How do I route traffic over two IPSEC VPN tunnels

VPN
1

Please forgive me if I use the wrong terminology.

Site A is a TZ350, which has a IPSEC VPN tunnel to Site B, which works fine.

Site B is also a TZ350, which has the aforementioned IPSEC tunnel to Site A, as well as one to Site C (which is a Google Cloud VPN Router). Everthing is working fine.

What steps do I need to take for Site A to be seamlessly able to connect to hosts on Site C? I’d prefer it to happen through the existing tunnels.

Edit: I ended up solving the problem by making a third VPN tunnel from A to C. Works fine, matches our existing setup better.

2

This looks to be helpful.

https://community.sonicwall.com/technology-and-support/discussion/3628/how-to-access-remote-services-on-existing-site-to-site-vpn#latest

3

are you using VTI (virtual tunnel interface) so you can participate in routing (where the firewall is aware the next hop is another firewall)

4

Thanks, I’ll take a look.