Vyatta is Linux Router and Firewall

Vyatta Software combines the features, performance and reliability of an enterprise-class router, firewall and VPN with the cost savings and flexibility of open-source solutions.

This Software can be used as cheap alternative router and firewall compared to if we buy special hardware for firewall/router.
Myself not yet tried this software fully. Only I install in virtualbox. Review herein after I try this software.

You can download vyatta at this.
Tell me if you have try this software.