I have configured this network in my laboratory(Please see the photo) . I have two Fortigate 7.2 and both Fortigates are connected through a Site-To-Site VPN Tunnel(I created by IPSEC Wizard) and also I have configured SSL VPN Tunnel mode and my remote user is connected to Fortigate 1 with Public IP 188.8.131.52, now the problem is that Remote VPN user can only see the Client 1 and cannot see the Client 2, what can be issue? or do you have any training material for this topology?
well I would first check the routing table on the remote user client. It has to have a route to the subnet where Fortigate 2 and Client 2 are in. Or the default route has to have FortiGate 1 as gateway (which would mean that all of remote user's internet traffic would go over the vpn and hit FortiGate 1. I would not recommend that).
That is because the routing table is the first thing that is looked at to find a way to the destination. And that way is either the default route (because it matches anything that is not matched by any other route) or a static/connected route.
Then FortiGate 1 has to also know a route to FortiGate 2 subnet plus also has to have a policy that allows traffic from vpn to Fortigate 2 subnet.
And last but not least FortiGate2 has to have a route back to your vpn and a policy to allow traffic to flow.
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