Hi everybody,
I have a problem here with connecting multiple networks to each other and beeing the not-so-network-expert, I wanted to check if I can get this resolved at all with my setup.
As I tried to describe in the attached image, I have the networks A, B, C and D.
Network A is connected to Network B
Network B is connected to Network C
Network C is connected to Network D
I have established VPN connections and working routes as follows:
from A to B (VPN tunnel Sophos UTM)
from A to C via B (and SNAT with source changed to origin from B)
from A to D via B (SNAT) and C (via second VPN tunnel non-UTM)
from B to C
from B to D via C (and VPN tunnel)
from C to D (VPN tunnel)
I can ping from A to B,C and D. I also can traceroute from A to B, but not further to C and D. Thus, I am not getting any traffic back from C or D to A. I suppose this has to do with the SNAT in between. I can't get around the SNAT because only traffic from C is being accepted at D.
Is this doable or should I forget about it?
Thanks for your opinions and hints,
playersons
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