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

Nick Hilliard nick at foobar.org
Wed Aug 26 13:00:21 UTC 2020


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




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