Does the SSH connection work?
On your mini PC is there only Gladys or did you install something else?
Which port did you set to access Gladys — 80
No, via SSH with PuTTY it doesn’t work. Network error. Software caused connection abort
Only Gladys and its containers are running, and Ubuntu 22.04.1 LTS, as in the config of
I haven’t changed the
SSH is not enabled/installed on Ubuntu Desktop.
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I don’t use PuTTY to connect; I only use the terminal in Ubuntu, personally.
I had installed it.
ssh -V
returns:
OpenSSH_8.9p1 Ubuntu -3, Open SSL 3.0.2 15 Mar 2022
sudo system status ssh
returns
ssh.service - OpenBSD Secure Shell server
Loaded: loaded…
Active: active (running) since Tue 2023-01-24 15:50:14 CET (the time at which I think I restarted Ubuntu)…
and further down:
janv. 24 15:50:14 lenovo sshd[834]: Server listening on 0.0.0.0 port 22,
janv. 24 15:50:14 lenovo sshd[834]: Server listening on :: port 22,
janv. 24 20:49:19 lenovo sshd[38511]: Connection reset by
I installed
All good, I solved my problem! 
I set the mini-PC’s network interface to manual and entered Gladys’s IP address.
Thanks everyone for your help and the time you spent on it. 
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I didn’t have to do that. What is it related to?
Do I need to add it to the tutorial?
Do you know why you had to switch to manual?
A configuration problem with their router could be
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This could indicate a DHCP problem (e.g., the ISP box and a router are in conflict).
I disabled the Livebox DHCP in the early afternoon.
I set the DHCP on the mini-PC → Gladys inaccessible
I set it back to manual IP configuration → Gladys accessible.
I sometimes had trouble too back when I used a router in addition to my modem.
I would sometimes get caught out by the timing: a change in routing / IP address / DHCP sometimes takes several hours to take effect.