Stonesoft Corporation, a provider of integrated network security and business continuity, has received a U.S. patent for its MultiLink technology.

The technology is an integral component of the StoneGate High Availability Firewall and Virtual Private Network (VPN), the company says. MultiLink manages failover, load balancing and routing between multiple Internet Service Providers for reliable connectivity and fastest throughput for VPN and Internet traffic.

The recent U.S. patent covers MultiLink’s algorithm-based route selection method for distributing Interntet Protocol traffic. In particular, it ensures a transparent and fault-tolerant VPN tunnel over the Internet, as well as always-on Internet connections for corporate use and Web-enabled applications.

“Intermittent reliability has been a major barrier preventing widespread use of the Internet for real-time applications,” said Ilkka Hiidenheimo, chief technology officer of Stonesoft. “MultiLink provides the fault tolerance that enterprises require, while removing much of the cost and complexity that has made ISP multi-homing and route optimization prohibitive to many organizations.”