The Cisco PIX 501 Firewall delivers enterprise-class security for small offices and teleworkers in a reliable, plug-and-play security appliance. Ideal for securing high-speed ""always on"" broadband environments, the Cisco PIX 501 Firewall, provides robust security capabilities, small office networking features and powerful remote management capabilities in a compact, all-in-one solution. The Cisco PIX 501 Firewall is a purpose-built security appliance that provides rich security services including stateful inspection firewalling, virtual private networking (VPN) and intrusion protection in a single device. Using the Cisco state-of-the-art Adaptive Security Algorithm (ASA) and PIX operating system, the PIX 501 ensures that all the users behind it are safe and secure from threats lurking on the Internet. Its powerful stateful inspection firewall technology keeps track of the state of authorized users' network requests and prevents unauthorized network access. By leveraging the flexible access control capabilities of the PIX 501, administrators can also enforce customized policies on network traffic traversing through the firewall.