Setting Remote Desktop access password in KVM

I am using KVM with libvirt for virtualization. I can access remote desktop of my vm's without any password. I want to set a Password for each vm access. I am using vinagre : for remote desktop access.

Thanks in advance.

In libvirt:

1. Add Hardware
2. Select Graphics
3. Select VNC Server
4. Set Password

You can edit your domain xml directly like this:

# virsh edit <your-domain-name>

edit the element and add attribute passwd like this:

<graphics type='vnc' passwd='foo'>

You can get more options from the article libvirt domain xml format