https://www.zyxel.com/hu/hu/products_services/VPN-Firewall-ZyWALL-VPN2S/overview
Note: This matrix with firmware OPAL BE 1.12 or later. *1: Actual performance may vary depending on network conditions and activated applications. *2: Maximum throughput measured based on RFC 2544 (1,518-byte UDP packets). *3: VPN throughput based on RFC 2544 (1,424-byte UDP packets). *4: Maximum sessions measured using the industry standard IXIA IxLoad testing tool. *5: Including Gateway-to-Gateway and Client-to-Gateway.