[ih] Fwd: Question - reference source for formal decommissioning of ARPANET in 1990?

[Andrew G. Malis]

Dan,

I managed the NCP->TCP transition on the ARPANET that started on 1/1/83. I
wrote the IMP code that enforced the transition by adding a filter to drop
NCP packets, which was managed on a host-by-host basis. We had an official
list from DARPA of hosts that were approved to continue using NCP. I spent
New Year's Day in the NOC, turning off NCP for unapproved hosts, and I
fielded calls from unhappy site managers as their NCP traffic stopped
flowing (as they had been warned many times). I told them the process of
how to contact DARPA to at least temporarily get on the approved list, and
I turned the filters off and back on as directed by DARPA. Sadly, I don't
recall when we finished the process of turning on the NCP filter for all
hosts.

Cheers,
Andy


On Fri, Dec 4, 2020 at 7:31 PM Dan Lynch via Internet-history <
internet-history at elists.isoc.org> wrote:

> I only use real data😂🙀
>
> Dan
>
> Cell 650-776-7313
>
> > On Dec 4, 2020, at 4:26 PM, Dave Crocker <dhc at dcrocker.net> wrote:
> >
> > On 12/4/2020 4:22 PM, Dan Lynch via Internet-history wrote:
> >> It amazes me to hear there were sites still running NCP in the late 80s
> in Texas.
> >
> > A reference like that, about Texas, affords such a target-rich
> opportunity, I'm overwhelmed.
> >
> > d/
> >
> > --
> > Dave Crocker
> > Brandenburg InternetWorking
> > bbiw.net
>
> --
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