Hi, We have a setup where our intranet machines have private IP addresses and we are connected to the internet through a Linux router which acts as a gateway also. One interface of gateway is directly connected to the ISP. This interface obviously has a public IP address. (eth1) 202.144.29.194 network address 202.144.29.192 mask 255.255.255.248 Another is connected to a internal hub to which all internal machines are connected. (eth0) 192.168.1.1 address This setup works fine. Now we have a requirement where we have to add one more machine with a public IP address. (202.144.29.195) I tried adding this machine to the hub and setting it's IP address. However, I could not get the routing to work fine. Our ISP has installed a unit on our side which has the same network address as the new m/c IP address. (IP 202.144.29.193). Will this kind of a routing work? My ISP told me that a public IP segment cannot be the same as a private IP segment. IS this true? In my case, eth0 is a segment which has 202.144.29.195 as well as 192.168 machines. Can I set the route as: 192.168.1.1 eth0 202.144.29.195 eth0 192.168.1.0 255.255.255.0 eth0 202.144.29.192 255.255.255.248 eth1 default 202.144.29.193 eth1 Is this not possible or is anything wrong in my setup? the other option is that I put another interface card on my gateway and give it another public IP address. In this case, packets coming in from the network will be divided into different segment depending on which IP address is the packet destined for. Does the network address of the 2 segments HAVE to be different in this case? Can I use the same network address /netmask or do I have to subnet to get packets correctly ? Please reply soon. Thanks, Sameer
