Over the past several years, mobile clients such as smartphone and tablet apps have become a common method to access video on DVRs and video cameras. Most video recorders or video recording software is accompanied by an app which, along with some configuration on site, can be used to access live or recorded video.
Things get tricky when the recorder is behind a firewall, and remote to the mobile client. That is, if your smartphone is on 4G/LTE or you’re on a different wifi network than the recorder, you must configure the recorder and your firewall to enable remote access. Typically you’ll also need to figure out how to instruct your mobile client to contact the recorder with appropriate internet addresses, port numbers, etc.
