x11vnc ou UltraVNC : une bonne alternative sous Linux ?

x11vnc, alternative Linux à UltraVNC

Mis à jour le 23 octobre 2026

Notre avis

x11vnc is a solid replacement for the server side of UltraVNC if you are moving from Windows to Linux. It handles the core job of exposing your X11 desktop to VNC clients reliably. However, it is not a drop-in swap for the entire UltraVNC suite. While it serves the desktop well, it lacks the integrated client, file transfer tools, and polished GUI configuration that UltraVNC provides. It is best suited for users who need a lightweight, scriptable VNC server on Linux and are willing to use a separate client like TigerVNC or RealVNC Viewer for the connection side.

Couverture fonctionnelle65%

Licence: GPL-2.0
Prix: Gratuit
Dernière version: 0.9.17
Note: —

Installer x11vnc

Ce qui fonctionne pareil

Both implement the standard VNC protocol for remote desktop access
Both support password authentication for basic security
Both can run as background services or daemons
Both allow multiple clients to connect simultaneously

Ce qui change

x11vnc is a server-only tool; UltraVNC includes a full-featured client
x11vnc lacks built-in file transfer capabilities present in UltraVNC
x11vnc configuration is primarily command-line based, whereas UltraVNC has a GUI
x11vnc does not natively handle multi-monitor scaling as intuitively as UltraVNC

Ouvrir vos fichiers UltraVNC

x11vnc does not use the same configuration file format as UltraVNC. There is no direct import mechanism for UltraVNC settings. You will need to manually recreate your server settings, such as port numbers and password hashes, using x11vnc command-line arguments or its own configuration file. No proprietary data files are involved in the VNC protocol itself, so no data migration is required for the screen sharing functionality.

Passer de UltraVNC à x11vnc, étape par étape

Install x11vnc via your distribution's package manager
Generate a VNC password using the vncpasswd utility
Configure x11vnc to start on boot using a systemd service or init script
Update firewall rules to allow incoming VNC traffic on port 5900
Test the connection using a standalone VNC client on another machine

Fonctionnalités clés de x11vnc

Prend en charge la version 3.8 du protocole VNC standard
Peut partager l’affichage X existant ou créer un nouvel affichage virtuel
Configuré via des arguments en ligne de commande ou des fichiers de configuration
Prend en charge l’authentification par mot de passe et le chiffrement TLS
Utilisation faible des ressources adaptée aux anciens matériels
Fonctionne avec la plupart des environnements de bureau basés sur X11
Peut être exécuté comme service pour un accès persistant
Prend en charge plusieurs clients se connectant simultanément

Installer x11vnc sous Linux

Ubuntu / Mintsudo apt install x11vnc

Debiansudo apt install x11vnc

Fedorasudo dnf install x11vnc

Arch / Manjarosudo pacman -S x11vnc

openSUSEsudo zypper install x11vnc

Questions fréquentes

Can I use the UltraVNC client to connect to x11vnc?

Yes, because both use the standard VNC protocol. Any standard VNC client, including UltraVNC, can connect to an x11vnc server.

Does x11vnc support encryption out of the box?

It supports TLS encryption, but it is not enabled by default. You must configure certificates and command-line flags to enable secure connections.

Is x11vnc suitable for occasional remote support?

It is functional but less user-friendly for occasional users than UltraVNC. You will need to know basic command-line usage or set up a simple script to launch it.