Add a new user to existing Ubuntu Server
Login with sudo-user, then:
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sudo adduser <UserName> - Enter password as stated in command line
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Make user sudo-user
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sudo adduser <UserName> sudo- To verify type
id <UserName>. To the left under „user groups“ it should state „sudo„
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Source: https://www.cyberciti.biz/faq/how-to-create-a-sudo-user-on-ubuntu-linux-server/
Allow user to login via ssh
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- Open the ssh config file using vim:
vim /etc/ssh/sshd_config - Scroll to button until you find AllowUsers
- Add username, separate multiple usernames by space:
AllowUsers user1 user2 user3 - Reload ssh:
service sshd restart
- Open the ssh config file using vim:
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Source: https://kifarunix.com/allow-deny-specific-users-to-login-via-ssh-on-ubuntu-18-04/