Re: TCP and UDP Port 0 - Should an ISP or ITP Block it?

["K. Scott Helms" <kscott.helms () gmail com>]

Nick,

Data on blocking inbound TCP or the kinds of gear that mistakenly
labels UDP fragments as DST port 0?

Scott Helms


On Wed, Aug 26, 2020 at 9:00 AM Nick Hilliard <nick () foobar org> wrote:
> K. Scott Helms wrote on 26/08/2020 13:55:
> > To be clear, UDP port 0 is not and probably shouldn't be blocked
> > because some network gear and reporting tools may mistake a fragmented
> > UDP PDU for port 0.  That's an implementation error, but one that may
> > be common enough to create issues for users.
> do you have data on this?
>
> Nick