Are your dogs friendly to your guests?

My dog is, when someone is at the door I can hear the barking of my dog, which is great for me, because it' let's me know that my guests have arrived. In my opinion, when my guests actually get settled in however, my dog is very calm and controlled. I don't think my dog has any problem with a problem with company whatsoever but I think it may have to do with the fact that my dog gets excited with meeting new people, so no worries from me.