Private port numbers?
Stephen J. Wilcox
steve at telecomplete.co.uk
Thu Aug 14 09:31:48 UTC 2003
On Wed, 13 Aug 2003, Crist Clark wrote:
>
> Iljitsch van Beijnum wrote:
> >
> > Be damned if you filter, be damned if you don't. Nice choice.
> >
> > I think it's time that we set aside a range of port numbers for private
> > use. That makes all those services that have no business escaping out
> > in the open extremely easy to filter, while at the same time not
> > impacting any legitimate users.
>
> Cool. So if you use private ports, you'll be totally protected from the
> Internet nasties (and the Internet protected from your broken or malicious
> traffic) in the same way RFC1918 addressing does the exact same thing now
> at the network layer.
Erm? Unless your nasty uses TCP (requiring two-way) you still get the same
potential to spread worms etc as you do on 1918 currently
> I'm sure everyone will filter private ports just as effectively as RFC1918
> and martian addresses are filtered at borders now.
Whoa people filter these things, news to me!
Steve
>
> Can't wait to read the draft and RFC. Rock on.
>
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