How to block a trusted app from accessing the internet?

How to block a trusted app from accessing the internet?

Also where can I find the list of trusted applications in CFP?

There are 2 places you need to look. The firewall and D+. For the firewall open up Comodo and go to Firewall\Advanced\Network Security Policy. Then go to D+\Advanced\Computer Security Policy. Find the program in each that you want to block and edit it to block. You can also open up Comodo and click on the firewall tab then click on “define a new blocked application”.