To NAT or not to NAT?

[Ju Kong Fui]

Hi all,

Since the range of private network addr is already officially documented as
192.168.x.x, 10.x.x.x, and so on, it is no longer a secret to external
hackers.

Does NAT really help to hide/secure the internal network? Or it is just
purely a method to help easing the pain of having not enough of public IP
addr?

Your opinion appreciated.

Thanks.
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