Re: Private port numbers?

["Christopher L. Morrow" <chris () UU NET>]

On Wed, 13 Aug 2003, Iljitsch van Beijnum wrote:
> It's not the same thing. RFC 1918 and martian addresses aren't supposed
> to be present on the internet, but aren't automatically harmful. Having
> services that are explicitly labeled for internal use be visible to the
> rest of the world is potentially very harmful.

I think I'm missing something, how would a locally managed firewall (local
to the end station) not permit this same scenario? (without the added
confusion of private/public ports)