{"id":5402,"date":"2026-06-10T12:00:53","date_gmt":"2026-06-10T09:00:53","guid":{"rendered":"https:\/\/hostingdunyam.com.tr\/blog\/?p=5402"},"modified":"2026-06-09T12:33:43","modified_gmt":"2026-06-09T09:33:43","slug":"ssh-nedir","status":"publish","type":"post","link":"https:\/\/hostingdunyam.com.tr\/blog\/ssh-nedir","title":{"rendered":"SSH Nedir?"},"content":{"rendered":"

SSH (Secure Shell), iki bilgisayar aras\u0131nda \u015fifreli ve g\u00fcvenli bir ileti\u015fim kanal\u0131 kuran a\u011f protokol\u00fcd\u00fcr. \u00d6zellikle uzak sunuculara komut sat\u0131r\u0131 \u00fczerinden ba\u011flanmak, dosya transferi yapmak ve a\u011f servislerini g\u00fcvenli bi\u00e7imde y\u00f6netmek i\u00e7in kullan\u0131l\u0131r. T\u00fcm veri ak\u0131\u015f\u0131n\u0131 \u015fifreledi\u011finden, a\u00e7\u0131k a\u011flarda dahi g\u00fcvenli ba\u011flant\u0131 sa\u011flar.<\/span><\/p>\n

G\u00fcn\u00fcm\u00fczde SSH yaln\u0131zca sunucu y\u00f6netimiyle s\u0131n\u0131rl\u0131 de\u011fildir; g\u00fcvenli dosya transferi (SFTP\/SCP), port y\u00f6nlendirme ve t\u00fcnel olu\u015fturma gibi pek \u00e7ok ama\u00e7 i\u00e7in kullan\u0131lmaktad\u0131r.<\/span><\/p>\n

SSH Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/span><\/h2>\n

SSH ba\u011flant\u0131s\u0131 \u00fc\u00e7 a\u015famada kurulur:<\/span><\/p>\n

    \n
  1. Ba\u011flant\u0131 ve m\u00fczakere:<\/b> \u0130stemci sunucuya ba\u011flan\u0131r. \u0130kisi hangi \u015fifreleme algoritmalar\u0131n\u0131 kullanacaklar\u0131 konusunda anla\u015f\u0131r.<\/span><\/li>\n
  2. Kimlik do\u011frulama:<\/b> Sunucu kendini istemciye kan\u0131tlar (host key). Ard\u0131ndan kullan\u0131c\u0131 kimli\u011fini parola veya SSH anahtar\u0131 ile do\u011frular.<\/span><\/li>\n
  3. \u015eifreli oturum:<\/b> Kimlik do\u011frulama ba\u015far\u0131l\u0131ysa \u015fifreli bir oturum a\u00e7\u0131l\u0131r. Bundan sonraki t\u00fcm veri al\u0131\u015fveri\u015fi \u015fifreli olarak ger\u00e7ekle\u015fir.<\/span><\/li>\n<\/ol>\n

    SSH varsay\u0131lan olarak <\/span>22 numaral\u0131 TCP portunu<\/b> kullan\u0131r.<\/span><\/p>\n

    SSH ile Nas\u0131l Ba\u011flant\u0131 Kurulur?<\/span><\/h2>\n

    Temel ba\u011flant\u0131 komutu \u015fu \u015fekildedir:<\/span><\/p>\n

      \n
    • bash<\/span><\/li>\n
    • ssh<\/span> kullanici@sunucu_ip<\/span><\/li>\n
    • \u00d6rne\u011fin:<\/span><\/li>\n
    • bash<\/span><\/li>\n
    • ssh<\/span> root@192.168.1.100<\/span><\/li>\n
    • Farkl\u0131 bir port kullan\u0131l\u0131yorsa:<\/span><\/li>\n
    • bash<\/span><\/li>\n
    • ssh<\/span> -p <\/span>2222<\/span> kullanici@sunucu_ip<\/span><\/li>\n
    • Belirli bir anahtar dosyas\u0131yla ba\u011flanmak i\u00e7in:<\/span><\/li>\n
    • bash<\/span><\/li>\n
    • ssh<\/span> -i ~\/.ssh\/ozel_anahtar kullanici@sunucu_ip<\/span><\/li>\n<\/ul>\n

      SSH G\u00fcvenli\u011fi \u0130\u00e7in Nelere Dikkat Edilmeli?<\/span><\/h2>\n
        \n
      • Varsay\u0131lan 22 portunu de\u011fi\u015ftirin; otomatik tarama ara\u00e7lar\u0131n\u0131n hedefi olmaktan b\u00fcy\u00fck \u00f6l\u00e7\u00fcde kurtulursunuz.<\/span><\/li>\n
      • Root ile do\u011frudan SSH giri\u015fini devre d\u0131\u015f\u0131 b\u0131rak\u0131n.<\/span><\/li>\n
      • Parola ile kimlik do\u011frulamay\u0131 kapat\u0131p yaln\u0131zca SSH anahtar\u0131 kullan\u0131n.<\/span><\/li>\n
      • Fail2Ban kurarak brute-force sald\u0131r\u0131lar\u0131na kar\u015f\u0131 koruma ekleyin.<\/span><\/li>\n
      • SSH eri\u015fimini yaln\u0131zca belirli IP adreslerine k\u0131s\u0131tlamak i\u00e7in g\u00fcvenlik duvar\u0131 kurallar\u0131 olu\u015fturun.<\/span><\/li>\n
      • \u00d6zel anahtar\u0131n\u0131z\u0131 asla sunucuya veya ba\u015fkas\u0131na iletmeyin.<\/span><\/li>\n<\/ul>\n

        SSH \u00dccretsiz mi?<\/span><\/h3>\n

        Evet. OpenSSH, SSH protokol\u00fcn\u00fcn en yayg\u0131n kullan\u0131lan a\u00e7\u0131k kaynakl\u0131 uygulamas\u0131d\u0131r ve t\u00fcm Linux da\u011f\u0131t\u0131mlar\u0131nda, macOS’ta ve Windows 10 sonras\u0131nda yerle\u015fik olarak gelir.<\/span><\/p>\n

        Windows’ta SSH Nas\u0131l Kullan\u0131l\u0131r?<\/span><\/h3>\n

        Windows 10 ve sonras\u0131nda PowerShell veya Komut \u0130stemi \u00fczerinden do\u011frudan <\/span>ssh<\/span> komutu kullan\u0131labilir. Alternatif olarak PuTTY gibi \u00fc\u00e7\u00fcnc\u00fc taraf istemciler de tercih edilebilir.<\/span><\/p>\n

        SSH Ba\u011flant\u0131s\u0131 Kesilirse Ne Olur?<\/span><\/h3>\n

        Varsay\u0131lan davran\u0131\u015fta SSH oturumu kesildi\u011finde \u00e7al\u0131\u015fan komutlar da durur. Bunu \u00f6nlemek i\u00e7in <\/span>tmux<\/span> veya <\/span>screen<\/span> gibi terminal \u00e7oklay\u0131c\u0131lar\u0131 kullan\u0131lmas\u0131 \u00f6nerilir; oturum arka planda \u00e7al\u0131\u015fmaya devam eder.<\/span><\/p>\n

        SSH ile VPN Aras\u0131ndaki Fark Nedir?<\/span><\/h3>\n

        SSH belirli bir ba\u011flant\u0131y\u0131 \u015fifreler ve genellikle tek bir sunucuya eri\u015fim i\u00e7in kullan\u0131l\u0131r. VPN ise t\u00fcm a\u011f trafi\u011fini \u015fifreleyerek cihaz\u0131 farkl\u0131 bir a\u011fa dahil eder. Kullan\u0131m amac\u0131na g\u00f6re biri di\u011ferinin yerini tutmaz.<\/span><\/p>\n

        SSH Anahtar\u0131m\u0131 Kaybedersem Ne Olur?<\/span><\/h3>\n

        \u00d6zel anahtar\u0131n\u0131z\u0131 kaybederseniz ve sunucuda parola giri\u015fi kapal\u0131ysa uzaktan eri\u015fim sa\u011flayamazs\u0131n\u0131z. Bu durumda sunucuya konsoldan (hosting paneli veya veri merkezi eri\u015fimi) ba\u011flanarak yeni bir anahtar tan\u0131mlaman\u0131z gerekir. Bu nedenle yedek eri\u015fim y\u00f6ntemi bulundurman\u0131z \u00f6nemlidir.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

        SSH (Secure Shell), iki bilgisayar aras\u0131nda \u015fifreli ve g\u00fcvenli bir ileti\u015fim kanal\u0131 kuran a\u011f protokol\u00fcd\u00fcr. \u00d6zellikle uzak sunuculara komut sat\u0131r\u0131 \u00fczerinden ba\u011flanmak, dosya transferi yapmak ve a\u011f servislerini g\u00fcvenli bi\u00e7imde y\u00f6netmek i\u00e7in kullan\u0131l\u0131r. T\u00fcm veri ak\u0131\u015f\u0131n\u0131 \u015fifreledi\u011finden, a\u00e7\u0131k a\u011flarda dahi g\u00fcvenli ba\u011flant\u0131 sa\u011flar. G\u00fcn\u00fcm\u00fczde SSH yaln\u0131zca sunucu y\u00f6netimiyle s\u0131n\u0131rl\u0131 de\u011fildir; g\u00fcvenli dosya transferi (SFTP\/SCP), port […]<\/p>\n","protected":false},"author":1,"featured_media":5403,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5402","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genel"],"_links":{"self":[{"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/posts\/5402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=5402"}],"version-history":[{"count":1,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/posts\/5402\/revisions"}],"predecessor-version":[{"id":5404,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/posts\/5402\/revisions\/5404"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/media\/5403"}],"wp:attachment":[{"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=5402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=5402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hostingdunyam.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=5402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}