Hi I've just setup blueiris on my lan and am really liking it. I now want to view it remotely and I understand I have to foward a port on my modem to do this, plus some other stuff. 
What I would like to know, once setup , will my camera's be streaming video 100% of the time to the web and chew up my data cap or will it only use data when I log in remotely to view.
Sorry if it's a noob question this is all new to me.
Thanks