The Cisco Secure PIX Firewall is the dedicated firewall appliance in Cisco's firewall family and holds the top ranking in both market share and performance. The Cisco Secure PIX Firewall delivers strong security and, with market-leading performance, creates little to no network performance impact. The product line enforces secure access between an internal network and Internet, extranet, or intranet links. The Cisco Secure PIX Firewall scales to meet a range of customer requirements and network sizes.Cisco Secure PIX 515 is intended for Small/Medium Business and remote offices deployments and has throughput measured at 120 Mbps with the ability to handle up to 125, 000 simultaneous sessions.