I have a server running Windows Server 2008 R2 with one Intel physical interface supporting VLANs. There are basically four tagged VLANs: three local ones (192.168.20.0/24 [tag: 20], 192.168.30.0/24 [tag: 30], 192.168.40.0/24 [tag: 40]) and a public one (e.g. 22.214.171.124/24 [tag: 1]) provided by ISP. ISP VLAN lets me use four different public IP-addresses for which different content-filtering rules are applied by the ISP, let these be 126.96.36.199, 188.8.131.52, 184.108.40.206 and 220.127.116.11.
Is there a way to configure Windows Server 2008 (RRAS role) so that the 192.168.20.0/24 network would be NATted to 18.104.22.168, 192.168.30.0/24 to 22.214.171.124 and so on?
P.S. I think the problem is the same if stated as follows: there are four network interfaces (three private networks and a public one), is there a way to set up NAT in a way that different networks would have access to the global net through different IP-addresses on the public interface?