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--- ssh_without_a_password_using_public_private_keys [2009/02/12 11:43] – juckins
+++ ssh_without_a_password_using_public_private_keys [2025/06/08 14:51] (current) – juckins
@@ Line 1: / Line 1: @@
-======SSH / rysnc without password======
+==== SSH / rysnc without password ====
-make sure the same versions of ssh are on both machines (open version 3.1+ works best for HP-UX boxes) \\
-need to configure client (machine connecting from) and server (machine connecting to) \\
+Make sure the same versions of ssh are on both machines. \\
-on client:  create dsa and rsa public and private keys with the following: \\
+You need to configure both client (machine connecting from) and server (machine connecting to). \\
+On client, create ecdsa public and private keys (optionally you can also create rsa and dsa versions) with the following: \\
 <code>
 cd ~/.ssh
+ssh-keygen -t ecdsa -f ~/.ssh/id_ecdsa
 ssh-keygen -t rsa -f ~/.ssh/id_rsa
 ssh-keygen -t dsa -f ~/.ssh/id_dsa
 </code>
-this creates id_dsa, id_dsa.pub, id_rsa, id_rsa.pub - optionally can enter a 'passphrase' when prompted \\
+This creates id_ecdsa, id_ecdsa.pub, id_rsa, id_rsa.pub, id_dsa, id_dsa.pub - optionally can enter a 'passphrase' when prompted \\
+From the client, copy the ssh public keys to the server using the following:
+  ssh-copy-id username@remote_host
+Follow the prompts.  If successful you should be able to ''ssh username@remote_host'' without a password now.
-on server: \\
+To do this process manually on the server: \\
 <code>
 cd ~/.ssh/
 </code>
-vi authorized_keys2 \\
+vi authorized_keys \\
-copy the id_dsa.pub and id_rsa.pub from client into authorized_keys file \\
+Copy the id_dsa.pub and id_rsa.pub from client into authorized_keys file \\
-make sure permissions 644 on authorized_keys \\
+Make sure permissions 600 on authorized_keys \\
 Also:
 <code>
@@ Line 31: / Line 39: @@
 </code>
-Or for Red Hat systems:
+Or for RedHat systems:
 <code>
 service sshd restart
 </code>