u0131, ne yapmas\u0131 &#8220;gerekti\u011fini&#8221; beyaz listeye ekleyebilir ve izin verilmeyen herhangi bir etkinli\u011fini engelleyebilirsiniz. Beyaz listeye alma bu nedenle cihaz\u0131n\u0131za vir\u00fcs bula\u015ft\u0131\u011f\u0131nda ya da birisi yaz\u0131l\u0131m\u0131n\u0131z\u0131 ele ge\u00e7irmeye \u00e7al\u0131\u015ft\u0131\u011f\u0131nda uygulaman\u0131n \u00e7al\u0131\u015fmas\u0131n\u0131 durdurur.<\/p>\n\n\n\n<p>Bir cihazda yaln\u0131zca g\u00fcvenilen uygulamalar\u0131n beyaz listeye eklemesi, genellikle bir i\u015fletim sistemine eklenmesi anlam\u0131na gelir. Bu, a\u011f\u0131 g\u00fcvende tutmak ve \u00e7al\u0131\u015fanlar\u0131n \u00fcretkenli\u011fini engelleyebilecek uygulamalar\u0131n indirilmesini \u00f6nlemek i\u00e7in genellikle i\u015fletmelerde y\u00f6neticiler taraf\u0131ndan \u00e7al\u0131\u015fanlar\u0131n bilgisayarlar\u0131nda kullan\u0131l\u0131r. Beyaz liste yakla\u015f\u0131m\u0131n\u0131 kullanmak, kullan\u0131c\u0131 etkinliklerinin yan\u0131 s\u0131ra kullan\u0131c\u0131 ayr\u0131cal\u0131klar\u0131n\u0131 da dikkate almay\u0131 gerektirir.<\/p>\n\n\n\n<p>Uygulamalar\u0131n beyaz listeye eklenmesi, bir sald\u0131rgan\u0131n beyaz listedeki uygulamalardan birini ayn\u0131 \u00f6zelliklere sahip k\u00f6t\u00fc niyetli bir uygulama ile de\u011fi\u015ftirmesi riskini de ortaya \u00e7\u0131kar\u0131r. Bu nedenle kriptografik hash (uygulaman\u0131n \u00fcreticisinin veya geli\u015ftiricisinin dijital imzalar\u0131n\u0131n kullan\u0131lmas\u0131) gibi ek g\u00fcvenlik \u00f6nlemleri al\u0131nmas\u0131 \u00f6nerilir. <\/p>\n\n\n\n<h2 id=\"beyaz-listeye-ekleme-konusunda-uyarilar\" class=\"wp-block-heading\">Beyaz Listeye Ekleme Konusunda Uyar\u0131lar<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Bir \u015feylerin ters gitme ihtimaline kar\u015f\u0131l\u0131k kurumsal operasyonlar\u0131n kesintiye u\u011framamas\u0131 i\u00e7in i\u015fletmelerin beyaz listeyi a\u015famal\u0131 olarak ba\u015flatmas\u0131 tavsiye edilir.<br><\/li><li>Beyaz listelerin g\u00fcncel tutulmas\u0131 titizlikle takip edilmelidir.<br><\/li><li>Beyaz listenizin ger\u00e7ekten do\u011fru \u00f6\u011feleri i\u00e7erdi\u011finden emin olmak i\u00e7in zaman ay\u0131rman\u0131z \u00f6nemlidir. Bunu, i\u015fletmenizin BT altyap\u0131s\u0131nda hangi uygulamalar\u0131n kurulu oldu\u011funu ve hangilerine ger\u00e7ekten ihtiya\u00e7 duyuldu\u011funu denetlemek i\u00e7in bir f\u0131rsat olarak da d\u00fc\u015f\u00fcnebilirsiniz. Unutmaman\u0131z gereken \u015fey; beyaz liste yaz\u0131l\u0131mlar\u0131 ya da programlar\u0131n\u0131n yaln\u0131zca listenin kendisi kadar iyi olabilece\u011fidir.<br><\/li><\/ul>\n\n\n\n<h2 id=\"ozet\" class=\"wp-block-heading\">\u00d6zet<\/h2>\n\n\n\n<p>Beyaz listeye alma, \u00f6zellikle y\u00fcksek g\u00fcvenlik standartlar\u0131na ihtiya\u00e7 duyan veya a\u011flar\u0131na kendi cihazlar\u0131 ile ba\u011flanan \u00e7al\u0131\u015fanlar\u0131 olan b\u00fcy\u00fck \u015firketler ve KOB\u0130&#8217;ler i\u00e7in tavsiye edilir. Ancak, di\u011fer siber g\u00fcvenlik \u00f6nlemlerinin yerini almamal\u0131 ve antivir\u00fcs yaz\u0131l\u0131mlar\u0131 ile de desteklenmelidir.<\/p>\n\n\n\n<p>\u00d6zetle Whitelist nedir? sorusunu &#8220;KOB\u0130&#8217;ler, b\u00fcy\u00fck \u015firketler ve savunmalar\u0131n\u0131 g\u00fc\u00e7lendirmek isteyen ki\u015filer i\u00e7in bir t\u00fcr siber g\u00fcvenlik stratejisi&#8221; \u015feklinde yan\u0131tlayabiliriz.<\/p>\n","protected":false},"excerpt":{"rendered":"Yaln\u0131zca g\u00fcvenli oldu\u011fu kan\u0131tlanm\u0131\u015f \u00f6\u011felere izin vermek anlam\u0131na gelen whitelist, kara listeye alma yakla\u015f\u0131mlar\u0131ndan \u00e7ok daha kat\u0131d\u0131r. K\u00f6t\u00fc niyetli birinin sisteminize eri\u015fme riskini ciddi oranda azalt\u0131r.\n","protected":false},"author":1,"featured_media":31982,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_relevanssi_hide_post":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"44596,42311,43938,4269,2617,5095","_relevanssi_noindex_reason":"","footnotes":""},"categories":[656,654,657,655,138],"tags":[],"class_list":{"0":"post-29156","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-alpha-ssl","8":"category-comodo-ssl","9":"category-ev-ssl","10":"category-globalsign-ssl","11":"category-ipuclari"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Whitelist Nedir? 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