Configuring firewall B 

VPN policy

To correspond to the IPSec policy, traffic has to come from the virtual network B Net-B-Virt and contact the virtual network A Net-A-Virt.

NAT policy 

  • Rule 1 allows translating traffic from real network B Net-B-Real to virtual network B Net-B-Virt before the IPSec module (Options column).
  • Rule 2 allows redirecting packets going to virtual network B Net-B-Virt to internal real network B Net-B-Real.

Ensure that virtual and real networks have the same sub-network mask.

Filter policy