Palo Alto array of products are among the finest in the market of next generation firewalls. Their technologies bring business-relevant fundamentals which covers the applications, users, and content under policy control on a high performance firewall design. This technology runs on a high-performance, purpose-built platform based on Palo Alto Networks single-pass parallel processing (SP3) architecture. Unique to the SP3 architecture, traffic is only examined once, using hardware with dedicated processing resources for security, networking, content scanning and management to provide line-rate, low-latency performance under load.
(Source: www.paloaltonetworks.com)