Alright. The configuration is like that:
I have a modem from the ISP connected to a main router A (Linksys-WRT3200AC)
All devices, printer, network drive are connected to router “A” LAN or wireless, Router A local IP address is 192.168.1.1
Router B (Buffalo-WZR-HP-G300NH) is a VPN router connected from its WAN to Router A LAN.
Router B has an IP address 192.168.1.100 on the Router A network and has a local IP of 192.168.2.1
As u see, router B is on a different subnet.
I want to
1- have the preffirals on subnet 192.168.1.x to be acceptable to subnet 192.168.2.x
2- extend the range of the VPN router B by using another router C (Linksys-EA6100) connected to one of Router A LAN outlets
The clouded routers in the diagram are router B & C.
Network Diagram: https://ufile.io/63z4jcip
