After finishing serial port configuration add interfaces through which routers will be communicating, You can add IP address that will be allowed to connect or enter 0.0.0.0/0 to allow all connections coming through correct port. | After finishing serial port configuration add interfaces through which routers will be communicating, You can add IP address that will be allowed to connect or enter 0.0.0.0/0 to allow all connections coming through correct port. |