I have one windows server 2008 r2, and that server has 4 network interfaces (3 private, 1 internet connection).
I would like to share internet connection with other 3 networks.
Windows server firewall should make logs of data that is transfered.
It should not be possible to connect directly to private networks from internet.

How could I do it?

Edit:
I tried with NAT in RRAS, but it doesn't work.
Here is the configuration:
Server: IP private:192.168.0.1
IP public: xx.xx.xx.xx

client
IP:192.168.0.2
Default gateway: 192.168.0.1

Public and private interface added in NAT section of RRAS.