spotsonic.blogg.se - Ssh key copy to server

#Ssh key copy to server how to#
#Ssh key copy to server password#

On H2, change the permission of the private key to be less accessible (otherwise next step will fail) with the command chmod 600 ~/.ssh/id_rsa, so that the output of the following command ls -alt ~/.ssh will contain the following (notice the difference from the above permission):.rw-r-r- 1 youUserName youUserName 412 Nov 3 14:52 id_rsa.pub rw-r-r- 1 youUserName youUserName 1240 Nov 3 14:52 id_rsa When you will execute the following command in H2 ls -alt ~/.ssh the output will contain at least the following: ~/.ssh/id_rsa.pub) from your H1 machine to your H2 machine in location ~/.ssh (Do this only through a trusted USB that you will format afterwards, do not use emails or any other internet-based medium). This is not advisable for security reasons as extensively mentioned by others, however, it is possible to achieve with per the following steps:

#Ssh key copy to server how to#

The problem that the questions seem to ask is how to make use of the same private-public key pair generated and used on a personal computer (H1) can be used on another personal machine (H2) so as not to have to set up a new private-public key and manually add it to each server that we used to connect to. One account on a server has a single username and any number of authorized public keys, all of them listed in the ~/.ssh/authorized_keys file.Īll the answers here address the issue of copying identity from one server to another server by making use of ssh-copy-id, which is not the point of the question.

#Ssh key copy to server password#

Public-key systems like ssh are better than the password system: People have it hammered into their head that one account on a server has a single username and, of course, a single authorized password. That can't be the right way, because everyone says that the private key is never supposed to leave the client machine.

I suppose I could simply copy the private key from my laptop to my workstation.

That can't be the right way, because everyone says that public key authentication is much better than passwords.

I suppose I could simply log in with the same password from both places.

I also want to log in to my server from my workstation ("H2").

I log in to my server from my personal laptop ("H1").

I assume that what you are really asking is From now on, you can log into the S1 from your H2, and also log into the S1 from your H1. This installs the public key of your workstation into the ~/.ssh/authorized_keys file for that user on the server. Type: ssh-copy-id use your actual username on S1 and S1's hostname, and later type in your password on S1 when it asks for it).

Copy your H2's public key to the server.

Also generate the corresponding public key. If you haven't already generated a fresh private key on H2, do so now.

There is never a good reason to copy a private key from some other machine.

Now you have the key, go ahead and pop it open to a text editor, or cat it $ cat id_rsa_foo.Set up H2 using the same process (but not the same private key) as you did when you set up H1:

id_rsa_foo.pub this is the public file that goes to your remote server. Two files were created: id_rsa_foo This is your key file that sits on the local machine. Next it asks to make a passphrase, it’s a password you have to type when logging in with the key. Enter file in which to save the key (/Users/bob/.ssh/id_rsa): /Users/bob/.ssh/id_rsa_foo