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windows server 2008 nat routing

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linux-howto

http://serverfault.com – 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. 8.8.8.0/24 [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 8.8.8.1, 8.8.8.20, 8.8.8.30 and 8.8.8.40. Is there a way to configure Windows Server 2008 (RRAS role) so that the 192.168.20.0/24 network would be NATted to 8.8.8.2 ()