Using a zone as a concentrator
A simple way to provide communication among all of the spokes is to create a zone and allow intra-zone communication. You cannot apply UTM features using this method.
1. Go to System > Network > Interfaces.
2. Select the down-arrow on the Create New button and select Zone.
3. In the Zone Name field, enter a name, such as Our_VPN_zone.
4. Clear Block intra-zone traffic.
5. In the Interface Members list, select the IPsec interfaces that are part of your VPN.
6. Select OK.