I am facing a routing issue that is causing a headache for me. In our Site to Site VPN tunnels - it seems I can get routing to work, not via an actual route, but through the site-to-site VPN settings for the tunnel. As long as my destination networks are part of the VPN Policy - then I can access devices on the various networks. If I have network "D" (Dev network) that I need to access from my branch office, do I need to have that "Dev network" in my site-to-site VPN tunnel? I have done it this way for other networks.
My main office branch firewall (SonicWall NSA 2600) is aware of network D and handles the routing for it in the main office. Now I need to have our branch office access network D. I would think I could simply create a route for that network on the branch office firewall (SonicWall TZ105W).
Thanks for any assistance here.