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.¤¤The ZyNOS ICSA Firewall certified ZyWALL 2 Plus provides robust firewall protection, based on Stateful Packet Inspection (SPI) and Denial of Service (Dos) technology. The ZyWALL 2 Plus provides the first line of defense against hackers, and other malicious threats. BlueCoat subscription services assist in keeping spyware, malware and phishing exploits from attacking your PCs, and help protect business and family from illegal and unwanted surfing.¤¤ZyWALL 2 Plus maximizes bandwidth utilization based on IP addresses and/or application types. Designed to ensure critical applications, services and specified users have the right amount of bandwidth when required.¤¤ZyWALL 2 Plus increases reliability by supporting Fail-Over and Fail-Back technologies. User Selected back-up ISDN or Analog modem connections automatically switch traffic back to the WAN Port, when the primary connection is re-established. The ZyWALL 2 Plus backup feature ensures access to the net while decreasing the likelihood of potential down times and association losses.