SA,
What wonderful little guys we have, loving, caring, protective, FurEver
It's apparent that he's identified his territory (your dwelling), and
his Pack as well (you and yours). But beyond the companionship, Dogs
are "tools" as well. It's very important to me, that both mine are
VERY alert about who's approaching, and are persistent in that "alarm".
Can you teach him the difference...
between a Policeman with a Gun, and a Burglar with a Gun ?
Or the UPS Guy with a package, and someone who is using a
package to gain access to your residence ?
If you're really uncomfortable with his actions, then try to change
him, but, remember the value of his protectiveness.
Have a good Day !

S.W.