Proxmox: Step-by-Step From Install to Secure Remote Access

Proxmox VE has become one of the most powerful open-source virtualization platforms for homelabs and enterprises. This guide takes you from bare-metal installation to running virtual machines, containers, backups, clustering, and secure remote access via Cloudflare Zero Trust.

Whether you’re a new homelabber or an experienced sysadmin, this guide covers everything you need.

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1. Preparing for Proxmox Installation

System Requirements

• 64-bit CPU (Intel VT-x or AMD-V required)
• 8GB RAM minimum (16GB+ recommended)
• 32GB+ SSD or NVMe (Proxmox performs best on SSD/NVMe)
• Optional: additional disks for ZFS RAID, LXC storage, backups

Download Proxmox VE ISO

Get the latest ISO: https://www.proxmox.com/en/downloads

Use Proxmox VE Installer ISO.

Prepare USB Installer

Use any tool such as:

• BalenaEtcher
• Ventoy
• Rufus (DD mode recommended)

Flash the ISO to your USB.

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2. Installing Proxmox VE

1. Boot from the USB
2. Select Install Proxmox VE
3. Accept license
4. Choose filesystem (recommendations):
   • ZFS RAID1 if you have two disks (best reliability)
   • ext4 or xfs for single-disk setups
5. Set:
   • Country & keyboard
   • Strong root password
   • Email (used for notifications)
6. Configure network:
   • Pick your main NIC
   • Give Proxmox a static IP
   • Example: 192.168.1.100

Click Install.

After installation, remove USB and reboot.

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3. First Login to Proxmox Web Interface

Open your browser:

https://YOUR-PROXMOX-IP:8006

Example: https://192.168.1.100:8006

Login as:

• Username: root
• Password: the one you set

Ignore the SSL warning (you can fix it later).

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4. Post-Install Configuration

Change default update sources (no subscription warning)

Run:

nano /etc/apt/sources.list.d/pve-enterprise.list

Disable the enterprise repo by adding #.

Create the no-subscription repo:

nano /etc/apt/sources.list.d/pve-no-subscription.list

Add:

deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription

Update system:

apt update && apt dist-upgrade -y

5. Fix Proxmox Repository Warning Popup

Optional but recommended:

wget https://raw.githubusercontent.com/foundObjects/pve-nag-buster/master/pve-nag-screen.sh
bash pve-nag-screen.sh install

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 6. Networking Setup (Important for VMs & Containers)

Proxmox uses a Linux bridge (vmbr0) to connect VMs to your network.

Default config looks like:

auto vmbr0
iface vmbr0 inet static
    address 192.168.1.100/24
    gateway 192.168.1.1
    bridge-ports enp3s0
    bridge-stp off
    bridge-fd 0

This allows VMs and containers to behave like devices on your LAN.

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7. Creating a Storage Layout

By default Proxmox includes:

• local → ISO & snippets
• local-lvm → VM disks

You can add more storage types:

• Directory storage (best for containers)
• ZFS pools (best for redundancy)
• NFS shares (NAS backup)
• USB disks (backup to external drive)

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 8. Creating Your First Virtual Machine (VM)

Steps:

1. Click Create VM
2. Set VM name
3. Upload an ISO (Ubuntu, Windows, etc.)
4. Choose storage (local-lvm)
5. Assign:
   • CPU cores
   • RAM
   • Disk size
6. Select network: vmbr0
7. Finish and start VM

Install OS normally.

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9. Creating LXC Containers (Lightweight Virtualization)

LXC containers are extremely lightweight compared to VMs.

To create one:

1. Download LXC template (e.g., Ubuntu, Debian)
2. Click Create CT
3. Assign:
   • Hostname
   • Password
   • Resources
4. Use vmbr0 for networking
5. Start container — extremely fast boot

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10. Adding Proxmox Backups

Proxmox Built-In Backups:

• Destination: local, NFS, or external
• Modes: snapshot or stop mode
• Scheduled backups supported

Recommended:

• Daily backups of important VMs
• Weekly offsite backups (Cloudflare R2, Google Drive, Backblaze B2 via scripts)

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11. Proxmox Snapshots & Clones

Snapshots:

• Capture VM state instantly
• Useful before updates or risky changes

Clones:

• Full clone → new independent VM
• Linked clone → shared base, fast and small

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12. Optional: PCI Passthrough (GPU, NIC, USB)

For GPU passthrough:

1. Enable IOMMU
2. Edit GRUB
3. Add device drivers
4. Pass GPU to VM (e.g., Windows gaming VM or AI workloads)

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13. Exposing Proxmox Securely with Cloudflare Tunnel

⚠️ Never expose Proxmox directly to the internet.

Instead, use Cloudflare Zero Trust:

Steps:

1. Install Cloudflare Tunnel on any machine:

cloudflared tunnel login
cloudflared tunnel create proxmox

2. Create route:

cloudflared tunnel route dns proxmox proxmox.yourdomain.com

3. Add ingress rule:

url: http://YOUR-PROXMOX-IP:8006
No rule

4. In Cloudflare Zero Trust:

• Access → Applications → Add Application → Self-hosted
• URL: https://proxmox.yourdomain.com
• Assign policies (email/PIN/device)

5. Add One-Time PIN or Passkey authentication

Now your Proxmox is fully protected behind Zero Trust with no public exposure.

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14. Proxmox Useful Tools & Enhancements

Recommended add-ons:

• Proxmox Dark Theme
• Proxmox VE Helper Scripts
• Proxmox Firewall rules
• Monitoring with Grafana
• ZFS auto-scrub schedules

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15. Final Thoughts

With this full guide, you now have:

•  Installed Proxmox
•  Configured networking & storage
•  Created VMs and containers
•  Enabled backups and snapshots
•  Secured access with Cloudflare Zero Trust
•  Optional GPU/NIC passthrough
•  Ready-to-use homelab or production setup!