For the Private Cyberspace 20.12 release, the default network gateway software used in Virtual Private Mesh (VPM) is based on OpenWrt.
The VPM Network Gateway operates as a component of Dynamic Alias's unified security providing substantially , traditional interface and zone based network security (e.g. stateful inspection firewall, intrusion prevention system etc.) can also be used as an additional layer of protection.
Some open sourced network gateways with firewall security inlcudes: