There's an unexpected knock from a stranger at the front door. What to do?
1. Be cautious when opening the door. Do not blindly open the door to see who it is or what it is that they want.
2. Ignore the knock on the door . You may want to go about your normal business and NOT pretend that you are not home, but instead continue to do what you were doing, or even make some noise or turn on a light so that the person knows that someone IS home (possibly avoiding a burglary).
3. Look out a window first to see who it is - Avoid looking out a door window, but instead go and look through another window away from the door if possible. If you don't recognize them, you could shout through the door and ask what they want, or you could choose to ignore them.
4. Set the door chain. Be sure that your door chain is set well with LONG screws into the door frame to help resist a "push in." Crack open the door to speak to the person through the gap.