Are you deploying the firewall in Bridge Mode? In Gateway mode you don't need the above mentioned rule, try accessing the firewall from LAN zone, I guess there is MAC binding configured upstream
Navigate to System> Network> Interfaces> PortB:
Network Zone: WAN IP Assignment: DHCP
Advanced Settings:
Interface Speed: Auto-Negotiation (Default) Override Default MAC Address: Add MAC address of old firewall public interface
Are you deploying the firewall in Bridge Mode? In Gateway mode you don't need the above mentioned rule, try accessing the firewall from LAN zone, I guess there is MAC binding configured upstream
Navigate to System> Network> Interfaces> PortB:
Network Zone: WAN IP Assignment: DHCP
Advanced Settings:
Interface Speed: Auto-Negotiation (Default) Override Default MAC Address: Add MAC address of old firewall public interface
