The ZyWALL 2 Plus supports IPSec VPN suitable for remote site to central server deployment and home to office or office to home deployments. Data encryption over the Internet ensures secure transmission between the two sites eliminating the need for expensive leased lines, and enabling global interconnectivity at a minimal expense. With the Redundant IPSec VPN feature, the ZyWALL 2 Plus can establish back-up tunnels to main sites.