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I have a WNR3500L Netgear router. Our ISP is Surewest, and they have provided us 5 static IP addresses (66.x.x.106/110). I have setup the router to use 66.x.x.106 as a static IP, and have setup the DHCP subnet to be 10.1.10.2/100.

I have a desktop I use for development on 10.1.10.123 (outside DHCP range). Is it possible to set it up so all traffic to/from 66.x.x.107 (second static IP) goes to 10.1.10.123?

I think the proper term is NAT 1:1, but I can't seem to find this anywhere in the interface. Closest thing is "Static Routes".

(Port forwarding alone isn't enough as we'll have a few machines that all need port 80 for web development testing)

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A lot of people chose to replace the default operating system on routers like this with a more flexible, open version, like dd-wrt or openwrt. Here is an explanation for how to do it with dd-wrt for example:

http://www.dd-wrt.com/wiki/index.php/One-to-one_NAT

Find dd-wrt at: http://www.dd-wrt.com/
Find openwrt at: http://openwrt.org/

Good luck!

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Is there a way to do this without third party firmware? I understand there is some risks involved if done incorrectly, especially with Netgear routers. – Luke Jan 16 at 21:16
I don't think so, sadly. I have Netgear routers too but can't find an option unless I too miss something obvious. It should be fine to run dd-wrt on your router, just check the dd-wrt wiki and do as it says! And also prepare for how to back out of it if it locks up! – Mattias Ahnberg Jan 17 at 2:09
That's the thing... if I brick this I have to buy a $20 cable and take it apart. With other routers you don't have to do this. I was hoping "Static Routes" was what I was looking for. The safter route may be just to put a switch infront of the router. I could have sworn you could do this with the older Netgear routers. – Luke Jan 17 at 3:04
"Static Routes" just have to do with IP routing and nothing to do with NAT, so unfortunatelly not what you are looking for. :( Sorry, can't help you then. – Mattias Ahnberg Jan 17 at 6:41
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