Qubes OS configures the network through a unique architecture that emphasizes security and isolation. Unlike traditional operating systems, Qubes uses a microkernel design, where each application runs in its own virtual machine (VM), known as a "domain." These domains are isolated from each other, enhancing security.
For networking, Qubes OS typically employs a combination of virtual networks and firewalls to manage communication between these domains. Each domain can have its own network configuration, allowing for fine-grained control over network access and permissions.
For example, Qubes OS might configure a "trusted" network for domains that require internet access, while restricting "untrusted" domains to local communication only. This setup prevents a compromised domain from accessing sensitive data or systems.
In terms of cloud services, if you're looking for a similar level of isolation and security, you might consider services like Tencent Cloud's Virtual Private Cloud (VPC), which offers isolated network environments where you can define your own IP ranges, subnets, and routing tables. This allows for secure and customizable networking configurations, similar to how Qubes OS manages network settings across its isolated domains.