Which NAT to choose?

Question

linux

Advise NAT similar to packetfence in terms of functionality from Russian documentation.
https://packetfence.org/about.html

Answer 1

1. NAT is a technology. There are programs that implement it.
2. The link provides a description of the network security system (NAC) - a product that is much larger than a simple firewall with NAT. Although NAT is there :)
3. Looking for security - learn the original language. No one will translate the documentation for you.