On 09 Jul 2024 at 01:56a, Shurato pondered and said...

How would I have a linux telnet server allow authentication from another app (my BBS) without it requiring a logon? I've got linux instructions for ele, but the telnet service requires a seperate login before
accessing the system.

There have been extensions that have done this in the past.
The MIT Kerberos distribution used to ship with modified telnet
client and server programs that would do krb auth instead of
manual username/password entry. Those are long gone, though.
RFC 1409 specifies an authentication extension (likely used by
kerberized telnet, now that I think about it...), and there was
another extension to provide auth via DSA certificates.

None of those are what you're looking for though, I expect.
The BSD telnet client has a `-a` option to negotiating
"autologin"; I suspect it uses something like the BSD rcmd
stuff used by rlogin etc. It's not clear from looking at
the source code whether it's even still supported in any
meaningful way.

You're probably better off trying to set up rlogin or some
kind of ssh wrapper, instead.

--- Mystic BBS v1.12 A48 (Linux/64)
* Origin: Agency BBS | Dunedin, New Zealand | agency.bbs.nz (21:1/101)

* In a message originally to Shurato, tenser said:

On 09 Jul 2024 at 01:56a, Shurato pondered and said...

How would I have a linux telnet server allow authentication from

another

app (my BBS) without it requiring a logon? I've got linux

instructions

for ele, but the telnet service requires a seperate login before accessing the system.

There have been extensions that have done this in the past. The MIT
Kerberos distribution used to ship with modified telnet client
and server programs that would do krb auth instead of manual username/password entry. Those are long gone, though. RFC 1409
specifies an authentication extension (likely used by kerberized
telnet, now that I think about it...), and there was another
extension to provide auth via DSA certificates.

None of those are what you're looking for though, I expect. The BSD
telnet client has a `-a` option to negotiating "autologin";
I suspect it uses something like the BSD rcmd stuff used by rlogin
etc. It's not clear from looking at the source code whether it's
even still supported in any meaningful way.

You're probably better off trying to set up rlogin or some kind of
ssh wrapper, instead.

I was able to use mystic and then start the bbs software, so that worked
pretty well.

--
Shurato, Sysop Shurato's Heavenly Sphere (ssh, telnet, pop3, ftp,nntp,
,wss) (Ports 22,23,110,21,119,8080) (ssh login 'bbs' pass 'shsbbs').


---
* Origin: Shurato's Heavenly Sphere telnet://shsbbs.net (21:2/148)

How would I have a linux telnet server allow authentication from another app (my BBS) without it requiring a logon? I've got linux instructions for ele, but the telnet service requires a seperate login before accessing the system.

--
Shurato, Sysop Shurato's Heavenly Sphere (ssh, telnet, pop3, ftp,nntp,
,wss) (Ports 22,23,110,21,119,8080) (ssh login 'bbs' pass 'shsbbs').


*** THE READER V4.50 [freeware]
---
* Origin: Shurato's Heavenly Sphere telnet://shsbbs.net (21:2/148)

El 8/7/24 a las 22:56, Shurato escribió:

How would I have a linux telnet server allow authentication from another app (my BBS) without it requiring a logon? I've got linux instructions for ele, but the telnet service requires a seperate login before accessing the system.

--
Shurato, Sysop Shurato's Heavenly Sphere (ssh, telnet, pop3, ftp,nntp,
,wss) (Ports 22,23,110,21,119,8080) (ssh login 'bbs' pass 'shsbbs').

*** THE READER V4.50 [freeware]
---
* Origin: Shurato's Heavenly Sphere telnet://shsbbs.net (21:2/148)

you can use pam_imap or some another similar module that can autheticate
with sbbs

https://pam-imap.sourceforge.net/
--- SBBSecho 3.20-Linux
* Origin: Dock Sud BBS - bbs.docksud.com.ar - Argentina (21:2/151)