I have about two dozen remote sites that I need to create VPN tunnel. I have Checkpoint FW cluster here. The 23 remote sites either have Cisco, Forcepoint, Palo Alto or Juniper firewalls. Using IPSEC, I need a good plan for setting up individual tunnels to these disparate sites. I have a general understanding of IPSEC but not the specifics for configuring each firewall.
Can you point me to good literature, or links, or video media that helps me lay out a plan for gathering all the information needed for/from each customer to roll out these VPNs?