The Next Generation Firewall PA-2020 from Palo Alto Networks is designed for use as a high-speed Internet gateway, providing network security and threat prevention in large branch offices and medium-sized enterprises. URL filtering functionality for the PA-2020 is available via subscription. The functionality is based on an on-box customizable database that can include up to 76 categories and 20 million URLs. The user can customize categories, allowable content, block lists and block pages. The maximum number of policies that can be created is 2,500.