Re: Telnet

From	Nicholas Geovanis <nickgeovanis@gmail.com>
Newsgroups	linux.debian.user
Subject	Re: Telnet
Date	2023-12-04 17:20 +0100
Message-ID	<HHjPP-b7ez-5@gated-at.bofh.it> (permalink)
References	(1 earlier) <HGGbL-aEsa-1@gated-at.bofh.it> <HGSwh-aM6O-1@gated-at.bofh.it> <HGXcB-aOYL-5@gated-at.bofh.it> <HGZR8-aQmS-7@gated-at.bofh.it> <HHcuZ-b17b-3@gated-at.bofh.it>
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On Mon, Dec 4, 2023, 2:23 AM Nicolas George <george@nsup.org> wrote:

> Charles Curley (12023-12-03):
> > True. None the less, there is at least one perfectly good use for
> > telnet: testing connections to servers.
>
> Wrong. The telnet client is not entirely transparent, as the telnet
> protocol defines an escape octet to introduce commands.
>

The show-stopper early-internet issue was that the protocol did not hash,
encrypt or secure the exchange of credentials at session start time.

If you want to test a network protocol, you should use a really
> transparent client. Traditionally people use netcat (nc), but it handles
> EOF approximatively.
>

There's a little chunk of perl in the Camel book that does what you want on
any port you want. In the 2nd edition it's pg. 349-351.

For that use, I strongly recommend socat.
>
> Regards,
>
> --
>   Nicolas George
>
>

Thread

Telnet William Torrez Corea <willitc9888@gmail.com> - 2023-12-02 17:00 +0100
  Re: Telnet Marco Moock <mm@dorfdsl.de> - 2023-12-02 17:10 +0100
    Re: Telnet Greg Wooledge <greg@wooledge.org> - 2023-12-02 17:20 +0100
    Re: Telnet William Torrez Corea <willitc9888@gmail.com> - 2023-12-02 17:40 +0100
  Re: Telnet Andy Smith <andy@strugglers.net> - 2023-12-02 23:00 +0100
    Re: Telnet Michel Verdier <mv524@free.fr> - 2023-12-03 12:10 +0100
      Re: Telnet Marco Moock <mm@dorfdsl.de> - 2023-12-03 17:10 +0100
        Re: Telnet Charles Curley <charlescurley@charlescurley.com> - 2023-12-03 20:00 +0100
          Re: Telnet Greg Wooledge <greg@wooledge.org> - 2023-12-03 20:10 +0100
            Re: Telnet Charles Curley <charlescurley@charlescurley.com> - 2023-12-03 20:30 +0100
              Re: Telnet debian-user@howorth.org.uk - 2023-12-03 21:30 +0100
                Re: Telnet Anssi Saari <anssi.saari@debian-user.mail.kapsi.fi> - 2023-12-04 11:30 +0100
                Re: Telnet gene heskett <gheskett@shentel.net> - 2023-12-04 12:40 +0100
                Re: Telnet debian-user@howorth.org.uk - 2023-12-04 17:20 +0100
                Re: Telnet Anssi Saari <anssi.saari@debian-user.mail.kapsi.fi> - 2023-12-05 11:20 +0100
            Re: Telnet Tim Woodall <debianuser@woodall.me.uk> - 2023-12-04 11:40 +0100
              Re: Firefox, was: Telnet Michael Kjörling <2695bd53d63c@ewoof.net> - 2023-12-04 13:10 +0100
                Re: Firefox, was: Telnet Tim Woodall <debianuser@woodall.me.uk> - 2023-12-04 15:30 +0100
          Re: Telnet Nicolas George <george@nsup.org> - 2023-12-04 09:30 +0100
            Re: Telnet Marco Moock <mm@dorfdsl.de> - 2023-12-04 17:30 +0100
              Re: Telnet Nicolas George <george@nsup.org> - 2023-12-04 17:40 +0100
          Re: Telnet Marco Moock <mm@dorfdsl.de> - 2023-12-04 09:30 +0100
            Re: Telnet Curt <curty@free.fr> - 2023-12-04 17:30 +0100
              Re: Telnet Nicolas George <george@nsup.org> - 2023-12-04 17:40 +0100
                Re: Telnet Curt <curty@free.fr> - 2023-12-04 17:50 +0100
                Re: Telnet Nicolas George <george@nsup.org> - 2023-12-04 18:00 +0100
                Re: Telnet <tomas@tuxteam.de> - 2023-12-04 18:40 +0100
                Re: Telnet Nicolas George <george@nsup.org> - 2023-12-04 20:10 +0100
                Re: Telnet Nicolas George <george@nsup.org> - 2023-12-04 20:30 +0100
                Re: Telnet <tomas@tuxteam.de> - 2023-12-05 06:10 +0100
                Re: Telnet Nicolas George <george@nsup.org> - 2023-12-05 08:50 +0100
                Re: Telnet tomas@tuxteam.de - 2023-12-04 20:30 +0100
          Re: Telnet Nicolas George <george@nsup.org> - 2023-12-04 09:30 +0100
            Re: Telnet Nicholas Geovanis <nickgeovanis@gmail.com> - 2023-12-04 17:20 +0100
            Look, ma no telnet [was: Telnet] <tomas@tuxteam.de> - 2023-12-04 20:00 +0100
              Re: Look, ma no telnet [was: Telnet] <tomas@tuxteam.de> - 2023-12-04 20:10 +0100
              Re: Look, ma no telnet [was: Telnet] Nicolas George <george@nsup.org> - 2023-12-04 20:10 +0100

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