Vyatta is a Debian-based software router and firewall that has a familar, hardware-router-like syntax. It’s rather nice.
This morning, VyOS was being discussed in the AusNOG mailing lists. From Wikipedia:
After Brocade Communications stopped development of the Vyatta Core Edition of the Vyatta Routing software, a small group of enthusiasts took the last Community Edition, and worked on building an Open Source version to live on in place of the end of life VC.
Seems there are some who aren’t too happy about the Brocade buyout. Regardless, it won’t be changing anything here, for the time being.
With the official Vyatta site now relegated to a redirect, the best documentation and information source seems to be the Unofficial Vyatta Wiki.