Hillstone SR-520 is a new generation of high-performance security products designed by Hillstone for the market needs of multiple users, multiple access points, and multiple applications. It adopts a 64-bit multi-core processor, provides up to 1000Mbps of data throughput, and up to 20,000 new connections and 256,000 maximum concurrent sessions per second. It has a built-in ARP defense mechanism that can effectively defend against ARP virus attacks.