04-23-2018
Oh ok. Now i get it. When i try to connect to a server, the server will send me its public key from/etc/ssh. But what is the purpose of the keys from ~/.ssh ? It seems like they are not used.
Here's the scenerio:
I have two virtual machines open side by side - Server_A and Server_B. I tried to access Server_B from Server_A. Now Server_B will send me its public key from /etc/ssh.
Now the public key of Server_B will be in ~/.ssh/known_hosts file.
Again the keys found in my ~/.ssh directory are not used. I just don't get it.
---------- Post updated at 10:51 PM ---------- Previous update was at 09:45 PM ----------
I did some research, and i've found that if i try to connect to a server with the private and public keys from my ~/.ssh directory i have to copy the public key to server's authorized_keys file (using either ssh-copy-id or scp). Is that correct ?
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LEARN ABOUT FREEBSD
ssh-copy-id
SSH-COPY-ID(1) BSD General Commands Manual SSH-COPY-ID(1)
NAME
ssh-copy-id -- copy public keys to a remote host
SYNOPSIS
ssh-copy-id [-lv] [-i keyfile] [-o option] [-p port] [user@]hostname
DESCRIPTION
The ssh-copy-id utility copies public keys to a remote host's ~/.ssh/authorized_keys file (creating the file and directory, if required).
The following options are available:
-i file
Copy the public key contained in file. This option can be specified multiple times and can be combined with the -l option. If a
private key is specified and a public key is found then the public key will be used.
-l Copy the keys currently held by ssh-agent(1). This is the default if the -i option was not specified.
-o ssh-option
Pass this option directly to ssh(1). This option can be specified multiple times.
-p port
Connect to the specified port on the remote host instead of the default.
-v Pass -v to ssh(1).
The remaining arguments are a list of remote hosts to connect to, each one optionally qualified by a user name.
EXIT STATUS
The ssh-copy-id utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
To send a specific key to multiple hosts:
$ ssh-copy-id -i /path/to/keyfile.pub user@host1 user@host2 user@host3
HISTORY
The ssh-copy-id utility was written by Eitan Adler <eadler@FreeBSD.org> as a drop-in replacement for an existing utility included with
OpenSSH.
BSD
February 28, 2014 BSD