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Full Discussion: Need help with SSH
Operating Systems Solaris Need help with SSH Post 302584221 by rama krishna on Thursday 22nd of December 2011 11:50:15 AM
Old 12-22-2011
Need help with SSH

Hi Gurus,

I need some help and explanation of SSH.

Q1)What is the difference between a Private key and Public key .What is their role in SSH.
Q2)I was trying to ssh to server B from Server A from user xyz.
#server A : ssh server B It popped up the following messages
Warning: Permanently added 'server B ,192.168.2.101' (RSA) to the list of known hosts . What does that mean .
Q3) What is the difference between known_hosts file and Authorized keys file.
Q4) How does password less ssh work.

I know too many Questions .

Thanks in Advance Smilie
 

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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
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