I have 4 sites configured with IPsec VPNs like the diagram below:
Site A ------------ Main Site -------------- Site B | | Site C
We use a variety of different models of watchguard firewalls. The one at the main site is a Watchguard XTM510
From the main site, I can connect to systems at sites A, B and C, and they can all connect to the main site.
But site A can't talk to B and C, site B can't talk to A and C, etc.
Is there any way to configure routing between the VPN connections, so that traffic from site A goes:
Site A -----(vpn)-------Main Site-------(vpn)------Site B
Or do I need to setup tunnels between every site separately? With just 4 sites, that would mean I need to setup 6 VPNs...but as I add more sites it will grow very quickly!
I do realize this would use more bandwidth than connecting directly, but the main site has a nice fibre line and can handle the extra traffic. Hopefully it would also allow me to manage the filtering between VPNs in one place, instead of on each individual box.