There is no NAT on the Subscriber Firewall, IP addresses are assigned to the Subscriber devices by a dhcp server on their network, these IPs are permitted to any on the outside interface of the Firewall. The Enterprise Firewall have a static private ...

Enable Transparent Tunneling is checked and IPSec over UDP (NAT/PAT) option is selected on all VPN client.If after connection is established, ESP from the Enterprise Firewall to the VPN client is being filter by the Subscriber Network Firewall, how d...