产品规格：
    2 Gbps firewall throughput (App-ID enabled¹)
    2 Gbps threat prevention throughput
    1 Gbps IPSec VPN throughput
    500,000 max sessions
    60,000 new sessions per second
    2,000 IPSec VPN tunnels/tunnel interfaces
    5,000 SSL VPN Users
    20 virtual routers
    10/20* virtual systems (base/max²)
    80 security zones
    10,000 max number of policies