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--- linux:ssh:public-key-authentication [2024/09/03 14:56] – created odefta
+++ linux:ssh:public-key-authentication [2024/09/03 15:10] (current) – odefta
@@ Line 1: / Line 1: @@
+====== Public key authentication to remote ssh server ======
+Create a SSH key-pair and set a custom name for it to not override the existing one. \\
+Change id_rsa with a custom name (for example id_rsa_odcent8)
-<code>
+<code bash>
 cd ~/.ssh/
 </code>
@@ Line 17: / Line 20: @@
   Your identification has been saved in id_rsa_odcent8
   Your public key has been saved in id_rsa_odcent8.pub
+Copy the public key to the remote machine.
+<code>
+ssh-copy-id -i ~/.ssh/id_rsa_odcent8.pub root@remote_ssh_server
+</code>
+Connect to remote_ssh_server and edit /etc/ssh/sshd_config:
+<code>
+vi /etc/ssh/sshd_config
+PubkeyAuthentication yes
+systemctl restart sshd
+</code>
+On the host machine (exit from the remote one):
+Edit ~/.ssh/config file and add:
+<code>
+vi ~/.ssh/config
+Host remote_ssh_server
+    User root
+    IdentityFile ~/.ssh/id_rsa_odcent8
+</code>
+Now you can connect without password:
+<code>
+ssh root@remote_ssh_server
+</code>