The Juniper Networks Integrated Security Gateways (ISG) are purpose-built security solutions that leverage a fourth generation security ASIC, the GigaScreen, along with high-speed microprocessors to deliver unmatched firewall and VPN performance. The Juniper Networks ISG 2000 and ISG 1000 are ideally suited for securing enterprise, carrier and data center environments where advanced applications such as VoIP and streaming media dictate consistent, scalable performance. Integrating best-in-class Deep Inspection firewall, VPN and Dos solutions, the ISG 2000 and ISG 1000 enable secure, reliable connectivity along with network and application-level protection for critical, high-traffic network segments.The ISG 1000 is a fully integrated FW/VPN/IDP1 system with gigabit performance, a modular architecture and rich virtualization capabilities. The base FW/VPN system comes with four fixed 10/100/1000 interfaces and two additional I/O modules for interface expansion.