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!