I have a working adsl line with 8 static public IP addresses. I currently connect via a Netgear DG834 modem/router, and this works great. The WAN side is manually allocated with one of my IP addresses.
I'd like to use several of my public IP addresses to expose various devices to the Internet. My plan was to replace the DG834 with an ADSL modem, connected to a switch. The switch would then feed several different DMZ devices, and a NAT router which would then feed all the desktop machines.
So I've installed a D-Link DSL-300 modem, a Netgear FS 608 switch, and a Netgear RP 614 NAT router, connected in that order.
The modem works fine - I've configured it with my ISP username and password, and it connects just fine.
The switch also works fine - a PC connected to the switch, set with one of my public IP adresses, is visible to the Internet just fine.
The router is proving to be a *major* headache. When I try to allocate it with the settings I think it should have, it rejects them. More details:
Say one of my public IP addresses is 18.104.22.168. My ISP has informed my that my subnet is 255.255.255.248, and my gateway is 22.214.171.124. When I try to input these settings for the WAN side of the router, it objects because the gateway is not on the same subnet as the WAN IP address I'm setting it to.
This is very odd, because when I look at my current router, which is running on the same static IP address, it seems to have dynamically obtained the subnet and gateway information that my ISP provided.
What am I doing wrong? Any help much appreciated.