sudo update-rc.d httptunnel defaults

Adding system startup for /etc/init.d/httptunnel ...
  /etc/rc0.d/K20httptunnel -> ../init.d/httptunnel
  /etc/rc1.d/K20httptunnel -> ../init.d/httptunnel
  /etc/rc6.d/K20httptunnel -> ../init.d/httptunnel
  /etc/rc2.d/S20httptunnel -> ../init.d/httptunnel
  /etc/rc3.d/S20httptunnel -> ../init.d/httptunnel
  /etc/rc4.d/S20httptunnel -> ../init.d/httptunnel
  /etc/rc5.d/S20httptunnel -> ../init.d/httptunnel