====== Túneles ======

===== Abrir tunel =====

  $ ssh -N -f -L 8080:localhost:80 -M -S .ssh/tunnel.server1 server1.lastr.us

===== Probar =====

  $ wget -O- --user=usuario --password=pass123 http://localhost:8080/

===== Ver PID del tunnel =====

  $ ssh -S .ssh/tunnel.server1 -O check server1.lastr.us

===== Cerrar tunel =====

  $ ssh -S .ssh/tunnel.server1 -O exit server1.lastr.us