Hi, to make this short. I want three sites (each with own subnet and uplink) to reach each other site-to-site with ipsec vpn. Is it possible and how? I know it is pretty simple to have one main site and connect several sites to this main site. But how can i interconnect all sites together like in this picture. I'm struggling. Help is much appreciated.
Does this help you at all? Sophos UTM: Configure a tunnel between two UTMs that use the same LAN range
It should apply to all three I believe, just adding the two sites where they don't exist on the third site.
UTM - 9.713-19 64-bit | Intel Xeon 4-core v3 1225 3.20Ghz 16GB Memory | 500GB SATA HDD | GB Ethernet x5
This is easy with IPsec, SSL VPN or RED if you only want to connect each site with the other two sites: A-B, A-C & B-C. If you want, for example, to use the VPN connection A-B as a backup connection to C if A-C goes down, you will want to use RED and Multipathing rules.
Can you be more explicit about the problem you're experiencing?
Cheers - Bob