Subject: Re: IP Masq digression (was: LocalTalk)
To: Charles Sebold <pretender@macstore.com>
From: Henry B. Hotz <hotz@jpl.nasa.gov>
List: port-mac68k
Date: 09/17/1997 09:51:06
At 10:19 AM 9/17/97, Charles Sebold wrote:
>I was talking to a linux/x86 guru a couple of weeks ago who uses IP-Masq,
>and when I explained to him what we do with NAT, he told me that they are
>not quite the same thing. Apparently, IP-Masq doesn't necessarily redirect
>the ports; when I send an outgoing connection to the internet through an
>IP-Masq box, it (he thought) uses the same port on the linux box as the
>originating machine had used. This would mean, among other things, some
>really hairy redirection tables in the kernel (not that the user ever sees
>them) and some proxies getting used instead of simply reassigning the
>packet and resending it the way NAT does. This is all transparent to the
What does it do if two client machines originate a connection on the same
port at the same time? It can't map them both to the same outbound port.
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