Connect to ssh-1 server from recent Ubuntu

[Jeffrey Walton]

On Mon, Jun 30, 2025 at 3:05 AM Ian Bruntlett <ian.bruntlett at gmail.com> wrote:
>
> On Mon, 30 Jun 2025 at 05:16, Jeffrey Walton <noloader at gmail.com> wrote:
>>
>> The package is present in Ubuntu 22.04, but I don't know about Ubuntu 24:
>>
>>     $ apt-cache search openssh-client-ssh1
>>     openssh-client-ssh1 - secure shell (SSH) client for legacy SSH1 protocol
>
>
> Ubuntu 24.04.2 LTS x86_64 has it. I don't have it installed. Synaptic states this:
>
> secure shell (SSH) client for legacy SSH1 protocol
> This is the portable version of OpenSSH, a free implementation of
> the Secure Shell protocol as specified by the IETF secsh working
> group.
>
> Ssh (Secure Shell) is a program for logging into a remote machine
> and for executing commands on a remote machine.
> It provides secure encrypted communications between two untrusted
> hosts over an insecure network. X11 connections and arbitrary TCP/IP
> ports can also be forwarded over the secure channel.
> It can be used to provide applications with a secure communication
> channel.

Well, according to Canonical, the package is available on Ubuntu 24:
<https://packages.ubuntu.com/search?keywords=openssh-client-ssh1&searchon=names&suite=noble&section=all>.

Maybe the person who needs SSH1 has to enable [universe]. Also see
<https://www.geeksforgeeks.org/linux-unix/how-to-enable-universe-repository-in-ubuntu/>.

Jeff