[ih] when did APRANET -TIPs become known as -TACs

[Jorge Amodio]

TIP (Terminal Interface Processor) ~= TAC (Terminal Access Controller) ...

TAC were connected directly to DDN.

According to https://apps.dtic.mil/sti/tr/pdf/ADA164353.pdf (1985), TIP was
the "predecessor of TAC performing a similar function."

Cheers
Jorge


On Fri, Sep 26, 2025 at 12:34 PM Nigel Roberts via Internet-history <
internet-history at elists.isoc.org> wrote:

> Tickling an old thread, I was amused to come across this article.
>
> (Apologies if I'm recycling electrons here.)
>
> https://www.filfre.net/2017/12/games-on-the-net-before-the-web-part-2-mud/
>
> I have a strong suspicion that I may have been the author of the
> 'strange message to the Zork list' mentioned in this article.
>
> I don't suppose there are any archives of that so I could tell for sure,
> are there??
>
>
> On 20/04/2025 15:35, Nigel Roberts via Internet-history wrote:
> > And I still remember some of the the host numbers
> >
> > MIT-AI 134
> > MIT-DM 70  (Home of Dungeon/Zork, our inspiration for MUD)
> >
> > SU-AI was something in the twenties (23? anyone remember??)
> >
> >
> > Nigel
> >
> >
> > On 20/04/2025 00:41, John Day via Internet-history wrote:
> >> A site with more than one host connected to the IMP would regularly
> >> have a hyphen between the organization name and the name of the
> >> specific lab or whatever it was, e.g. MIT-Multics, MIT-AI.
> >>
> >> Sounds like you don’t have enough to do.
> >>
> >>> On Apr 19, 2025, at 18:33, Alexander McKenzie via
> >>> Internet-history<internet-history at elists.isoc.org> wrote:
> >>>
> >>> Ah, you are referring to Host names.  There wasm for example, a TIP
> >>> at BBN
> >>> known officially as BBN-TIP. The dash was part of the Host name, not
> >>> part
> >>> of the word "TIP".
> >>>
> >>> Cheers,
> >>> Alex McKenzie
> >>>
> >>> On Saturday, April 19, 2025 at 06:10:31 PM EDT, the keyboard of geoff
> >>> goodfellow via Internet-history<internet-history at elists.isoc.org>
> >>> wrote:
> >>>
> >>>
> >>> so BOTH the TIPs and TAC's had the -TIP and -TAC name notation, e.g.
> >>> viz.:
> >>>
> >>> 243,ACCAT-TIP,TIP,USER,NEW
> >>> in
> >>> ;[SRI-CSL]<GEOFF2>HSTNAM.TXT  (Kept by Geoff at SRI-CSL)
> >>> ;Last update: 4-Aug-82
> >>> as EXCERPTED from:
> >>>
> https://pdp-10.trailing-edge.com/bb-d868e-bm_tops20_v41_2020_dist_1of2/01/new-system/hstnam.txt.html
> >>>
> >>> &
> >>>
> https://pdp-10.trailing-edge.com/BB-H137C-BM/06/new-system/hstnam.txt.html
> >>>
> >>>
> >>> HOST ACCAT-TAC, 2/35,USER,TAC,C30,[NELC-TIP]
> >>> ; Last updated: MRC 2/1/83
> >>> as EXCERPTED from:
> >>>
> https://github.com/ttkzw/hosts.txt/blob/master/pub/hosts/19830201/HOSTS.TXT
> >>>
> >>>
> >>> and some even had both (which must have been during the -TIP to -TAC
> >>> naming
> >>> transition), viz.:
> >>> 10.2.0.35      accat-tac nelc-tip
> >>> 10.2.0.31      cca-tac cca-tip
> >>> as EXCERPTED from:
> >>>
> https://www.tuhs.org/cgi-bin/utree.pl?file=4.2BSD/usr/src/etc/htable/hosts
> >>>
> >>>
> >>> geoff
> >>>
> >>>
> >>> On Sat, Apr 19, 2025 at 2:35 PM Alexander McKenzie via
> >>> Internet-history <
> >>> internet-history at elists.isoc.org> wrote:
> >>>
> >>>> They became TACs when the management of ARPAnet switched from DARPA to
> >>> DCA
> >>>> and login control via user passwords was implemented.  The management
> >>> shift
> >>>> happened in mid-1976 and the login control somewhat later. I've
> >>>> never seen
> >>>> the dash notation before and I don't think that is anything other
> >>>> than a
> >>>> typo.
> >>>>
> >>>> Cheers,
> >>>> Alex McKenzie
> >>>>
> >>>> On Saturday, April 19, 2025 at 05:19:44 PM EDT, the keyboard of geoff
> >>>> goodfellow via Internet-history<internet-history at elists.isoc.org>
> >>>> wrote:
> >>>>
> >>>>
> >>>> and WHY the dash -TIP to -TAC name change?
> >>>>
> >>>> --
> >>>> Geoff.Goodfellow at iconia.com
> >>>> living as The Truth is True
> >>>> --
> >>>> Internet-history mailing list
> >>>> Internet-history at elists.isoc.org
> >>>> https://elists.isoc.org/mailman/listinfo/internet-history
> >>>> --
> >>>> Internet-history mailing list
> >>>> Internet-history at elists.isoc.org
> >>>> https://elists.isoc.org/mailman/listinfo/internet-history
> >>>>
> >>> --
> >>> Geoff.Goodfellow at iconia.com
> >>> living as The Truth is True
> >>> --
> >>> Internet-history mailing list
> >>> Internet-history at elists.isoc.org
> >>> https://elists.isoc.org/mailman/listinfo/internet-history
> >>> --
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> >
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