Based on this product's specifications, here are some alternatives and similar models
Hardware firewall Lancom Lancom Systems R&S Unified Firewall UF-100 3.8 Gbit/s throughput VPN 0.43 Gbit/s 30 users SNMP wired
Summary description:
Lancom Systems R&S Unified Firewall UF-100 is a hardware firewall offering 3.8 Gbit/s firewall throughput and 0.43 Gbit/s VPN throughput, designed for up to 30 users. It provides wired connectivity, SNMP v2c/v3 management and operates from 100–240 V AC with typical power consumption of 36 W. Suitable for small offices and branch sites requiring centralized management, VPN connectivity and reliable perimeter protection.