I would like to setup something like the below Router connection.
PC B PC C
PC A - Router A - Router B - Router C - Router D - PC D
PC - stands for computer.
I would like to do a tunnelling between PC A and PC D, meaning in the process PC A cannot connect to PC B or PC C, only to PC D.
P/S: Sorry, diagram not ilustrate correctly. PC B connected to Router B's LAN, and PC C connected to Router C's LAN.
Any Configuration or examples I can use?
Thanks in advance.