Para reiniciar un VPN sitio a sitio en un firewall Check Point hay que conectarse en modo expert por ssh y ejecutar el siguiente comando.
Te aparecerá un listado como el de abajo, en el prompt debes escribir 7 y luego presionar la tecla Enter.
********** Select Option **********
(1) List all IKE SAs
(2) List all IPsec SAs
(3) List all IKE SAs for a given peer (GW) or user (Client)
(4) List all IPsec SAs for a given peer (GW) or user (Client)
(5) Delete all IPsec SAs for a given peer (GW)
(6) Delete all IPsec SAs for a given User (Client)
(7) Delete all IPsec+IKE SAs for a given peer (GW)
(8) Delete all IPsec+IKE SAs for a given User (Client)
(9) Delete all IPsec SAs for ALL peers and users
(0) Delete all IPsec+IKE SAs for ALL peers and users
(Q) Quit
*******************************************Te pedirá la IP publica del peer, la escribes y presionas Enter y listo!