sshd

sshd(man) secure shell daemon

• apt install openssh-server
• Configuration file: /etc/ssh/sshd_config

Commands

• systemctl start sshd
• systemctl restart sshd
• systemctl status sshd or systemctl status ssh
• systemctl enable ssh

• service ssh start

• sshd -T, Extended test mode.
• sshd -t, test mode.

sshd -t
(no output in configuration is right)

Activities

• Activate SSH server on macOS: sudo systemsetup -setremotelogin on
• Sftp configuration
• Configure OpenSSH to reuse ssh connections
• apt install openssh-server

Related terms

• journalctl -r | grep sshd
• ssh-copy-id
• launchctl stop com.openssh.sshd
• launchctl start com.openssh.sshd

See also

• sshd, sshd logs, sshd -t, sshd -T, sshd_config, sftp, SSH_CLIENT, sshd changelog
• /etc/ssh/sshd_config(man): AuthenticationMethods, PubkeyAuthentication, PasswordAuthentication, PermitRootLogin, MaxStartups, sshd_config, AllowUsers, Hardening
• OpenSSH (changelog): /etc/ssh/sshd_config | /etc/ssh/ssh_config | ~/.ssh/ | openSSL | sshd logs | sftp | scp | authorized_keys | ssh-keygen | ssh-keyscan | ssh-add | ssh-agent | ssh | Ssh -O stop | ssh-copy-id | CheckHostIP | UseKeychain, OpenSSF, ~/.ssh/authorized_keys

https://linux.die.net/man/5/sshd_config