First of all, thanks for helping out. Please do not assume that I will not accept answer because I will accept answer(s) by the end of the day. I usually get all of my answers and then accept one or more once the problem is solved.
To your question, these are netgear routers with NAT. Let me know if you need any additional info. Thanks.
How do I disable NAT on a router? When I look through the netgear router's setup page, there are two router functions, "Run router as gateway" and "Run router as router". What is the difference between the two? And by choosing "Run router as router", will that disable NAT?
Will it work if I:1) disable NAT on all three routers, R1, R2, and R32 connect WAN port of R1 to R3 switch port3) connect WAN port of R2 to R3 switch port4) connect ISA server to R3 switch port
I will have all of the external traffic to the Internet route to the proxy server. Will the proxy server do NAT on incoming traffic? Will this work?