Vyatta is a Linux-based router

Why use Vyatta?

Vyatta is a Linux-based router, firewall and VPN solution that can help you affordably build enterprise-class networks by delivering the performance, reliability and features of proprietary networking devices in an open-source package.

Vyatta can help you:

• Affordably scale large BGP implementations
• Attach your small office to the Internet
• Keep your network safe with a stateful-inspection firewall
• Securely connect remote offices with VPN
• Scale from DSL to 10-Gbps with a single software package
• Avoid costly proprietary networking upgrades
• Run virtualized networking environments in Xen and VMware
• Add networking and security to blade servers in your data center
• Offer network-based managed security services
• Add network redundancy regardless of vendor equipment
• Build your own best-of-breed Branch office solution

http://www.vyatta.org/getting-started/why-use

http://www.vyatta.org/forum/index.php?sid=281c16c12dca13021332db0e5e9c59db