Secure-SHell (ssh)

Unsafe configuration, vim /etc/ssh/sshd_config:

PermitRootLogin yes

Then restart ssh:

sudo service ssh restart

Transfer keys:

ssh-copy-id root@localhost

Configure Agent

Add the following to your ~/.bash_aliases:

# SSH-agent when logging in over SSH
SSH_ENV="$HOME/.ssh/environment"

function start_agent {
    echo "Initialising new SSH agent..."
    /usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}"
    echo succeeded
    chmod 600 "${SSH_ENV}"
    . "${SSH_ENV}" > /dev/null

    # Add your keys here for example 'id_rsa'
    /usr/bin/ssh-add "$HOME/.ssh/id_rsa";
}

# Source SSH settings, if applicable
if [ -f "${SSH_ENV}" ]; then
    . "${SSH_ENV}" > /dev/null
    ps -ef | grep ${SSH_AGENT_PID} | grep ssh-agent$ > /dev/null || {
        start_agent;
    }
else
    start_agent;
fi

Keys (key-pairs)

Keychain / ssh-agent