ZEN Loadbalancer

Recently I just came across an article on Zen loadbalancer. Its a Debian ISO, ready to install. The installation and configuration is easy, and straight forward. Below is the feature list taken from its website. After installation, you can configure the LB from its https gui page. Config and testing can be done within minutes after installation.

Features
 Advanced Layer7 load balancing
 Max 30000 concurrent connections in TCP. *
 sNAT load balancing load balancing
 Balance TCP or UDP services
 Balance dataline communications
 HTTP and HTTPS services special options
 HTTP/S persistence client session enabled through cookie, header, basic, ip, url
 SSL wrapper / offload
 Wide range of load balance algorithms like: round robin, weight, priority or hash
 Persistence client sessions
 VLAN Tagging (802.1Q)
 Advanced network configuration for physical, virtual or VLAN interfaces
 Independent route tables for every physical or VLAN NICs
 Advanced checking for backend servers through FarmGuardian
 High availability load balancer service through an active-pasive cluster
 Optional configuration backups system
 Advanced global status with graphs
 Easy administration over https GUI and ssh
 Virtual service configurations can be edited and tuned on-the-fly
 Use NTP sync
 Easy and free updates over APT repositories
 Configure virtual servers and farms as your hardware allows
 Advanced system monitoring with graphs
 Management of SSL certificates
 Real Time syncronization between cluster nodes

*hardware depend