Re: Re: Telnetd Vulnerability Report

[Florian Weimer <fweimer () redhat com>]

* Marco Moock:

> On 24.02.2026 05:05 kf503bla () duck com kf503bla () duck com wrote:
>
> > Who uses telnet anyway? It's deprecated. Everyone uses ssh for any
> > kind of remote access.
>
> In certain situations telnet is still being used, because it is
> supported on a wide range of systems, regardless of key (exchange)
> algorithms or hash algorithms.

Part of that is that the industry has moved to a threat model where it
is considered more secure to use an unauthenticated, unencrypted channel
rather than one that uses (for example) an HMAC based on SHA-1 for
integrity protection.

Thanks,
Florian