How to set permissions in Tigervnc in Debian system

This article will guide you on how to safely configure Tigervnc permissions in Debian systems.

1. Install Tigervnc

First, make sure Tigervnc is installed:

sudo apt update
sudo apt install tigervnc-standalone-server tigervnc-common

2. Create a dedicated VNC user

For enhanced security, it is recommended to create a dedicated user for VNC access only:

sudo adduser vncuser
sudo passwd vncuser

3. Configure VNC server

Edit the VNC server configuration file (usually located at ~/.vnc/xstartup ):

sudo nano /home/vncuser/.vnc/xstartup

Depending on your desktop environment, replace the file content with one of the following:

• GNOME:

#!/bin/sh
unset SESSION_MANAGER
exec /etc/X11/xinit/xinitrc

• KDE:

#!/bin/sh
unset SESSION_MANAGER
exec startkde

• XFCE:

#!/bin/sh
unset SESSION_MANAGER
exec startxfce4

Save and give script execution permissions:

chmod x /home/vncuser/.vnc/xstartup

4. Set VNC password

Use the vncpasswd command to set the VNC password:

vncpasswd

Follow the prompts to enter and confirm your password.

5. Start the VNC server

Use the following command to start the VNC server ( :1 indicates the display number, which can adjust the resolution and color depth):

vncserver:1 -geometry 1920x1080 -depth 24

6. Configure a firewall (if any)

If firewall is enabled, allow access to VNC ports (default 5901):

sudo ufw allows 5901

7. Connect to VNC server

Use the VNC client to connect to the server, and the address format is服务器IP:1 (for example: 192.168.1.100:1 ).

8. Set up automatic start (optional)

To enable the VNC server to start with the system, create the systemd service file:

sudo nano /etc/systemd/system/vncserver@.service

Copy the following to the file:

[Unit]
Description=Start TigerVNC server at startup
After=syslog.target network.target

[Service]
Type=forking
User=vncuser
Group=vncuser
WorkingDirectory=/home/vncuser

PIDFile=/home/vncuser/.vnc/%H:%i.pid
ExecStartPre=-/usr/bin/vncserver -kill :%i > /dev/null 2>&1
ExecStart=/usr/bin/vncserver -depth 24 -geometry 1920x1080 :%i
ExecStop=/usr/bin/vncserver -kill :%i

[Install]
WantedBy=multi-user.target

Enable and start the service:

sudo systemctl daemon-reload
sudo systemctl enable vncserver@1.service
sudo systemctl start vncserver@1.service

After completing the above steps, you should be able to use Tigervnc safely on your Debian system. Please adjust the resolution and color depth parameters according to your actual situation.

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