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Where does the configuration file for SSH come from?
The ssh program on a host receives its configuration from either the command line or from configuration files ~/.ssh/config and /etc/ssh/ssh_config. Command-line options take precedence over configuration files.
How to make SSH hosts Global to all the users?
So SSH has these files that configure settings for a specific user. I’d like to globalise some of these files, like config and known_hosts. So that other users ( including root ) could share the configured hosts. What would be the best way to do this?
How to configure SSH host based authentication per user?
DSA should no longer be used. These keys under /etc/ssh are then created automatically when the openssh package is installed. Next provide the client and root user in ssh shosts.equiv file as shown below. Here my clien’t hostname is rhel-7.example.com
How to create a SSH config file using touch?
By default, the SSH configuration file may not exist, so you may need to create it using the touch command : This file must be readable and writable only by the user and not accessible by others: The SSH Config File takes the following structure: The contents of the SSH client config file is organized into stanzas (sections).
How to configure a SSH server for authentication?
Complete these steps in order to configure the SSH server to perform RSA based authentication. Specify the Host name. Define a default domain name. Generate RSA key pairs. Configure SSH-RSA keys for user and server authentication. Configure the SSH username. Specify the RSA public key of the remote peer. Specify the SSH key type and version.
How to configure secure shell on routers and switches?
Configure the DNS domain. Generate the SSH key to be used. Enable SSH transport support for the virtual type terminal (vtys). If you want to have one device act as an SSH client to the other, you can add SSH to a second device called Reed.
What can SSH be used for in a network?
SSH provides a secure channel over an unsecured network in a client-server architecture, connecting an SSH client application with an SSH server. Common applications include remote command-line login and remote command execution, but any network service can be secured with SSH.
How does ssh connect to the host name?
SSH will match the hostname given on the command line with each of the Host headers that define configuration sections. It will do this from the top of the file downwards, so order is incredibly important. This is a good time to point out that the patterns in the Host definition do not have to match the actual host that you will be connecting with.
What are the keywords in SSH _ config ( 5 )?
The originalhost keyword matches against the hostname as it was specified on the command-line. The user keyword matches against the target username on the remote host. The localuser keyword matches against the name of the local user running ssh (1) (this keyword may be useful in system-wide ssh_config files).