[ih] Fw: Nit-picking an origin story

[Steve Crocker]

Vint,

The terminal fake host generated and received messages in accordance with
1822.  We hadn't yet defined the host-host (later called NCP) and Telnet
protocols.  The TIP implemented the Telnet and NCP protocols, so it was a
lot more code.  And the TIP had a second bank of memory for the extra
software and the buffer space to support 63 terminals.

Steve


On Sat, Aug 16, 2025 at 4:04 PM Vint Cerf via Internet-history <
internet-history at elists.isoc.org> wrote:

> the fake host was a software construct in the IMPs that looked like 1822
> hosts to the IMP internal software. There were four fake hosts as I recall.
> I used them to generate traffic, to receive traffic, to trace specially
> marked packets that flowed through the network (at least, I think I
> remember that is how the traces were captured and sent to a destination for
> logging)...you could attach a terminal to the imp and use a fake host
> through which you could interact with a server at the other end - probably
> that is how the so-called Terminal IMP (TIP) was built but for many
> terminals, not just one.
>
>
>
> On Sat, Aug 16, 2025 at 3:46 PM Dave Crocker via Internet-history <
> internet-history at elists.isoc.org> wrote:
>
> > On 8/16/2025 12:06 PM, Alexander McKenzie via Internet-history wrote:
> > > TTY Fake Host at UCLA
> >
> > Apologies but I don't know the details of 'fake host'.  Was this a
> > virtual construct inside the IMP or a special device attached to it?
> >
> > If the latter, then I'd think that -- for the purposes of historical
> > milestones -- it qualifies as sufficient to demonstrate end to end, long
> > haul networking.
> >
> > d/
> >
> > --
> > Dave Crocker
> >
> > Brandenburg InternetWorking
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