{"id":2868,"date":"2020-11-27T06:00:35","date_gmt":"2020-11-27T06:00:35","guid":{"rendered":"https:\/\/blog.sh.com.tr\/?p=2868"},"modified":"2021-02-19T09:40:05","modified_gmt":"2021-02-19T09:40:05","slug":"firewall-guvenlik-duvari-nedir","status":"publish","type":"post","link":"https:\/\/sh.com.tr\/blog\/firewall-guvenlik-duvari-nedir\/","title":{"rendered":"Firewall G\u00fcvenlik Duvar\u0131 Nedir?"},"content":{"rendered":"<p><strong><b>Firewall G\u00fcvenlik Duvar\u0131 Nedir?<\/b><\/strong><\/p>\n<p><u>Firewall kelimesinin tan\u0131m\u0131<\/u>, site i\u00e7i g\u00fcvenli\u011fi sa\u011flayan yaz\u0131l\u0131m \u015feklinde yap\u0131l\u0131r. Site i\u00e7indeki hareketlerden riskli olanlar\u0131 belirleyerek engeller, spam trafi\u011fi \u00f6nler. <strong><b>Firewall <\/b><\/strong>kullan\u0131m\u0131, tehdit olarak alg\u0131lanacak dosya, yorum, site hareketi ve kullan\u0131c\u0131lar\u0131 siteden uzakla\u015ft\u0131r\u0131r. Bu sayede sitenize daha fazla do\u011fal trafik ve daha kaliteli ziyaret\u00e7i giri\u015fi yap\u0131lmas\u0131na yard\u0131mc\u0131 olur. Firewall kurallar\u0131n\u0131 kendiniz belirleyebilir, baz\u0131 riskli hareketlere kendiniz izin verebilirsiniz. G\u00fcvenlik duvar\u0131, sizin kurallar\u0131n\u0131z \u00e7er\u00e7evesinde yeniden \u015fekillenecektir.<\/p>\n<p><strong><b>Firewall \u00c7al\u0131\u015fma Sistemi <\/b><\/strong><\/p>\n<p><strong><b>Firewall \u00e7al\u0131\u015fmas\u0131<\/b><\/strong>, siteye giri\u015flerde ve sitede yap\u0131lan i\u015flemlerde bir turnike g\u00f6revi g\u00f6r\u00fcr. G\u00fcvenlik duvar\u0131n\u0131 kullanmak isteyen site sahiplerinin, \u00f6ncelikle Firewall \u00e7al\u0131\u015fma \u00e7er\u00e7evesini belirlemesi gerekir. Sitenizde argo kelimelerin spamlanmas\u0131, gereksiz trafi\u011fe yol a\u00e7an bot hesaplar\u0131n engellenmesi gibi i\u015flemlerin \u00e7er\u00e7evesini sizin se\u00e7meniz gerekir. Ayn\u0131 \u015fekilde baz\u0131 hesaplar\u0131n siteye ge\u00e7i\u015fine \u00f6ncelik de verebilir, daha iyi oldu\u011funu d\u00fc\u015f\u00fcnd\u00fc\u011f\u00fcn\u00fcz ziyaret\u00e7i kitlesini se\u00e7erek Firewall g\u00fcvenlik duvar\u0131n\u0131n bu ziyaret\u00e7ilere sorunsuz a\u00e7\u0131lmas\u0131n\u0131 sa\u011flayabilirsiniz.<\/p>\n<p>Baz\u0131 Firewall uygulamalar\u0131, Proxy ile ortak \u00e7al\u0131\u015f\u0131r. Bu durumda bir ziyaret\u00e7i g\u00fcvenlik duvar\u0131ndan ge\u00e7mi\u015f olsa bile, Proxy ile kar\u015f\u0131la\u015f\u0131r. \u00c7ift koruma sa\u011flayan bu uygulama, vir\u00fcs, k\u00f6t\u00fc niyetli yaz\u0131l\u0131m, bot hesap ve trojanlar\u0131n sitenize ula\u015fmas\u0131n\u0131 engeller.<\/p>\n<p><strong><b>Donan\u0131m Tabanl\u0131 Firewall Nedir?<\/b><\/strong><\/p>\n<p><u>Donan\u0131msal g\u00fcvenlik duvar\u0131 <\/u>cihaz\u0131n\u0131zdan ayr\u0131 \u015fekilde kurdu\u011funuz mekanik bir d\u00fczenektir. Donan\u0131msal Firewall duvar\u0131n \u00f6zellikleri \u015fu \u015fekilde s\u0131ralanabilir:<\/p>\n<ul>\n<li>Yaz\u0131l\u0131msal olmamas\u0131 sebebiyle cihaz\u0131n \u00e7al\u0131\u015fma sistemini de\u011fi\u015ftirmez.<\/li>\n<li>Ayr\u0131 bir alanda olmas\u0131ndan dolay\u0131, cihaz enerjisini t\u00fcketmez.<\/li>\n<li>Yaz\u0131l\u0131msal i\u015flemlerin aksine kolayca devreden \u00e7\u0131kar\u0131lamaz.<\/li>\n<li>\u0130nternet a\u011f\u0131n\u0131, etkile\u015fim isteklerini, yap\u0131lan i\u015flemlerin t\u00fcm\u00fcn\u00fc denetler.<\/li>\n<li>Paket filtreleme mant\u0131\u011f\u0131yla \u00e7al\u0131\u015f\u0131r.<\/li>\n<li>Bu t\u00fcr koruma duvar\u0131, uzmanl\u0131k gerektiren karma\u015f\u0131k bir sisteme sahiptir. %100\u2019e yak\u0131n koruma sa\u011flar ancak kullan\u0131m\u0131 ustal\u0131k gerektirir.<\/li>\n<li>Koruma d\u00fczeyinin fazla olmas\u0131, gerekli maliyeti de y\u00fckseltir. Kurulumu daha y\u00fcksek bir \u00fccrete tabidir.<\/li>\n<\/ul>\n<p><strong><b>Yaz\u0131l\u0131m Tabanl\u0131 Firewall Nedir?<\/b><\/strong><\/p>\n<p><strong><b>Yaz\u0131l\u0131msal g\u00fcvenlik duvar\u0131<\/b><\/strong>, sistem \u00fczerine kurulan bir programd\u0131r. Ekstra donan\u0131m gerektirmez ve cihaz\u0131n i\u00e7erisinde \u00e7al\u0131\u015fmas\u0131na devam eder. Yaz\u0131l\u0131msal <strong><b>Firewall<\/b><\/strong>\u00a0uygulamalar\u0131n\u0131n \u00f6zellikleri \u015fu \u015fekildedir:<\/p>\n<ul>\n<li>Ekstra donan\u0131m faaliyeti gerektirmez. Bu nedenle kullan\u0131m\u0131 basittir. Uzmanl\u0131k gerektirmez.<\/li>\n<li>Bu tip g\u00fcvenlik duvarlar\u0131n\u0131n aray\u00fcz\u00fc basittir. Komutlar, birka\u00e7 tu\u015fa bas\u0131larak kolay bir \u015fekilde verilir.<\/li>\n<li>Sadece gelen trafik i\u00e7in de\u011fil, giden trafik i\u00e7in de komut olu\u015fturulmas\u0131n\u0131 m\u00fcmk\u00fcn k\u0131lar.<\/li>\n<li>Bu t\u00fcr uygulamalar, s\u00fcrekli arka planda \u00e7al\u0131\u015fmaya devam eder. Bu nedenle g\u00fcvenli\u011fi sa\u011fl\u0131yor olsa da, cihaz\u0131n kendi kaynaklar\u0131n\u0131 t\u00fcketir.<\/li>\n<li>Sistem kullan\u0131c\u0131lar\u0131 taraf\u0131ndan devre d\u0131\u015f\u0131 b\u0131rak\u0131lmalar\u0131 m\u00fcmk\u00fcnd\u00fcr. Bu nedenle ger\u00e7ek anlamda g\u00fcvenlik sa\u011flamayabilirler.<\/li>\n<\/ul>\n<p><strong><b>Mimariye G\u00f6re G\u00fcvenlik Duvar\u0131 \u00c7e\u015fitleri<\/b><\/strong><\/p>\n<p><u>G\u00fcvenlik duvar\u0131n\u0131n g\u00fcvenli\u011fi sa\u011flama \u015fekline g\u00f6re t\u00fcrleri<\/u>\u00a0\u015fu \u015fekilde s\u0131ralanabilir:<\/p>\n<ul>\n<li>Statik paket filtre Firewall: A\u011fa gelen trafik i\u00e7erisinde bulunan \u00a0temel bilgilerle ilgilenir. Belirleme alan\u0131, kayna\u011f\u0131n kimli\u011fi, ula\u015fmak istedi\u011fi kaynak, kullanaca\u011f\u0131 protokol t\u00fcr\u00fc \u00a0ile s\u0131n\u0131rl\u0131d\u0131r. A\u011fda indirilecek dosyan\u0131n i\u00e7eri\u011fi ile ilgilenmeyen bu t\u00fcr, tam koruma sa\u011flamaz.<\/li>\n<li>Devre seviyesi Firewall: Bu g\u00fcvenlik duvar\u0131, IP adresinin sorgulanmas\u0131n\u0131 temel al\u0131r. yani trafi\u011fe girmek isteyen kullan\u0131c\u0131n\u0131n kimli\u011fini sorgular. Bu nedenle daha g\u00fcvenli bir kullan\u0131m olana\u011f\u0131 sunar. G\u00fcvenlik kontrol\u00fcn\u00fcn sa\u011flanmas\u0131n\u0131n ard\u0131ndan y\u00f6nlendirme yap\u0131larak IP adresinin sitenize ula\u015fmas\u0131na izin verilir.<\/li>\n<li>Dinamik Paket Filtre Firewall: Bu pakette g\u00fcvenlik, sadece dosyan\u0131n ad\u0131 ve nereye ula\u015faca\u011f\u0131 ile ilgilenmez. A\u011f\u0131n\u0131za gelen verinin kayna\u011f\u0131, \u00e7\u0131k\u0131\u015f\u0131, i\u00e7eri\u011fi, eri\u015fece\u011fi port g\u00fcvenli\u011fi denetlenir. Bu nedenle bu tip g\u00fcvenlik duvar\u0131, sadece tamamen g\u00fcvenli veri giri\u015fine izin verir.<\/li>\n<li>Hibrit Firewall: En az iki tip g\u00fcvenlik sorgusunu b\u00fcnyesinde bar\u0131nd\u0131ran <strong><b>Firewall<\/b><\/strong>\u00e7e\u015fididir.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Firewall G\u00fcvenlik Duvar\u0131 Nedir? Firewall kelimesinin tan\u0131m\u0131, site i\u00e7i g\u00fcvenli\u011fi sa\u011flayan yaz\u0131l\u0131m \u015feklinde yap\u0131l\u0131r. Site i\u00e7indeki hareketlerden riskli olanlar\u0131 belirleyerek engeller, spam trafi\u011fi \u00f6nler. Firewall kullan\u0131m\u0131, tehdit olarak alg\u0131lanacak dosya, yorum, site hareketi ve kullan\u0131c\u0131lar\u0131 siteden uzakla\u015ft\u0131r\u0131r. Bu sayede sitenize daha fazla do\u011fal trafik ve daha kaliteli ziyaret\u00e7i giri\u015fi yap\u0131lmas\u0131na yard\u0131mc\u0131 olur. Firewall kurallar\u0131n\u0131 kendiniz [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1068,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[195,194,176],"class_list":["post-2868","post","type-post","status-publish","format-standard","has-post-thumbnail","category-bilgi-bankasi","tag-duvari","tag-firewall","tag-guvenlik"],"_links":{"self":[{"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/posts\/2868","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=2868"}],"version-history":[{"count":0,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/posts\/2868\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/media\/1068"}],"wp:attachment":[{"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=2868"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=2868"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sh.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=2868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}