copy_ssh_keys() {
  cat ~/.ssh/authorized_keys | ssh $* '(test -f ~/.ssh/id_rsa || ssh-keygen -t rsa -b 4096 -f ~/.ssh/id_rsa -N "") </dev/null && cat > ~/.ssh/authorized_keys'
  echo -n "Testing..."
  ssh -o PasswordAuthentication=no $* 'echo Success'
}
secure_ssh() {
  echo "Copying script over..."
  ssh $* 'cat > /tmp/script.sh' <<'EOF'
cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak
sed -ri'' 's/^(\s*Protocol\s)/#\1/gI' /etc/ssh/sshd_config
sed -ri'' 's/^(\s*UseDNS\s)/#\1/gI' /etc/ssh/sshd_config
sed -ri'' 's/^(\s*PermitEmptyPasswords\s)/#\1/gI' /etc/ssh/sshd_config
sed -ri'' 's/^(\s*PermitRootLogin\s)/#\1/gI' /etc/ssh/sshd_config
(echo -e "Protocol 2\nUseDNS no\nPermitEmptyPasswords no\nPermitRootLogin no";cat /etc/ssh/sshd_config)>/tmp/sshd_config
mv /tmp/sshd_config /etc/ssh/sshd_config
diff -urN /etc/ssh/sshd_config.bak /etc/ssh/sshd_config
sshd -t
mv /etc/ssh/sshd_config.bak /etc/ssh/sshd_config
EOF
  echo "Running script..."
  ssh -t $* 'chmod +x /tmp/script.sh;command -v sudo >/dev/null 2>&1 && sudo /tmp/script.sh || /tmp/script.sh;rm /tmp/script.sh'
}