Is it possible to view security cameras from a place of business?

Many of the newer CCTV DVRs have IP network capabilities. If where the DVR and cameras are located has a LAN and the DVR connnected to it and supports the cameras being viewed live, and the recorded video can be accessed for review and in some cases copied from the DVR to an external storage device. Many DVR systems also have ability, with an app, to be accessed with a smart cell phone. Of course all of this is through a secured connection requiring a login.