Add 'Ubuntu-Primary-Settings'

Ubuntu-Primary-Settings

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+# Ubuntu System Setup Guide
+
+## 1. Update and Upgrade Ubuntu System
+To ensure your system is up to date, run the following commands:
+```bash
+sudo apt update && sudo apt upgrade -y
+```
+This will update the package list and upgrade all installed packages.
+
+---
+
+## 2. Create a New Sudo User
+Creating a new sudo user helps maintain security instead of using the root account.
+
+### **Step 1: Add a New User**
+Replace `username` with your desired username:
+```bash
+sudo adduser username
+```
+You will be prompted to enter a password and user details.
+
+### **Step 2: Grant Sudo Privileges**
+```bash
+sudo usermod -aG sudo username
+```
+This adds the user to the `sudo` group, allowing administrative access.
+
+### **Step 3: Verify the User Has Sudo Access**
+Switch to the new user:
+```bash
+su - username
+```
+Run a test command:
+```bash
+sudo whoami
+```
+If successful, it should return `root`.
+
+---
+
+## 3. Disable Root SSH Access
+To enhance security, disable SSH access for the root user.
+
+### **Step 1: Edit the SSH Configuration File**
+```bash
+sudo nano /etc/ssh/sshd_config
+```
+
+### **Step 2: Find and Modify the Following Line**
+Change:
+```bash
+PermitRootLogin yes
+```
+To:
+```bash
+PermitRootLogin no
+```
+
+### **Step 3: Save and Exit**
+Press `CTRL+X`, then `Y`, and hit `ENTER` to save the file.
+
+### **Step 4: Restart the SSH Service**
+```bash
+sudo systemctl restart ssh
+```
+
+### **Step 5: Verify Root SSH is Disabled**
+Try logging in as root via SSH:
+```bash
+ssh root@your-server-ip
+```
+It should now be blocked.
+
+---
+
+## 4. Additional Security Measures
+- Use **SSH key authentication** instead of passwords.
+- Change the **default SSH port** to a non-standard port.
+- Use **firewalls** like `ufw` to allow only necessary connections.
+
+---
+
+## **Done! 🎉**
+Your Ubuntu system is now **updated, secure, and configured with a sudo user**.
+