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How to Configure a Server for Two Internet Gateways?

May 1, 2009

Let's say I have a LAN using the 192.168.x.x private IP range, and I want to use two separate router/gateways (call them A and B) to connect the LAN to two separate Internet connections with two separate public IP addresses. All machines will use A (hi-speed, dynamic IP) as their default gateway. There will be inbound HTTP requests on B (low-speed, static IP) which will be forwarded to a server on the LAN. With this setup, will the server send its responses via B, where they came from (which I assume will be necessary for it to work), or via A, its default? If it will send via A, and that will not work, can I set up two private IPs with different default gateways on the one machine somehow to make it work?

1 comment… read it below or add one

HS May 1, 2009 at 8:05 am

Again I have to bring up the Linksys RV042. I attempted this exercise myself a year before the RV042 was available. It has dual WAN inputs so you can load balance or fail over between DSL connections.

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