{"id":23337,"date":"2025-05-21T08:27:08","date_gmt":"2025-05-21T05:27:08","guid":{"rendered":"https:\/\/www.cenuta.com\/blog\/?p=23337"},"modified":"2025-05-21T08:27:10","modified_gmt":"2025-05-21T05:27:10","slug":"ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri","status":"publish","type":"post","link":"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/","title":{"rendered":"SSH Ba\u011flant\u0131 Problemleri Nas\u0131l \u00c7\u00f6z\u00fcl\u00fcr? Hata Kodlar\u0131 ve \u00c7\u00f6z\u00fcmleri"},"content":{"rendered":"\n<p>SSH (Secure Shell), uzak sunuculara g\u00fcvenli ba\u011flant\u0131 kurmak i\u00e7in kullan\u0131lan en yayg\u0131n protokollerden biridir. Ancak baz\u0131 durumlarda SSH ba\u011flant\u0131s\u0131 s\u0131ras\u0131nda hatalarla kar\u015f\u0131la\u015f\u0131labilir. Bu makalede, SSH ba\u011flant\u0131 problemlerinin nedenlerini, yayg\u0131n hata kodlar\u0131n\u0131 ve bu sorunlar\u0131n nas\u0131l \u00e7\u00f6z\u00fclebilece\u011fini detayl\u0131 bir \u015fekilde ele alaca\u011f\u0131z.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0130\u00e7indekiler<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a6f02746c5cb\" class=\"ez-toc-cssicon-toggle-label\"><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><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a6f02746c5cb\"  aria-label=\"Toggle\" \/><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.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#SSH_Nedir_ve_Neden_Kullanilir\" title=\"SSH Nedir ve Neden Kullan\u0131l\u0131r?\">SSH Nedir ve 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-2\" href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#SSH_Baglanti_Problemlerinin_Genel_Nedenleri\" title=\"SSH Ba\u011flant\u0131 Problemlerinin Genel Nedenleri\">SSH Ba\u011flant\u0131 Problemlerinin Genel Nedenleri<\/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.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#Yaygin_SSH_Hatalari_ve_Cozum_Yollari\" title=\"Yayg\u0131n SSH Hatalar\u0131 ve \u00c7\u00f6z\u00fcm Yollar\u0131\">Yayg\u0131n SSH Hatalar\u0131 ve \u00c7\u00f6z\u00fcm Yollar\u0131<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#1_Connection_Refused_Baglanti_Reddedildi\" title=\"1. Connection Refused (Ba\u011flant\u0131 Reddedildi)\">1. Connection Refused (Ba\u011flant\u0131 Reddedildi)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#2_Connection_Timed_Out_Baglanti_Zaman_Asimina_Ugradi\" title=\"2. Connection Timed Out (Ba\u011flant\u0131 Zaman A\u015f\u0131m\u0131na U\u011frad\u0131)\">2. Connection Timed Out (Ba\u011flant\u0131 Zaman A\u015f\u0131m\u0131na U\u011frad\u0131)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#3_Permission_Denied_Izin_Reddedildi\" title=\"3. Permission Denied (\u0130zin Reddedildi)\">3. Permission Denied (\u0130zin Reddedildi)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#4_No_Route_to_Host\" title=\"4. No Route to Host\">4. No Route to Host<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#5_Host_Key_Verification_Failed\" title=\"5. Host Key Verification Failed\">5. Host Key Verification Failed<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#SSH_Baglantisi_Kurulamiyorsa_Ne_Yapilmali\" title=\"SSH Ba\u011flant\u0131s\u0131 Kurulam\u0131yorsa Ne Yap\u0131lmal\u0131?\">SSH Ba\u011flant\u0131s\u0131 Kurulam\u0131yorsa Ne Yap\u0131lmal\u0131?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#SSH_Baglanti_Sorunlari_Icin_Ipuclari\" title=\"SSH Ba\u011flant\u0131 Sorunlar\u0131 \u0130\u00e7in \u0130pu\u00e7lar\u0131\">SSH Ba\u011flant\u0131 Sorunlar\u0131 \u0130\u00e7in \u0130pu\u00e7lar\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/#Sonuc\" title=\"Sonu\u00e7\">Sonu\u00e7<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SSH_Nedir_ve_Neden_Kullanilir\"><\/span>SSH Nedir ve Neden Kullan\u0131l\u0131r?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>SSH, internet \u00fczerinden \u015fifreli ileti\u015fim kurmak i\u00e7in kullan\u0131lan bir protokold\u00fcr. Genellikle sistem y\u00f6neticileri taraf\u0131ndan sunuculara eri\u015fim, dosya transferi veya uzak komut \u00e7al\u0131\u015ft\u0131rma amac\u0131yla tercih edilir. SSH ba\u011flant\u0131s\u0131, kimlik do\u011frulama ve veri \u015fifreleme a\u00e7\u0131s\u0131ndan olduk\u00e7a g\u00fcvenlidir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SSH_Baglanti_Problemlerinin_Genel_Nedenleri\"><\/span>SSH Ba\u011flant\u0131 Problemlerinin Genel Nedenleri<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>SSH ba\u011flant\u0131s\u0131nda kar\u015f\u0131la\u015f\u0131lan problemler bir\u00e7ok farkl\u0131 fakt\u00f6re ba\u011fl\u0131 olabilir:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Yanl\u0131\u015f IP adresi veya hostname kullan\u0131m\u0131<\/li>\n\n\n\n<li>SSH servisi \u00e7al\u0131\u015fm\u0131yor olabilir<\/li>\n\n\n\n<li>G\u00fcvenlik duvar\u0131 ba\u011flant\u0131y\u0131 engelliyor olabilir<\/li>\n\n\n\n<li>SSH portu de\u011fi\u015ftirilmi\u015f olabilir<\/li>\n\n\n\n<li>Anahtar tabanl\u0131 kimlik do\u011frulamada hatal\u0131 yap\u0131land\u0131rma<\/li>\n\n\n\n<li>DNS \u00e7\u00f6z\u00fcmleme sorunlar\u0131<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Yaygin_SSH_Hatalari_ve_Cozum_Yollari\"><\/span>Yayg\u0131n SSH Hatalar\u0131 ve \u00c7\u00f6z\u00fcm Yollar\u0131<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Connection_Refused_Baglanti_Reddedildi\"><\/span>1. <strong>Connection Refused (Ba\u011flant\u0131 Reddedildi)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>Nedenleri:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SSH servisi \u00e7al\u0131\u015fm\u0131yor olabilir<\/li>\n\n\n\n<li>Yanl\u0131\u015f IP adresi veya port<\/li>\n<\/ul>\n\n\n\n<p><strong>\u00c7\u00f6z\u00fcm:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SSH servisini kontrol edin: <code>sudo systemctl status ssh<\/code><\/li>\n\n\n\n<li>Varsay\u0131lan portun (22) kullan\u0131ld\u0131\u011f\u0131ndan emin olun veya \u00f6zel port numaras\u0131n\u0131 belirtin: <code>ssh -p 2222 kullan\u0131c\u0131@sunucu_adresi<\/code><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Connection_Timed_Out_Baglanti_Zaman_Asimina_Ugradi\"><\/span>2. <strong>Connection Timed Out (Ba\u011flant\u0131 Zaman A\u015f\u0131m\u0131na U\u011frad\u0131)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>Nedenleri:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sunucuya ba\u011flant\u0131 kurulamad\u0131<\/li>\n\n\n\n<li>G\u00fcvenlik duvar\u0131 veya a\u011f eri\u015fimi engellenmi\u015f olabilir<\/li>\n<\/ul>\n\n\n\n<p><strong>\u00c7\u00f6z\u00fcm:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sunucu a\u00e7\u0131k ve internete ba\u011fl\u0131 m\u0131 kontrol edin<\/li>\n\n\n\n<li>Sunucu taraf\u0131nda SSH portuna izin verildi\u011finden emin olun: <code>sudo ufw allow ssh<\/code><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Permission_Denied_Izin_Reddedildi\"><\/span>3. <strong>Permission Denied (\u0130zin Reddedildi)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>Nedenleri:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Yanl\u0131\u015f kullan\u0131c\u0131 ad\u0131 veya parola<\/li>\n\n\n\n<li>Hatal\u0131 SSH anahtar dosyas\u0131<\/li>\n<\/ul>\n\n\n\n<p><strong>\u00c7\u00f6z\u00fcm:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Do\u011fru kullan\u0131c\u0131 ad\u0131n\u0131 kulland\u0131\u011f\u0131n\u0131zdan emin olun<\/li>\n\n\n\n<li>Giri\u015f i\u00e7in do\u011fru \u00f6zel anahtar dosyas\u0131n\u0131 kullan\u0131n: <code>ssh -i ~\/.ssh\/id_rsa kullan\u0131c\u0131@sunucu_adresi<\/code><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_No_Route_to_Host\"><\/span>4. <strong>No Route to Host<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>Nedenleri:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A\u011f yap\u0131land\u0131rma hatas\u0131<\/li>\n\n\n\n<li>Sunucuya eri\u015fim yok<\/li>\n<\/ul>\n\n\n\n<p><strong>\u00c7\u00f6z\u00fcm:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IP adresini kontrol edin<\/li>\n\n\n\n<li>A\u011f kablosu, VPN ba\u011flant\u0131s\u0131 veya sunucu g\u00fcvenlik grubu ayarlar\u0131n\u0131 kontrol edin<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Host_Key_Verification_Failed\"><\/span>5. <strong>Host Key Verification Failed<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>Nedenleri:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sunucunun parmak izi de\u011fi\u015fmi\u015f olabilir<\/li>\n\n\n\n<li>DNS spoofing veya MITM (ortadaki adam) sald\u0131r\u0131s\u0131 olabilir<\/li>\n<\/ul>\n\n\n\n<p><strong>\u00c7\u00f6z\u00fcm:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>known_hosts<\/code> dosyas\u0131ndaki eski anahtar kayd\u0131n\u0131 silin: <code>ssh-keygen -R sunucu_adresi<\/code><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SSH_Baglantisi_Kurulamiyorsa_Ne_Yapilmali\"><\/span>SSH Ba\u011flant\u0131s\u0131 Kurulam\u0131yorsa Ne Yap\u0131lmal\u0131?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>SSH Servisinin Aktif Oldu\u011fundan Emin Olun<\/strong> <code>sudo systemctl restart ssh<\/code><\/li>\n\n\n\n<li><strong>G\u00fcvenlik Duvar\u0131 Ayarlar\u0131n\u0131 Kontrol Edin<\/strong> <code>sudo ufw status sudo iptables -L<\/code><\/li>\n\n\n\n<li><strong>SSH Portunu Do\u011fru Kulland\u0131\u011f\u0131n\u0131zdan Emin Olun<\/strong>\n<ul class=\"wp-block-list\">\n<li>Varsay\u0131lan d\u0131\u015f\u0131ndaki portlar i\u00e7in: <code>ssh -p 2200 kullan\u0131c\u0131@sunucu<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Anahtar Yetkilendirmelerini Kontrol Edin<\/strong>\n<ul class=\"wp-block-list\">\n<li><code>.ssh\/authorized_keys<\/code> dosyas\u0131n\u0131n izinleri: <code>chmod 600 authorized_keys chmod 700 ~\/.ssh<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SSH_Baglanti_Sorunlari_Icin_Ipuclari\"><\/span>SSH Ba\u011flant\u0131 Sorunlar\u0131 \u0130\u00e7in \u0130pu\u00e7lar\u0131<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Verbose modunu kullan\u0131n<\/strong>: <code>ssh -v kullan\u0131c\u0131@sunucu<\/code> Bu komut, ba\u011flant\u0131 s\u00fcrecini ayr\u0131nt\u0131l\u0131 g\u00f6sterir ve hata tespiti i\u00e7in olduk\u00e7a yararl\u0131d\u0131r.<\/li>\n\n\n\n<li><strong>DNS Problemlerinden Ka\u00e7\u0131n\u0131n<\/strong>:<br>IP adresi ile ba\u011flanarak DNS kaynakl\u0131 sorunlar\u0131 ortadan kald\u0131rabilirsiniz.<\/li>\n\n\n\n<li><strong>Anahtar Tabanl\u0131 Kimlik Do\u011frulama Kullan\u0131n<\/strong>:<br>\u015eifre yerine anahtar tabanl\u0131 ba\u011flant\u0131 hem daha g\u00fcvenli hem de daha h\u0131zl\u0131d\u0131r.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sonuc\"><\/span>Sonu\u00e7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>SSH ba\u011flant\u0131 problemleri \u00e7o\u011fu zaman do\u011fru yap\u0131land\u0131rma ve temel kontrollerle \u00e7\u00f6z\u00fclebilir. Yayg\u0131n hatalar\u0131 tan\u0131mak ve sistematik bir \u015fekilde \u00e7\u00f6z\u00fcm \u00fcretmek, ba\u011flant\u0131 s\u00fcreklili\u011fi a\u00e7\u0131s\u0131ndan kritik \u00f6neme sahiptir. Sunucu eri\u015fim sorunlar\u0131 ya\u015fad\u0131\u011f\u0131n\u0131zda yukar\u0131daki ad\u0131mlar\u0131 uygulayarak sorunlar\u0131 h\u0131zla tespit edebilir ve \u00e7\u00f6zebilirsiniz.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SSH (Secure Shell), uzak sunuculara g\u00fcvenli ba\u011flant\u0131 kurmak i\u00e7in kullan\u0131lan<a href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/\">&#8230;<\/a><\/p>\n","protected":false},"author":4,"featured_media":23338,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-23337","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sunucu"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cenuta.com\/blog\/ssh-baglanti-problemleri-nasil-cozulur-hata-kodlari-ve-cozumleri\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SSH Ba\u011flant\u0131 Problemleri Nas\u0131l \u00c7\u00f6z\u00fcl\u00fcr? 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