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I have commercial cable modem running Tomato 1.28 by shibby. It currently has a static IP address assigned via DHCP and works fine. I was assigned some additional routable IPs but they are in a different subnet.
**WAN**
addr:1.2.3.10 Bcast:1.2.3.255 Mask:255.255.255.0
**LAN**
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
**Additional WAN block info:**
Network: 2.2.3.120/29
Subnet Mask: 255.255.255.248
Start: 2.2.2.121
End: 2.2.2.126
I plan on assiging the new 5 addresses to 192.168.1.x hosts and then mapping them to the public addresses.
**LAN** **WAN**
192.168.1.121 -> 2.2.2.121
192.168.1.122 -> 2.2.2.122
...
192.168.1.126 -> 2.2.2.126
Should this be done with firewall rules or static routes?
Instructions from the ISP: ...you stated that you will be routing your additional block here is a basic example of what will need to be done to your equipment
Routing: I will need you to configure an IP from this block to an INTERNAL interface; I would suggest using the first usable IP of 2.2.2.121. This IP will then act as the gateway for the subnets traffic.
It currently has a static IP address assigned via DHCP and works fine what does this mean??? That means that although I have a static IP address, it is assigned via DHCP. Thanks for the info, i'll give the iproute2 option and see how things go. – None – 2015-06-10T12:36:53.603