Hypothetical Dual NAT Question

[Pitcock Family]

Good Morning,

I was wondering if a dual NAT infrastructure would work or buy you any extra
security.

For Example:

Valid Internet addresses
        |
        |
Router with NAT
172.16.x.x internal
        |
        |
FW-1 with DMZ 172.17.x.x
192.16.x.x internal networks NAT

Any comments would be greatly appreciated.

Rich

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