My ISP has given me a router with the following information..
The router is provided by the ISP and the gateway/routerIP is already preset inside.
If I were to add a firewall behind the router as per above, and i would like to place my servers behind the firewall BUT
- no NAT is to be set on the firewall
- the servers are to have the public IPs allocated by the ISP
Does that means i would need to further subnet the allocate public IP range given by the ISP into 2 different network
1 - for network between firewall external interface and ISP router internal interface (18.104.22.168)
2 - for network between firewall internal interface and the rest of the servers.
and i will have a total of 4 ips (for network and broadcast) wasted
Is my understanding correct ?