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

[Jack Haverty]

TACs were TIPs with code added to enable the use of TCP.  That was one 
of the steps needed before the 1/1/1983 deadline for converting the 
ARPANET to only support TCP.   So it happened well before then. IIRC, 
Bob Hinden wrote the TCP code and added it to the TIP, so he may 
remember more.

There were some other necessary changes as well.  E.g., the "TIP Login" 
mechanisms (name/password to connect to a TIP) had to be converted into 
TACACS (TAC Access Control System).   That may have happened later, in 
preparation for the split of the ARPANET to adapt it to become part DDN.

I'm not sure about the -TIP vs -TAC naming.  It may have been just to 
keep track as individual TIPs were converted into TACs.

Jack Haverty

On 4/19/25 14:18, the keyboard of geoff goodfellow via Internet-history 
wrote:
> and WHY the dash -TIP to -TAC name change?
>

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