EDR-G903 Firewall/VPN secure router supports three combo Gigabit ports with built-in RJ45 ports and SFP slots for connecting to a WAN, a LAN, and a WAN or DMZ. Dual WAN feature helps establish a reliable Internet connection backup and provides a secondary option for load sharing two ISPs. It supports intelligent firewall functions, and Quick Automation Profile supports 25 common fieldbus protocols.