I use Visual Studio Code a ton. Whenever I've had an issue with SSH on code it's usually due to an issue in the SSHD Config.

Check the "output" tab in VSC, as it'll have helpful output there. Typically, in the SSHD Config file you'll need:

AllowAgentForwarding yes
AllowTcpForwarding yes
TCPKeepAlive yes

I would also *HIGHLY* suggest using key-authentication, just in general -- but most especially when using VSC with Remote SSH.

---
Thanks,
Alexander

Sent from my Google Pixel 7 Pro

On Sat, Nov 30, 2024, 14:51 Keith Smith via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
Hi,

I am having difficulty connecting remote using Visual Studio Code.

Desktop is running Kubuntu 24.04lts

Remote is a laptop running Win10 with VirtualBox installed and multiple
Ubuntu 24.04lts LAMP servers configured.  Only one is running.

I have 3 users

1) is the user installed during the Linux install.  It has Sudo
privileges.
2) A user that has SSH access that I can SSH into via the konsole on
Kubuntu. This is going to be a PHP-FPM virtual host owner.
3) A user that has SSH access that I can SSH into via the konsole on
Kubuntu. This is going to be a PHP-FPM virtual host owner.

I can SSH into the box remotely using SSH via the konsole on Kubuntu.

Users number 2 and three do not have sudo.

I can access the virtual hosts via FileZilla using user 2 and 3.

I can remote (VSC) into the VM using my sudo user that does not own any
vhosts.

I will be installing and configuring PHP-FPM so my virtual hosts will be
owned by a SSH user so I can do programming in real time / remote.

AI gave me a list of things to do and test which I did, such as

- Set /etc/ssh/sshd_config to PasswordAuthentication yes. Local and
remote are set to PasswordAuthentication yes

- sudo tail -f /var/log/syslog - nothing looks like it has anything to
do with VSC.

- ssh -vvv lamp@ip-address

which returns a bunch of stuff and then asks me for the password for
lamp@ip-address then connects the konsole w/o an issue:

debug3: kex_input_ext_info: extension publickey-hostbound@openssh.com
debug1: kex_ext_info_check_ver: publickey-hostbound@openssh.com=<0>
debug3: kex_input_ext_info: extension ping@openssh.com
debug1: kex_ext_info_check_ver: ping@openssh.com=<0>
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug3: kex_input_ext_info: extension server-sig-algs
debug1: kex_ext_info_client_parse:
server-sig-algs=<ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ssh-ed25519@openssh.com,sk-ecdsa-sha2-nistp256@openssh.com,rsa-sha2-512,rsa-sha2-256>
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
debug3: preferred
gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug3: ssh_get_authentication_socket_path: path
'/tmp/ssh-2bwrFHjD6Cmc/agent.1207'
debug1: get_agent_identities: bound agent to hostkey
debug1: get_agent_identities: ssh_fetch_identitylist: agent contains no
identities
debug1: Will attempt key: /home/keith/.ssh/id_rsa
debug1: Will attempt key: /home/keith/.ssh/id_ecdsa
debug1: Will attempt key: /home/keith/.ssh/id_ecdsa_sk
debug1: Will attempt key: /home/keith/.ssh/id_ed25519
debug1: Will attempt key: /home/keith/.ssh/id_ed25519_sk
debug1: Will attempt key: /home/keith/.ssh/id_xmss
debug1: Will attempt key: /home/keith/.ssh/id_dsa
debug2: pubkey_prepare: done
debug1: Trying private key: /home/keith/.ssh/id_rsa
debug3: no such identity: /home/keith/.ssh/id_rsa: No such file or
directory
debug1: Trying private key: /home/keith/.ssh/id_ecdsa
debug3: no such identity: /home/keith/.ssh/id_ecdsa: No such file or
directory
debug1: Trying private key: /home/keith/.ssh/id_ecdsa_sk
debug3: no such identity: /home/keith/.ssh/id_ecdsa_sk: No such file or
directory
debug1: Trying private key: /home/keith/.ssh/id_ed25519
debug3: no such identity: /home/keith/.ssh/id_ed25519: No such file or
directory
debug1: Trying private key: /home/keith/.ssh/id_ed25519_sk
debug3: no such identity: /home/keith/.ssh/id_ed25519_sk: No such file
or directory
debug1: Trying private key: /home/keith/.ssh/id_xmss
debug3: no such identity: /home/keith/.ssh/id_xmss: No such file or
directory
debug1: Trying private key: /home/keith/.ssh/id_dsa
debug3: no such identity: /home/keith/.ssh/id_dsa: No such file or
directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password

- - - - -

Any Thoughts Much Appreciated!!

Keith





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