I have attached my current network diagram. Now, i want to upgrade my network with a secondary VPN on wireless links. I have made wireless links from site A to site B & site A to site C. & at Site A both links are merged. So that site B can communicate with site C. (link between site B & site C is not feasible)
Now, what about the VPN Appliances?
Can you tell me what devices (VPN Firewall or router) should i use.
Note: Both VPNs should run simontanously to auto switch in case of failure.