If you need to delete an existing rule:
- run Dr.Web;
- open the Firewall component;
- click on the "Applications" tab;
- select the application for which you want to change the rule;
- in the list of rules visible in the newly appeared window of the "Rules for IP addresses and ports" section, tap the line that you want to delete, and drag it in any direction. The line will switch to the choice "Edit" or "Delete";
- click on "Delete" to remove the rule or on "Edit" to replace it with a new one.