> The full list of articles is in [llms.txt](https://docs.f3cloud.com/llms.txt). Every page has a Markdown version: add .md to its address. This page as Markdown: [https://docs.f3cloud.com/en/index.md](https://docs.f3cloud.com/en/index.md).

# F3 Cloud Knowledge Base

The F3 Cloud knowledge base with guides to the client area, ordering and managing VPS, setting up VPN and proxies, installing software and technical how-tos.

## More about F3 Cloud

The [F3 Cloud](https://f3cloud.com/en?from=docs) project was created based on the real needs of clients seeking flexible and reliable hosting solutions. In today's market, not all providers are ready to offer a truly adaptive approach. We, on the other hand, prioritise the individual tasks and goals of our users in order to provide the most comfortable and effective experience.

[F3 Cloud](https://f3cloud.com/en?from=docs) – a hosting provider that constantly expands its functionality, introduces innovations, refines its customer service and strengthens its reputation as a reliable partner in the world of server technologies. Our mission – to make hosting management simpler, more efficient and more convenient for you.

## Let's get started

This knowledge base brings together clear and practical materials designed to make it easier to get started with F3 Cloud services and more. Here you will find a guide to setting up your client area, useful tips for optimising your infrastructure and solutions that let you manage Linux or Windows servers efficiently.

### Client area

- [Registering in the F3 Cloud client area](https://docs.f3cloud.com/en/client-area/registration.md)
- [Ordering a virtual server on F3 Cloud](https://docs.f3cloud.com/en/client-area/order-vps.md)
- [Reinstalling the operating system on a server](https://docs.f3cloud.com/en/client-area/reinstall-os.md)
- [Changing the virtual server password](https://docs.f3cloud.com/en/client-area/reset-root-password.md)
- [Managing your VPS in the F3 Cloud client area](https://docs.f3cloud.com/en/client-area/server-management.md)
- [FAQ, or frequently asked questions about F3 Cloud hosting](https://docs.f3cloud.com/en/client-area/frequently-asked-questions.md)
- [Free F3 Cloud trial server](https://docs.f3cloud.com/en/client-area/trial-server.md)
- [F3 Cloud referral programme](https://docs.f3cloud.com/en/client-area/referral-programme.md)

### Virtual servers (VPS)

- [What types of cloud servers are there](https://docs.f3cloud.com/en/vps/cloud-server-types/index.md)
- [What a VPS is in plain words and how it differs from hosting](https://docs.f3cloud.com/en/vps/cloud-server-types/vps-hosting.md)
- [What a dedicated server is and how it differs from a VPS](https://docs.f3cloud.com/en/vps/cloud-server-types/dedicated-server.md)
- [Connecting to a server with the Termius SSH client](https://docs.f3cloud.com/en/vps/termius-connection.md)
- [How to connect to a Windows VPS via Remote Desktop (RDP)](https://docs.f3cloud.com/en/vps/windows-rdp-access.md)
- [The best SSH clients: comparing PuTTY, Termius, MobaXterm and others](https://docs.f3cloud.com/en/vps/best-ssh-clients.md)
- [SFTP – how to transfer files to a server and create an SFTP-only user](https://docs.f3cloud.com/en/vps/sftp-file-transfer.md)
- [How to point a domain to a VPS – DNS records A, AAAA, CNAME, MX and TXT](https://docs.f3cloud.com/en/vps/domain-to-vps.md)
- [Traceroute to a server and checking packet loss – WinMTR, MTR and Speedtest](https://docs.f3cloud.com/en/vps/network-troubleshooting-traceroute.md)
- [How to protect a server (VPS/VDS) from unauthorised access](https://docs.f3cloud.com/en/vps/security.md)
- [SSH key login and disabling password login in Linux](https://docs.f3cloud.com/en/vps/security/ssh-keys.md)
- [Setting up the UFW and firewalld firewall on a Linux VPS](https://docs.f3cloud.com/en/vps/security/firewall.md)
- [Automatic security updates in Linux (unattended-upgrades)](https://docs.f3cloud.com/en/vps/security/automatic-updates.md)
- [How to change the SSH port in Ubuntu, Debian and AlmaLinux](https://docs.f3cloud.com/en/vps/security/change-ssh-port.md)
- [Protection against password guessing with fail2ban](https://docs.f3cloud.com/en/vps/security/fail2ban.md)
- [Backing up a VPS, its files and databases](https://docs.f3cloud.com/en/vps/security/backups.md)

### Websites and web server

- [Installing Nginx with PHP-FPM and SSL on Ubuntu and Debian](https://docs.f3cloud.com/en/web/nginx-installation.md)
- [Let's Encrypt SSL for Nginx and Apache with Certbot](https://docs.f3cloud.com/en/web/lets-encrypt-ssl-nginx-apache.md)
- [Nginx errors 502, 504, 403 and 500 – what they mean and how to fix them](https://docs.f3cloud.com/en/web/site-errors-502-504-403-500.md)
- [How to install Keitaro on a server – tracker guide](https://docs.f3cloud.com/en/web/keitaro-setup.md)

### AI and agents

- [Installing OpenClaw (ClawdBot) on a VPS](https://docs.f3cloud.com/en/ai/openclaw-installation.md)
- [Hermes Agent on a VPS – installation, connecting a model and a Telegram bot](https://docs.f3cloud.com/en/ai/hermes-agent.md)
- [OpenCode on a VPS – installing the AI agent, free models and working in the browser](https://docs.f3cloud.com/en/ai/opencode-on-vps.md)
- [Claude Code on a VPS – installation, login and working through the app](https://docs.f3cloud.com/en/ai/claude-code-on-vps.md)
- [Installing DeepSeek R1 on a VPS with Ollama – choosing the model and server](https://docs.f3cloud.com/en/ai/deepseek-installation.md)

### Self-hosted services in Docker

- [Installing Docker and Docker Compose on a VPS – Ubuntu and Debian](https://docs.f3cloud.com/en/docker/docker-installation.md)
- [Nextcloud on a VPS – your own file cloud with Nextcloud All-in-One](https://docs.f3cloud.com/en/docker/nextcloud-installation.md)
- [Immich on a VPS – your own Google Photos for photos and videos](https://docs.f3cloud.com/en/docker/immich-installation.md)
- [Gitea on a VPS – your own Git server in Docker, SSH, backups and updates](https://docs.f3cloud.com/en/docker/gitea-installation.md)
- [Installing n8n on a VPS in Docker with HTTPS via Caddy](https://docs.f3cloud.com/en/docker/n8n-installation.md)
- [Uptime Kuma – monitoring websites and servers on a VPS](https://docs.f3cloud.com/en/docker/uptime-kuma.md)
- [OpenTelemetry on a VPS – collecting traces and metrics with the OpenTelemetry Collector](https://docs.f3cloud.com/en/docker/opentelemetry-collector.md)
- [Telegram bot on a VPS – running it on Python, autostart with systemd and common errors](https://docs.f3cloud.com/en/docker/telegram-bot-vps.md)

### Game servers

- [Minecraft server on a VPS – installing Paper, autostart and backups](https://docs.f3cloud.com/en/games/minecraft-server.md)
- [Minecraft server cores and plugins – Paper, Purpur, Fabric, Forge and installing plugins](https://docs.f3cloud.com/en/games/minecraft-cores-plugins.md)
- [Project Zomboid server on a VPS – installing with SteamCMD, autostart and backups](https://docs.f3cloud.com/en/games/project-zomboid-server.md)
- [TeamSpeak server on a VPS – installation, admin key, ports and backups](https://docs.f3cloud.com/en/games/teamspeak-server.md)

### Network and diagnostics

- [Checking network speed on a Linux server with Speedtest](https://docs.f3cloud.com/en/network/speedtest-guide.md)
- [iperf3 – how to test the bandwidth between servers](https://docs.f3cloud.com/en/network/iperf3-guide.md)
- [tcpdump in Linux – how to inspect network traffic on a server](https://docs.f3cloud.com/en/network/tcpdump-linux.md)
- [The nslookup and dig commands – how to check a domain's DNS records](https://docs.f3cloud.com/en/network/nslookup-dig.md)
- [The nc (netcat) command in Linux – checking ports, transferring files and debugging the network](https://docs.f3cloud.com/en/network/nc-command-guide.md)
- [Installing MikroTik CHR (RouterOS) on a VPS](https://docs.f3cloud.com/en/network/mikrotik-router-os-install.md)
- [How to test disk speed and IOPS in Linux with fio](https://docs.f3cloud.com/en/network/iops-performance-test.md)
- [UnixBench on Linux: server performance testing](https://docs.f3cloud.com/en/network/unixbench-guide.md)
- [SMTP, POP3 and IMAP protocols: a complete guide](https://docs.f3cloud.com/en/network/smtp-pop3-imap-protocols.md)

### Linux for beginners

- [Users in Linux – how to create, delete, list them and grant sudo](https://docs.f3cloud.com/en/linux/linux-users.md)
- [Usermod in Linux: Managing users](https://docs.f3cloud.com/en/linux/usermod-command-guide.md)
- [File permissions in Linux – the chmod and chown commands](https://docs.f3cloud.com/en/linux/linux-permissions.md)
- [Processes and load in Linux – the top, htop, ps and kill commands](https://docs.f3cloud.com/en/linux/linux-processes.md)
- [Services in Linux – systemctl commands and your own systemd service](https://docs.f3cloud.com/en/linux/systemd-services.md)
- [Cron in Linux – how to run tasks on a schedule](https://docs.f3cloud.com/en/linux/cron-linux.md)
- [The rsync command in Linux – copying, syncing and moving files to another server](https://docs.f3cloud.com/en/linux/rsync-linux.md)
- [The cp command in Linux: Copying files and directories](https://docs.f3cloud.com/en/linux/cp-command-tutorial.md)
- [Logs in Linux – journalctl, /var/log and where to look for errors on a server](https://docs.f3cloud.com/en/linux/linux-logs.md)
- [The screen command in Linux, background tasks and hotkeys](https://docs.f3cloud.com/en/linux/screen-linux-tool.md)
- [Swap file in Linux – how to create and configure it on a VPS](https://docs.f3cloud.com/en/linux/swap-linux.md)
- [REMOTE HOST IDENTIFICATION HAS CHANGED error in SSH – why it appears and how to fix it](https://docs.f3cloud.com/en/linux/remote-host-identification-changed.md)

### Windows Server

- [.NET Framework 3.5: Installing on Windows 10 and Windows Server](https://docs.f3cloud.com/en/windows/net-framework-windows.md)
- [How to allow file downloads in Internet Explorer on Windows Server](https://docs.f3cloud.com/en/windows/internet-explorer-file-downloads.md)

### VPN setup

- [What VLESS and Reality are – how anti-censorship protocols work](https://docs.f3cloud.com/en/vpn-guide/vless-reality-overview.md)
- [Installing Amnezia VPN on your own server – AmneziaWG 3.1 and XRay](https://docs.f3cloud.com/en/vpn-guide/setup-amnezia.md)
- [Installing WireGuard on a VPS in Docker with the wg-easy panel](https://docs.f3cloud.com/en/vpn-guide/wireguard-vpn-tutorial.md)
- [Installing OpenVPN on a VPS with one command](https://docs.f3cloud.com/en/vpn-guide/openvpn-server-setup.md)
- [Installing Outline VPN on your own server – Outline Manager and access keys](https://docs.f3cloud.com/en/vpn-guide/outline-vpn.md)
- [Installing Marzban on a VPS and setting up VLESS with Xray](https://docs.f3cloud.com/en/vpn-guide/marzban-installation.md)
- [Installing 3X-UI on a VPS and setting up VLESS Reality](https://docs.f3cloud.com/en/vpn-guide/3x-ui-panel-guide.md)
- [Installing Remnawave on a VPS with a node and VLESS Reality](https://docs.f3cloud.com/en/vpn-guide/remnawave-installation.md)
- [Moving from Marzban to Remnawave – migrating users and subscriptions](https://docs.f3cloud.com/en/vpn-guide/marzban-to-remnawave.md)
- [Self-steal for VLESS Reality – camouflage as your own website](https://docs.f3cloud.com/en/vpn-guide/reality-self-steal.md)
- [Setting up VLESS + TLS + XHTTP in 3X-UI with your own domain](https://docs.f3cloud.com/en/vpn-guide/setup-vless-xhttp.md)
- [VPN on your own server does not connect – finding the cause step by step](https://docs.f3cloud.com/en/vpn-guide/vpn-not-connecting.md)

### Proxy setup

- [Your own HTTP(S) and SOCKS5 proxy on a VPS with 3proxy](https://docs.f3cloud.com/en/proxy-guide/proxy-server-configuration.md)
- [Your own MTProto proxy for Telegram on a VPS – installing mtg with FakeTLS](https://docs.f3cloud.com/en/proxy-guide/mtproto-proxy-telegram.md)

> **Note.**
>
> **Tip:** If you were unable to find the information you need, contact our support team in any way convenient for you. We are always available and ready to help!