By default, the following ports needs to be forwarded for remote access. HTTP port: 80Used to connect via the web browser Server port: 8000Used to connect via iVMS-4200 software and iVMS-4500 Mobile App RTSP port: 10554Used for the video streaming HTTPS port: 443Used to connect via the web browser using SSL encryption   Note: If the RTSP (Real Time Streaming Protocol) port is defaulted to 554 (on older model/firmware) it is recommended to change this port to 10554 or 1024 when experiencing connection issues over 3G/4G connection.