in the attached topology, port forward was working fine before adding cisco router:
ISP Modem was directly connected to the Switch (all Internal network on VLAN1 only), DDNS was configured on the ISP modem and port forward as shown in diagram.
after added cisco router,
1- do i need static route on the ISP modem to point to VLAN 30 ?
2- what other configuration is needed on cisco router to bypass traffic from outside to the same ports as before ?
