(related: Ubuntu 22.04 SSH the RSA key isn't working since upgrading from 20.04 / SSH and Telnet timing out. Ubuntu 22.04 lts but the solution provided doesn't work)

Hi all,

ssh works from home. I can ssh to my laboratory, push to github.com+ssh, etc...

Nevertheless, I installed XUbuntu-22.04 on a new computer and ssh doesn't work for this machine.

After reading Ubuntu 22.04 SSH the RSA key isn't working since upgrading from 20.04 , I added HostKeyAlgorithms +ssh-rsa and PubkeyAcceptedKeyTypes +ssh-rsa to ~/.ssh/config and /etc/ssh/sshd_config , restarted ssh sudo systemctl restart sshd.service but it still doesn't work (see below).

I don't know much things about ssh so I have no clear idea of what I'm doing.

Here are a few outputs:

$ openssl version

OpenSSL 3.0.2 15 Mar 2022 (Library: OpenSSL 3.0.2 15 Mar 2022)



$ lsb_release  -a

No LSB modules are available.

Distributor ID: Ubuntu

Description:    Ubuntu 22.04.1 LTS

Release:    22.04

Codename:   jammy



$ cat .ssh/config 



Host my.host

    PubkeyAcceptedKeyTypes +ssh-rsa

    KexAlgorithms +diffie-hellman-group14-sha1

    HostKeyAlgorithms +ssh-rsa



$ tail /etc/ssh/sshd_config

HostKeyAlgorithms +ssh-rsa

PubkeyAcceptedKeyTypes +ssh-rsa





$ sudo systemctl restart sshd.service





 ssh -vvvv -X [email protected]

OpenSSH_8.9p1 Ubuntu-3, OpenSSL 3.0.2 15 Mar 2022

debug1: Reading configuration data /home/me/.ssh/config

debug1: /home/me/.ssh/config line 8: Applying options for my.host

debug3: kex names ok: [diffie-hellman-group14-sha1]

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: /etc/ssh/ssh_config line 19: include /etc/ssh/ssh_config.d/*.conf matched no files

debug1: /etc/ssh/ssh_config line 21: Applying options for *

debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/home/me/.ssh/known_hosts'

debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> '/home/me/.ssh/known_hosts2'

debug2: resolving "my.host" port 22

debug3: resolve_host: lookup my.host:22

debug3: ssh_connect_direct: entering

debug1: Connecting to my.host [IP] port 22.

debug3: set_sock_tos: set socket 3 IP_TOS 0x10

debug1: connect to address IP port 22: Connection timed out

ssh: connect to host my.host port 22: Connection timed out

what am I missing ?

EDIT

I also tried too add the values in sshd_config + ssh_config.

Telnet doesn't work too.

$ telnet my.host 22 

Trying IP...

telnet: Unable to connect to remote host: Connection timed out