Today's businesses rely increasingly on their communications fabric to transmit mission-critical company information between headquarters and remote locations securely. Small and branch offices as well as retail stores, hotels, banks and gas stations exchange customer purchase and inventory information with every transaction. Critical to their success is the ability to transmit this information securely and to ensure that network connectivity is always available. The TZ 170 SP, part of SonicWALL's TZ 170 Series, is a high-performance, multi-layer network security platform that provides businesses, telecommuters and small offiCE .NETworks with constant access to critical data. Should the primary broadband connection go down, the TZ 170 SP ensures continuous uptime for VPN connectivity by automatically failing over to either a second WAN connection or an integrated analog modem. Once the broadband connection has been re-established, the TZ 170 SP detects the restored connection and automatically fails back, ensuring the best possible connectivity.