Roman Sokolov

Disk speed on a VPS is quickly measured with dd (sequential write) and more accurately with fio (random-access IOPS), while network throughput is measured by speedtest-cli. Below are the exact commands and how to read the results.

Your own WireGuard VPN takes about 15 minutes to build: install the package, generate a key pair, describe the wg0 interface on the server, enable IP forwarding and add a client. Below is the full command sequence for Ubuntu/Debian on...

MySQL and the compatible MariaDB are the most widespread relational databases for web applications. The commands are almost identical, so this guide covers both. Below: installation on Ubuntu, hardening and creating a database for a site.

Password generator A cryptographically strong password is generated in your browser and never sent anywhere. Copy Regenerate Length: 20 A-Z a-z 0-9 !@#$%

The easiest way to restart Windows Server remotely is shutdown /r /t 0 in an RDP console or Restart-Computer -Force in PowerShell. To power it off, use shutdown /s or Stop-Computer. You can also reboot another server over the network...

You can change the RDP port on Windows Server in about five minutes: edit the PortNumber value in the registry, add a new firewall rule and restart the Remote Desktop service. Moving off the standard port 3389 sharply cuts the...

There are three ways to open a port in Windows Firewall: the graphical “Inbound Rules” wizard, the netsh advfirewall command, or the modern PowerShell command New-NetFirewallRule. On servers PowerShell is the most convenient — one line creates the rule. All...

Subnet calculator (CIDR) Enter an address with a prefix, for example 192.168.1.10/24 — you get the netmask, network address, broadcast and host range.