[JoeyP]

The leash will only work for the symptom
She will still likely pull on it and bark

What you need to do is get someone patient to come over
have them ring the bell
Tell her to STAY
YOU go to the door and start to open it
As SOON as she starts jumping and barking
The door gets closed and you walk away

a minute later have your friend do it again
tell her STAY
and repeat and repeat until she gets the idea
Hey.... they ain't coming in until I stop jumping
You'll be surprised how quit they get the idea