VanLUG Email Archive
> On Tue, 6 Oct 1998, Ted Powell wrote:
>
> > Am I incorrect in thinking that NAT can do arbitrary translations?
>
> NAT indeed can: with ipfilter in NetBSD, for example, you can
> translate to a range of addresses:
>
> map ppp0 10.0.0.0/8 -> 209.123.45.0/24
>
> However, I've never heard the term `masquerading' to refer to doing
> a translation to only one address. In fact I've never seen the term
> `masquerading' at all outside of the Linux community. I'm open to
> counter-examples, however.
But will NAT do the type of mapping whereby the traffic from multiple
hosts is made to appear to come from the translating host, and
the reverse traffic is disambiguated on its port numbers? If not, then
it's not a true superset of masquerading.
Also, how does it deal with tricky protocols like FTP? What's its equivalent of
the ``helper modules''?