1. Create a user devops_user and add them to a group devops_team

Create a group

Command:

sudo groupadd devops_team

Create a user and assign them to the group

sudo useradd -m -G devops_team devops_user

2. Set a password and grant sudo access.

Command:

sudo passwd devops_user

Grant sudo access to the user

Command:

sudo usermod -aG sudo devops_user

3.Restrict SSH login for certain users in /etc/ssh/sshd_config.

1. Edit the SSH configuration file:

command:

sudo nano /etc/ssh/sshd_config

2. Add or modify the following lines:

• To allow specific users:

  Command:

  AllowUsers devops_User

• Or, to deny specific users:

  Command:

  DenyUsers <username>

  3. Save the changes

• Press CTRL + O to save the file.

• Press CTRL + X to exit the Nano editor.

  4.Restart the SSH service

  To apply the changes, restart the SSH service using this command:

sudo systemctl restart ssh
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• Task 2 : BY Shubham Londhe

File & Directory Permissions

Task:

• • Create /devops_workspace and a file project_notes.txt.

    • Set permissions:

      • Owner can edit, group can read, others have no access.

    • Use ls -l to verify permissions.

Command:

• mkdir /devops_workspace

• touch /devops_workspace/project_notes.txt

• chmod 740 /devops_workspace/project_notes.txt

• ls -l

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