I need some help with how I should configure a VPN tunnel to reach 3 different offices. We have 3 different offices in 3 remote locations. Each office has one Fortigate 60F. We want to have a VPN tunnel for our staff to reach the internal network for all 3 offices. Does this require 3 different VPN tunnels or can I just configure site-to-site tunnels between the offices and use one VPN to reach all of them?
As you can probably tell, I'm not that experienced in networking/fortinet and I appreciate all the info and help I can get.
If you're not familiar with routing protocol like BGP or OSPF that ADVPN would deploy, I wouldn't go that direction unless the number of offices are expected to grow soon. Besides, if only three locations, even if you manually "meshed" them, only three site-to-site VPNs are necessary (those VPNs are counted by site pairs, not per site) so you can easily handle your needs with static routes, which you're likely familiar with.
It's your choice but a hub and spoke topology with static routes suggested above would be easier for you.
Based on your options I would recommend configuring Site A---SiteB Site B-----Site C this way it is simple and you can reach SiteA to Site C without any tunnel this is feasible if you only have 3 sites in the future if you have more sites to expand you can consider ADVPN concept or dial-up vpn with hub and spoke.
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