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Weird Networking configuration Question

Question asked by Amir Arama on Aug 22, 2018
Latest reply on Aug 22, 2018 by Amir Arama


it might be dummy question, just thinking out loud, maybe someone knows a way of making this work.


I have a FW with Lan interface (let's say eth0) with address: (note the subnet)

this network includes servers, PCs, Printers etc.. now i'm required to do segmentation inside this network.

i want to keep this address range (not use 172.16./10.x.x.x.).

i thought of how can i accomplish this step at a time, without taking down the whole network to maintanance.

my quesion is as follows:

if i will create new interface (eth2) with address and i will move some servers to this network.

1. is it supported to create interface with address that included/conflicted with other interface?

2.i need that the PCs and other Servers/devices still located on network to keep communicating with the servers moved to network. so i think how it might work is that FW should know to reply to arp request to servers on, and to respond on behalf (proxy arp) and then move the packet to int, and packets to expect from will go to the int. and also on the opposite direction that arp request to for example from within will respond by the fw and let the communication occur.


is anyone knows a way to make this happen ?