Reset a VPN tunnel in CheckPoint R77.30 or earlier

Some times VPN tunnels may require resetting, in CheckPoint firewalls that can be done by removing the IPSEC/IKE SA’s relating to that tunnel using the “vpn tu” command.
Basically to reset the VPN tunnel do the following:

1. Log in to the firewall cli and open the vpn tunnel utility:

   cp> vpn tu
   
   **********     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

2. Press nr 7 on your keyboard,  insert peer GW IP address and press enter twice:

   *******************************************
   
   7
   
   Enter IP of peer (format: xxx.xxx.xxx.xxx): 123.123.123.123
   
   Hit <Enter> key to continue ...

3. List the IPsec and IKE SAs to see if they have re-appeared for your GW (in some setups it may be required to try and access the VPN connection for the tunnel to be actually renegotiated)