raspberrypi - tunel ssh

#!/bin/bash
createTunnel() {
  /usr/bin/ssh -f -N -R 2222:localhost:22 ubuntu@HOST
  /usr/bin/ssh -f -N -R 8081:localhost:8081 ubuntu@HOST

  if [[ $? -eq 0 ]]; then
    echo Tunnel created successfully
  else
    echo An error occurred creating a tunnel. RC was $?
  fi
}

/bin/sleep 30

kill `pidof ssh`

echo Creating new tunnel connection
createTunnel


chmod 400 tunnel.ssh

crontab -e

*/15 * * * * /home/pi/tunnel.sh > tunnel.log 2>&1
@reboot /home/pi/tunnel.sh > tunnel.log 2>&1


sudo vi /etc/ssh/sshd_config

GatewayPorts yes
AllowTcpForwarding yes

systemctl reload ssh.service