ISP Routed addressing to loopback adapter

PiotrIr

Hi,
Just wander if somebody could tell me if following solution is possible and if so if this is good practice.

I’ve got from ISP routed public IP addressing and in normal scenario would use router and firewall so:

ISP ---> 83.78.23.0/32 ---> Router 1 ---> 95.67.43.0/29 ---> Router 2 –NAT (firewall) ---> 192.168.20.0/24

Now is it possible to use following solution with only one router? Or maybe there is much better way to use one router in the scenario?

ISP ---> 83.78.23.0/32 --->Router1 Int1 --->95.67.43.0/29 ---> Router1 loopback int –NAT (firewall) ---> Router1 int2 ---> 192.168.20.0/24

I hope this is clear if not please let me know so I will try to explain it better. I just wonder if this solution has any disadvantage and if somebody could give me example configuration.

Thank you
Piotr

TheNewITGuy

Nah dont need the loopback, the 95.67.43.0/29 is routed to you over the 83.78.23.0/30 anyhow.

PiotrIr

TheNewITGuy,
Thank you for your reply.
I’m not sure what do you mean, if it I don’t need loopback so which IP address I will set on which interface to get NAT from pool 95.67.43.0 to server from network 192.168.20.0?