The PFSense gateway vmware appliance can run pfblocker, a firewall that has a whitelisting mode where the white list is a list of DNS names. But this is not interactive, you have to manually type the allowed domain names.
Is there any whitelisting firewall in the vmware marketplace, that is interactive ie prompts you to add a new site when an attempt is made to connect to that site? And that is also a gateway, or can be set up as a gateway?
Linux or BSD based ideally. The idea is to run the interactive firewall in one VM and browser windows in separate VM's.