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KVM · Platform

Frabs for Virtualizor

On a Virtualizor server, Frabs reads the KVM guests through libvirt and the containers through vzlist, then watches each one's interface.

Virtualizor

Protects
KVM virtual machines, and OpenVZ containers where you run them
Recognised by
The virtualizor package
Watches
viif<n>
Panel links
Open in Virtualizor

How it works

How Frabs works on Virtualizor

  1. 01

    Install

    One command as root on the server. It reads the setup without changing anything.

  2. 02

    Recognise Virtualizor

    The virtualizor package tells the sensor which platform it is on.

  3. 03

    Find every guest

    A read-only libvirt connection: virsh list and domiflist for each VM's interfaces. vzlist, where the server runs containers.

  4. 04

    You confirm

    You review what it will watch. Protection starts within 30 seconds of confirming.

Networking

What it watches, and what it leaves alone

viif<n>

Virtualizor's naming for VM interfaces, for example viif3

Bridges. The bridge Virtualizor uses for VMs, such as viifbr0. Bridges with no guests are left alone.

How traffic is counted. A Frabs-only nftables table on each guest interface. Your own firewall rules and the host's interfaces are not touched, and nothing changes until a rule or a person acts.

An example plan

PlatformVirtualizor
Watchesviif0, …
Leaves aloneBridges with no guests
Changes madeNone until you act

Get started

Install on Virtualizor

On the server, as root

curl -fsSL https://install.frabs.net | sh -s -- --token frb_...
  • Install on each Virtualizor slave server
  • libvirt is opened read-only; nothing in Virtualizor is changed
  • VM pages link straight to the VM: Open in Virtualizor
  • Read the Install Guide

Questions

Is anything installed inside the VMs?
No. The sensor runs on the server itself, never inside a customer's guest.
Does Frabs change my bridges or firewall?
No. It counts traffic in its own nftables table on each guest interface, and only acts when your rules or your team say so.
What happens if I add a bridge or move guests?
The server's page shows that the layout changed. Run frabs reconnect, review the updated plan and confirm.
What if the sensor stops?
Its network changes are removed and traffic carries on, unless you chose fail-closed.