[1] Nginx Server Setup - VirtualBox Installation and Putty Connection

# How to Set Up a Linux Virtual Environment for Testing Using VirtualBox on Windows 10

Setting up a Linux virtual environment can be helpful for testing purposes. This guide walks you through setting up a virtual machine on Windows 10 using VirtualBox.

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1. VirtualBox Download

To begin, download VirtualBox.

- Go to VirtualBox Downloads. - Download the installer for your OS (choose "Windows hosts" for Windows 10).

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After downloading, proceed with the installation by following the prompts.

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2. RHEL (Red Hat Enterprise Linux) OS Download

Since CentOS reached its End of Life (EOL), it's recommended to use RHEL.

- Visit RHEL Downloads (version 9.4 as of 2024.11.02). - To use RHEL for free, register for an Individual Developer Subscription. There is no cost for registration.

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3. VirtualBox - Setting Up a RHEL Virtual Machine

1. Create a New Machine - Open VirtualBox and click "New.", Set the storage path.

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2. Set Up VM Password - Create a password for your VM account during the installation setup.

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3. Allocate Resources to VM - Allocate resources based on your computer's specs. For example, assign 4 CPU cores and 8GB of RAM, and set the disk size to 20GB.

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4. Software Selection - Select the necessary software. If a GUI is not needed, deselect GUI-related packages to save resources.

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5. Connection Check - Confirm that the virtual machine is correctly set up by starting it and verifying the console output.

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4. Connect to the VM Using Putty

- To connect to the VM, follow the steps below:

4-1. Verify VM Settings in VirtualBox

``` 1. Open VirtualBox, select the VM, and go to Settings. 2. Navigate to the Network tab, and set Adapter 1 to NAT. 3. Set up port forwarding rules:

- Name: Enter a name (e.g., SSH). - Host Port: Set an unused port on your host (e.g., 9999). - Guest Port: Enter 22 (default SSH port).

Example: "putty -(9999 port)> VM -(22 port)> Linux"

```

4-2. Internal VM Configuration

- Download and start the SSH server

``` sudo yum install -y openssh-server # Install SSH server sudo systemctl start sshd # Start SSH server sudo systemctl enable sshd # Enable SSH to start on boot ```

- Firewall configuration ``` sudo firewall-cmd --permanent --add-port=22/tcp sudo firewall-cmd --reload

```

- Modify SSH configuration ``` sudo vi /etc/ssh/sshd_config

Edit the file as follows (In VI, find the term with '/term', press 'a' to edit, then press ESC and type ':w' to save)

#PermitRootLogin $value -> PermitRootLogin yes (necessary if the ID is root) #PasswordAuthentication yes -> PasswordAuthentication yes (Remove # and change to yes)

Restart SSH to apply changes: sudo systemctl restart sshd

``` - Connection Verification

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Related Links

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Recommended Link

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