BalanceNG is a modern, IPv6 capable software IP load balancing solution. It is small, fast, and easy to use and set up. It offers session persistence, different distribution methods (Round Robin, Random, Weighted Random, Least Session, Least Bandwidth, Hash, Agent, and Randomized Agent) and a customizable UDP health check agent in source code. It supports VRRP to set up high availability configurations on multiple nodes. It supports SNMP, integrating the BALANCENG-MIB with Net-SNMPD. It implements a very fast in-memory IP-to-location database, allowing powerful location-based server load-balancing.
RBridge is a secure remote Ethernet bridge solution for Linux. It connects two trusted Ethernet segments remotely over UDP using either IPv4 or IPv6 transport. RBridge uses SHA-2 (precisely SHA-256) for authentication, AES for encryption and timestamps for protection against replay attacks. Using a registry mechanism and UDP protocol, RBridge is able to connect directly to the peer from within NAT or firewall protected areas by using a special hole punching technique (thus requiring no configuration at the connecting routers). For this functionality, RBridge itself is able to act as a registry service for any associated pair of RBridges.