Firewall Setup

Is the new Netfilter/Iptables able to perform NAT firewalling for an entire subnet of servers each having separate IP addresses? Most of the docs I see out there are geared toward the home dsl crowd, people having 1 public IP and multiple internal computers. What I'm looking to do is a 1:1 NAT that will translate:

100.100.100.100 --> 192.168.0.100
100.100.100.101 --> 192.168.0.101
100.100.100.102 --> 192.168.0.102
100.100.100.103 --> 192.168.0.103
etc...

Also, would I have to set this server up as a router then?

 

 

 

 

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