how to block VNC and teamviewer application

[im]

i have block teamviewer.com and realvnc.com website is block but application still running. Please advice

[PhilipDAth]

If you block access to *.teamviewer.com I expect it will no longer work.

For the VNC cloud service block access to *.vnc.com.

VNC itself uses tcp/5900, so you could block that as well.

[im]

my meraki can't use *.teamviewer.com in content filtering i have block port 5900, it did't work

[PhilipDAth]

Create an outbound firewall rule (deny).