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2026-09-22
Why a VPN client on the router Configuring a VPN on each device is inconvenient, and TVs, game consoles and smart home devices often don’t support it at all. If the router becomes the VPN client, the tunnel can be …
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Why a VPN server on the router When you need to reach a NAS, cameras, a work computer via RDP, or smart home devices from home or while traveling, opening their ports to the Internet is dangerous. It’s safer to run …
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What is Keenetic Keenetic is a line of routers, access points and Wi-Fi extenders with its own operating system, KeeneticOS. The main thing about these devices is not the hardware specifications, but the system: it is …
Read more2026-09-22
A firewall, Fail2ban and CrowdSec respond to attacks that are already underway. An audit solves a different task: to find weak spots in the server configuration in advance — extra services, permissive SSH settings, …
Read more2026-09-22
Firewall — the first thing you set up on a new server, even before Fail2ban, CrowdSec, and auditing. Its job is simple: allow only the traffic needed by running services and drop everything else. The fewer open ports, …
Read more2026-09-22
Fail2ban protects each server individually: it only sees its own logs and doesn’t know that the same addresses attacked thousands of other machines a minute ago. CrowdSec solves the same problem — detect attacks …
Read more2026-09-22
Any server with SSH open gets scanned by bots within minutes after startup: they try common usernames and passwords, making thousands of attempts per hour. A firewall won’t help here — the SSH port must be open. …
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Hyper-V is Microsoft’s hypervisor. It is included in Windows Server as a role and in Windows 10 and 11 Pro and Enterprise editions as an optional component. Hyper-V is a Type-1 hypervisor: once the role is enabled …
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Xen — a Type 1 open-source hypervisor: it runs directly on the hardware, before any operating system. The project is developed under the Linux Foundation, the primary license is GPLv2. Current version — Xen 4.22 (30 July …
Read more2026-09-22
QEMU — a free emulator and virtualizer, distributed under the GPLv2 license. It does two different things. First, it can emulate an entire computer, including a CPU of another architecture: for example, run an ARM system …
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